effects of task-induced involvement on incidental
TRANSCRIPT
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 1/96
!!!!!!
Effects of Task-Induced Involvement on Incidental
Vocabulary Learning in a Second Language!!
!
!
905258
Hui-Fang Tu
Dr. I-Ru Su
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 2/96
i
!
!
!(incidental vocabulary learning)
B. Laufer J. H. Hulstijn
(Involvement Load Hypothesis)
(time-on-task)
(Hulstijn &
Laufer, 2001)
!
1. !(involvement load)
!
2. (time-on-task)!
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 3/96
ii
1.
2.
!
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 4/96
iii
ABSTRACT
The enormity of the lexical pool has long presented a formidable challenge for
many language learners. As direct vocabulary instruction clearly fails to account for
the substantial vocabulary knowledge of intermediate and advanced learners, there
has been a broad acceptance of the view among researchers as well as practitioners
that a large proportion of L2 vocabulary could be acquired incidentally from written
contexts by learners. Nonetheless, it is not clear if, or to what extent, different L2
learning tasks have different impact on incidental vocabulary learning. This study
aimed to examine whether retention of vocabulary acquired incidentally is contingent
upon the amount of task-induced involvement load, a construct proposed by Laufer
and Hulstijn (2001) in the Involvement Load Hypothesis. Furthermore, the factor of
time-on-task, according to this hypothesis, is inherent in tasks, thus not subject to
manipulation. Yet the superiority of tasks with a higher involvement load reported in
previous research (Hulstijn & Laufer, 2001) may well have resulted from longer
exposure (longer time-on-task) rather than from deeper processing induced by this
type of tasks. Accordingly, the factor of time-on-task was scrutinized as well in this
study. To be brief, the present study aimed to examine the following two research
questions:
1. Are tasks with a higher involvement load more effective for vocabulary retention
than tasks with a lower involvement load?
2. Does the factor of time-on-task in its own right exert impact on vocabulary
retention?
Six classes of senior high school students in Taoyuan County participated in
two experiments (time-on-task not controlled and time-on-task controlled,
respectively) and were randomly assigned to perform one of the three learning tasks
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 5/96
iv
varying in involvement loads: reading comprehension, reading comprehension plus
filling in target words, and composition-writing with target words. Short- and long-
term retention of ten unfamiliar words was investigated on two (immediate and
delayed) posttests at an interval of one week. The results of the current study are
summarized as follows:
1. When the factor of time-on-task was not controlled, tasks with a higher
involvement load, as predicted by the Involvement Load Hypothesis, were more
effective for vocabulary retention than tasks with a lower involvement load.
2. When the factor of time-on-task was controlled, more involving tasks were in
general more effective for vocabulary retention, yet the difference in retention
scores among tasks with varying involvement loads was not consistently
significant. In addition, for an identical task, longer time-on-task mostly led to
better retention.
These results are discussed in light of the Involvement Load Hypothesis and
implications for further research and L2 pedagogy considered.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 6/96
v
ACKNOWLEDGEMENTS
Words are not enough to convey my profound gratitude to my advisor, Dr. I-
Ru Su, whose continual inspiration, enlightening instructions, and thoughtful
guidance render the completion of this thesis possible. My sincere gratitude also goes
to my two committee members, Dr. Hsien-Chin Liou and Dr. Hao-Jan Chen, who
spent much time reading my work and provided many valuable comments.
Special thanks go to all of the teachers who taught me during my two years of
study in Tsing-Hua, in particular, Dr. Hsu Samuel Wang, through whose course I
learned about the basics of statistics, and who kindly provided statistical consultations
for my completion of the thesis. Besides, I would like to thank Hsiao-Yun Hsiao for
her generosity to offer me some of her class time for my experiment.
Likewise, I am indebted to all my classmates, who made my stay at Tsing-Hua
wonderful and worthwhile. I would also like to express my thanks to my colleagues
in National Chungli Senior High School for their continuous concern for my graduate
study.
Finally, I would like to express my deepest gratefulness and true love to my
dear family, in particular, my beloved husband, whose unflagging support has
sustained me through the years of my graduate study, and to whom I sincerely
dedicate this thesis.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 7/96
vi
TABLE OF CONTENTS
ABSTRACT (Chinese)…………………………………………………………….. ….i
ABSTRACT (English)……………………………………………………………..…iii
ACKNOWLEDGEMENTS………………………………………………... …………v
TABLE OF CONTENTS…………………………………... ………………………...vi
LIST OF TABLES…………………………………………………. ……………….viii
LIST OF FIGURES………………………………………………... ………………...ix
CHAPTER ONE INTRODUCTION…………………………….. …………………1
1.1 The Involvement Load Hypothesis…………………………………………….. …3
1.2 The Goals of the Present Study………………………………………… …………3
1.3 Organization of the Thesis……………………………………... …………………4
CHAPTER TWO REVIEW OF THE LITERATURE…………………... …………5
2.1 Theoretical Concepts Associated with Incidental Learning…………… …………5
2.1.1 Implicit/Explicit Learning, Knowledge, and Instruction………………… …5
2.1.2 Incidental/Intentional Learning…………………………………………... ..14
2.1.3 Depth-of-Processing…………………………………………………….….19
2.2 Empirical Research on Incidental Vocabulary Acquisition……………. ………..23
2.3 The Involvement Load Hypothesis…………………………………….. ………..28
CHAPTER THREE METHODOLOGY……………………….....………………..36
3.1 The Goals of the Present Study………………… ………………………………..36
3.2 Method…………………………………………………………. ………………..37
3.2.1 Participants……………………………………………………………….. ..37
3.2.2 Instruments……………………………………………….. ……....………..37
3.2.2.1 The Target Words………………………………………... ………..37
3.2.2.2 The Reading Text………………………… ………………………..38
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 8/96
vii
3.2.2.3 The Posttests……………………………………....……...……… ..39
3.2.3 The Tasks………………………………………… ………………………..40
3.2.4 Procedures………………………………………………... ………………..43
3.2.5 Data Analysis…………………………….. ………………………………..44
3.3 The Predictions………………………………………… ………………………..45
CHAPTER FOUR RESULTS AND DISCUSSION…………………….. ………..47
4.1 Results and Discussion of Research Question 1……………………….. ………..47
4.1.1 Results……………………………………………………………. ………..47
4.1.2 Discussion………………………………………………………………... ..50
4.2 Results and Discussion of Research Question 2……………………………….. ..52
4.2.1 Results……………………………………………………………. ………..52
4.2.2 Discussion………………………………………………………………... ..56
CHAPTER FIVE CONCLUSION……………………………………………….. ..60
5.1 Summary of the Findings………………………………………………. ………..60
5.2 Implications……………………………………………………………..………..61
5.3 Limitations of the Study and Suggestions for Future Research………... ………..64
REFERENCES……………………………………………………………...………..67
APPENDIX A Reading text………………………...……….……………………..77
APPENDIX B Immediate posttest………………………......…………… ………..79
APPENDIX C Delayed posttest………………………...………...………………..80
APPENDIX D Work sheet for Task 1…………………………… ………………..81
APPENDIX E Work sheet for Task 2……………………………………………...83
APPENDIX F Work sheet for Task 3……………………………………………...85
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 9/96
viii
LIST OF TABLES
Table 1 The task-induced involvement loads for the three tasks in Hulstijn and Laufer
(2001)………………………………..……………………. ………………..32
Table 2 The task-induced involvement loads for the three tasks in the present
study……...………….……………………………………………. ………..42
Table 3 Number of participants, mean retention scores, and standard deviations of the
immediate and delayed posttests in Experiment I………...………………...48
Table 4 ANOVA on the retention scores of the immediate and delayed posttests in
Experiment I……………………………………….……....………………..48
Table 5 Number of participants, mean retention scores, and standard deviations of the
immediate and delayed posttests in Experiment II………….……. ………..53
Table 6 ANOVA on the retention scores of the immediate and delayed posttests in
Experiment II………………………...…………………………… ………..53
Table 7 Mean scores of the immediate and delayed posttests in Experiment I and
II ………………………………………………………………………….. ..58
Table 8 Comparisons of mean scores of the immediate and delayed posttests between
Experiment I and II…………………………………………………………59
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 10/96
ix
LIST OF FIGURES
Figure 1 Retention scores of the immediate and delayed posttests in Experiment
I…………………………………………………………………...………..50
Figure 2 Retention scores of the immediate and delayed posttests in Experiment
II…………………………………………………. ………………………..55
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 11/96
1
CHAPTER ONE
INTRODUCTION
Many learners of a second or foreign language feel concerned with the burden
of vocabulary learning and worry about how to tackle the formidable task of learning
many thousands of words. For learners at the beginning level, intentional and explicit
learning of new lexical items generally accounts for most of their vocabulary
knowledge, as their insufficient vocabulary largely inhibits them from acquiring new
words incidentally via extensive reading. Explicit attention of the beginners is
directed toward the various aspects of word features (e.g., form, meaning, and use),
which are to be imprinted on the memory of the learners with deliberate attempts, be
they rote learning or other vocabulary exercises.
This exclusive dependence on intentional learning, nonetheless, fails to
address the needs for intermediate and advanced learners, who in general process new
pieces of information in a second language not so much to acquire specific words as
to glean meanings from visual and verbal input. For instance, intermediate and
advanced learners may read extensively for pleasure or use a second language for
communication, yet they may well "pick up" certain words in the process of such
endeavors—a condition termed incidental vocabulary learning, as the acquisition of
the words is but a by-product of another main cognitive activity (Hulstijn, 2001).
Since the laborious nature of intentional learning precludes the possibility of its being
a major means of cultivating a large-sized lexicon, the incidental-learning mode
manifests as a viable alternative for vocabulary development.
Nevertheless, an investigation into the research on vocabulary acquisition
reveals an eminent precedence accorded to the intentional-learning mode. Empirical
studies and reviews probing the efficacy of intentional learning are in great abundance
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 12/96
2
(e.g., Dickinson, 1978; Konopak et al., 1987; McLaughlin, 1965), and research on
vocabulary learning strategies also presents a fruitful line of investigation (e.g., Coady,
1997a; Hulstijn, 1997; N. Schmidt, 2000). However, the primary emphasis on
intentional learning clearly runs counter to most human learning, which is cogently
argued to occur incidentally (e.g., Eysenck, 1982). Furthermore, a neutral stance is
also advanced, which contends that these two learning modes should be regarded as
complementary rather than dichotomous (N. Schmidt, 2000). Thus, it may be
justified to claim that incidental learning in its own right merits further investigation.
The appeal for a keen research interest in incidental learning is recently
responded by a major strand of research on vocabulary acquisition from context (e.g.,
Coady, 1997b; Konopak et al., 1987; Nation & Coady, 1988; Prince, 1996; Swanborn
& de Glopper, 2002), which accommodates rigorous theoretical as well as empirical
interest in the relationship between incidental vocabulary learning and extensive
reading. Drawing on the results of this line of enquiry, the investigation of incidental
vocabulary acquisition gains fresh insights from research on textual aids (Herman,
Anderson, Pearson & Nagy, 1987; Hulstijn, 1992; Watanabe, 1997), on dictionary use
(Cho & Krashen, 1994; Hulstijn, Hollander & Greidanus, 1996; Knight, 1994;
Luppescu & Day, 1993), and, akin to the nature of the present study, on tasks (Joe,
1995, 1998; Paribakht & Wesche, 1997; Wesche & Parabakht, 2000). In search of a
plausible explanation for the superior effect of one approach or task over another,
researchers sometimes claim that the benefits may be attributable to the greater depth
of processing (Craik & Lockhart, 1972) that one approach or task induces than the
other. Yet this concept of deep processing is seriously afflicted with a lack of an
operationalizable definition. Accordingly, research on task effectiveness would entail
the formulation of criteria that are amenable to manipulation and measurement,
thereby providing a solid basis for explaining task efficacy of vocabulary learning.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 13/96
3
1.1 The Involvement Load Hypothesis
Feeling the compelling need to translate such an important yet general concept
as depth-of-processing into a concrete task-specific construct, Laufer and Hulstijn
(2001) proposed the Involvement Load Hypothesis for L2 vocabulary learning,
whereby tasks may be unambiguously graded for the processing depths they induce
and thus their relative efficacy in terms of vocabulary acquisition.
According to the hypothesis, task-induced involvement consists of three basic
elements—need , search, and evaluation, each of which may be present or absent in
the processing of vocabulary items in a task with varying degrees of prominence. The
combination of these factors with their degrees of prominence comprises involvement
load, which explains and predicts the successful retention of heretofore unfamiliar
words by learners—the greater the involvement load, the better the retention. Worded
differently, tasks that induce a higher involvement load are more effective in terms of
vocabulary retention as compared with tasks with a lower involvement load.
1.2 The Goals of the Present Study
Seminal as this proposition, empirical research drawing on this construct has
been sparse, which underscores the importance for further investigation. The current
study, aiming to provide such an empirical testing, was composed of two experiments
based on the Involvement Load Hypothesis to examine whether task-induced
involvement, as defined by this hypothesis, is positively correlated with the retention
scores of the target lexical items.
A second goal underlying the present study is the fact that the factor of time-
on-task is accorded virtually little importance in this hypothesis, as the researchers
argue that this component is an inherent feature of tasks and therefore not amenable to
manipulation. Yet this contention plainly goes against a prevalent view espoused by
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 14/96
4
research on task effects—that the length of exposure to targets should be kept
identical to allow for equal comparison of task effects (see e.g., Paribakht & Wesche,
1997; Robinson, 1996, 1997; Swanborn & de Glopper, 2002; Watanabe, 1997).
Accordingly, three tasks are designed based on the hypothesis and crossed with the
component of time-on-task in the current study to further investigate the efficacy of
the Involvement Load Hypothesis (Laufer & Hulstijn, 2001) and also to delineate the
relationship between processing time and depth.
The significance of the present study resides in its attempt to make an
empirical contribution to the long-contested issue of task efficacy with respect to
incidental vocabulary learning. In a pedagogical sense, it is hoped that the results
from the investigation may shed some light on the effectiveness of the Involvement
Load Hypothesis (Laufer & Hulstijn, 2001) in predicting task efficacy, thereby
assisting in the development of tasks that best foster vocabulary learning in an
incidental setting.
1.3 Organization of the Thesis
The present thesis consists of five chapters. Chapter One elucidates the need
and motivations for the current study—an empirical testing of the Involvement Load
Hypothesis (Laufer & Hulstijn, 2001). Chapter Two reviews major theoretical
concepts as well as empirical studies relevant to incidental vocabulary learning.
Chapter Three delineates the research questions, the research method, including the
selection of participants, instruments, tasks, procedures, data analysis, and describes
the predictions of the current investigation. Chapter Four presents the results and
discusses the findings from these two experiments. Chapter Five concludes the thesis
with a summary of the major findings, theoretical as well as pedagogical implications,
the limitations of the current study and suggestions for further research.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 15/96
5
CHAPTER TWO
REVIEW OF THE LITERATURE
This chapter comprises three major sections. The first section examines the
theoretical concepts commonly associated with incidental learning in cognitive
psychology as well as in second language research. To begin with, incidental learning
is discussed in terms of the implicit – explicit distinction, which manifests itself
mainly in three issues: learning, knowledge, and instruction, as the investigation of
these issues yields substantial insight into the nature of incidental learning. The
second subsection reviews incidental learning with regard to the distinction between
incidental and intentional learning, which is in turn followed by a detailed discussion
on the depth-of-processing hypothesis, a critical theoretical assumption that a myriad
of empirical research on incidental vocabulary learning draws upon. The second
major section of the chapter reviews relevant empirical research on incidental
vocabulary learning. Finally, the third main section outlines the construct of task-
induced involvement, the basic concept underlying the Involvement Load Hypothesis
(Laufer & Hulstijn, 2001), which motivates the present study.
2.1 Theoretical Concepts Associated with Incidental Learning
2.1.1 Implicit/Explicit Learning, Knowledge, and Instruction
A central concept in cognitive psychology as well as in second language
acquisition research that has generated a host of fruitful work is the implicit – explicit
distinction, which takes several different forms and has been applied to different
referents. For instance, researchers are intrigued by the processes of implicit and
explicit learning, by the nature of implicit and explicit knowledge, and by the effect of
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 16/96
6
implicit and explicit teaching strategies on language acquisition. Albeit the extensive
application, the inconsistent and unqualified use of the terms implicit and explicit has
aroused certain confusion in recent years and calls for delineation (Berry, 1994).
In the realms of cognitive psychology and second language acquisition alike,
the presence of “awareness” serves as a primary defining feature in terms of this
implicit – explicit distinction. R. Schmidt (1990, 2001) elucidates in great length the
role of awareness in implicit and explicit learning, the definition of the former being
“learning without awareness” whereas the latter, “learning with awareness”. The
sheer weight that R. Schmidt (1990, 1993, 1994, 2001) has allocated to awareness (or
attention/consciousness) is not incidental: Winter and Reber (1994) believe that the
spirit of implicit learning is mirrored in the notion that 'people can under some
circumstances "absorb" knowledge or information from the environment without
awareness of the learning process' (p. 117). Like viewpoints are presented with
reference to attention by N. Schmidt (2000), who considers explicit learning the
allocation of attention directly on the information to be learned.
N. Ellis (1994a) also brings to the fore of the discussion on the implicit –
explicit dimension the importance of conscious operations. He specifies implicit
learning as the "acquisition of knowledge about the underlying structure of a complex
stimulus environment by a process which takes place naturally, simply and without
conscious operations" (p. 1); explicit learning, on the contrary, refers to "a more
conscious operation where the individual makes and tests hypotheses in a search for
structure" (p. 1). Put simply, knowledge attainment may be achieved either by
abstraction of the structural nature of the stimulus via exposure to instances or by
searching for information then forming and testing hypotheses or via assimilation of
given rules. This concept of hypothesis building and testing is taken up by Berry
(1994) in her definition of implicit and explicit learning and yet is viewed in
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 17/96
7
somewhat different light. She defines these two modes of learning not in terms of
consciousness but of the recourse to deliberate strategies: Learning is implicit when
people learn to employ the structure of an environment without using such analytic
strategies as generating and testing hypotheses; learning may be explicit when such
deliberate strategies are used. Given that Berry provides little elaboration on the
relationship between "deliberate strategies" and "consciousness", it remains to be seen
whether these two terms are co-referent from her standpoint, but it has almost become
conventional wisdom that consciousness has some role to play in the discussion of the
implicit – explicit dimension.
Based on the foregoing review, the current study formulates the definition of
implicit learning and explicit learning as follows:
Implicit learning:
a. No attention on the part of learners is allocated directly on the information to be
learned.
b. No conscious operations on the part of learners are involved in the learning
process.
i) Learners are unaware of the process of learning.
ii) Learners are unaware of the information to be learned.
iii) Learners are unaware of the resultant knowledge from the learning process.
c. Learners do not exploit analytic strategies such as hypothesis formation to learn
the knowledge.
Explicit learning:
a. Learners focus their attention directly on the information to be learned.
b. Conscious operations on the part of learners are involved in the learning process.
i) Learners are aware of the process of learning.
ii) Learners are aware of the information to be learned.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 18/96
8
iii) Learners are aware of the resultant knowledge from the learning process.
c. Learners might exploit analytic strategies such as hypothesis formation to learn the
knowledge.
Following the heels of a general definition of implicit and explicit learning
comes the issue of the relative effectiveness of these two modes of learning, which
sparks another furious debate in research on second language acquisition. In line with
the consciousness issue advanced in cognitive psychology, explicit learning is
generally viewed as facilitative, in that it promises the greatest chance for the
acquisition of information by virtue of direct attention to it (N. Schmidt, 2000).
Another cogent argument for the importance of explicit learning is that it serves as a
prerequisite for learning under other conditions. For instance, it is a widespread belief
in research on vocabulary acquisition that some explicit learning is probably
necessary to reach a vocabulary size threshold such that incidental learning from
reading may be rendered possible, and that this learning mode may be particularly
effective in developing a sufficient knowledge of crucial technical vocabulary as a
basis for further learning (N. Schmidt, 2000). An additional asset of this learning
mode is that explicit focus on stimulus promotes correct understanding of the
information, while implicit exposure might lead only to knowledge of surface features
rather than authentic rule knowledge (Johnstone & Shanks, 2001).
A careful investigation into language acquisition, nonetheless, yields a
different picture much more complicated than a general preference for explicit
learning over the implicit mode. Given that learning the various aspects of a language
explicitly is too laborious an endeavor for even the most diligent learner to undertake,
it is generally assumed that language acquisition, be it L1 or L2, occurs mostly
implicitly (in this present study, the terms “learning” and “acquisition” will be
exploited interchangeably). Chomsky (1986) is probably justified in claiming that
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 19/96
9
explicit learning could account for only a small part of language acquisition, in that no
native speaker has a level of explicit understanding that could approximate the
complex intuitive knowledge people have of their language. By the same token,
Krashen (1982, 1985, 1989, 2002) accords little importance to explicit learning in his
Monitor Hypothesis, which relegates the role of learned competence to that of a
Monitor for one’s utterances. As Stern (1992) contends, this favor for implicit
learning is indisputable, since much of the learning is deemed to occur below the level
of consciousness while the learner is busy using the language in the course of daily
life. Accordingly, he proposes that it is “perfectly reasonable to encourage
unconscious language acquisition” (p. 340).
Nevertheless, some researchers contend that implicit and explicit learning
should be regarded not as an absolute dichotomy (MacWhinney, 1997), but as a
continuum in which these two approaches complement each other (Sharwood Smith,
1981; Faerch et al., 1984, cited in Stern, 1992). It is advantageous for learners to
have access to both learning modes and to shift from a more cognitive to more
intuitive command (from explicit to implicit), or in the opposite direction (from
implicit to explicit). In a similar vein, R. Schmidt (1993) argues that interaction
between these two modes of learning brings about positive effect on language
acquisition, and that each has its merits. Worded differently, these two modes are
best regarded as complementary, not distinct and isolated, and the artful combination
of these two modes makes an ideal basis for teaching packages (Berry, 1994).
The implicit – explicit dimension also finds expression in terms of the
resultant knowledge from the learning processes. According to Chomsky (1986), the
key determinant of these two types of knowledge refers to whether facts about the
language can be confirmed through introspection, whereas in second language
research, this distinction is based primarily on “whether a learner is able to articulate a
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 20/96
10
rule of the language” (R. Schmidt, 1990, p. 133), or at the operational level, “whether
the learner is aware of what s/he knows and can verbalize it” (R. Ellis, 1994, p. 167).
Bialystok (1979) reported that both implicit and explicit knowledge contribute to
language learning and that both should be developed.
The acknowledgement of the importance of these two types of knowledge may
have gone unchallenged, yet the relationship between them is far from straightforward.
For example, in the discussion of the acquisition of grammatical knowledge, three
positions are usually advocated (N. Ellis, 1994a; R. Ellis, 1993; Laufer & Hulstijn,
2001): the No Interface position, Strong Interface position, and Weak Interface
position. According to the various contentions advanced with respect to the
relationship between explicit and implicit knowledge, explicit, metalinguistic
knowledge has no effect on the acquisition of implicit knowledge (No Interface),
converts into implicit knowledge (Strong Interface), or may indirectly impact on the
acquisition of implicit knowledge by focusing learners’ attention on features in the
input crucial for the grammatical phenomenon to be acquired (Weak Interface). A
fervent supporter for the "No Interface" position is Krashen (1982, 1985, 1989, 2002),
who contends that the explicit knowledge resulting from conscious learning can by no
means be converted into the implicit knowledge acquired subconsciously. R. Schmidt
(1994, 2001) developed the "Weak Interface" position into the Noticing Hypothesis,
which holds that metalinguistic knowledge may not be essential for L2 grammar
acquisition, but learners must “notice” the critical features in utterances. This
advocation of the importance of “noticing” has lent strong support to the exploitation
of explicit instruction in language acquisition, which will be elaborated in the
following discussion.
In the realm of SLA, a long-standing practice in experimental paradigms is to
investigate the implicit – explicit contrast with reference to teaching rather than
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 21/96
11
learning—whether explicit grammar rules1, vocabulary, and strategies can be taught
to learners. For most researchers as well as practitioners, the importance of implicit
learning is unrivaled, yet explicit instruction does have some role to play, largely on
the grounds that it facilitates learning either by focusing learners’ attention directly on
the features in point or by making these features more salient. For instance, R.
Schmidt (1990, 1993, 2001) suggests that explicit instruction assists in focusing
attention on forms and meanings in the input, thus facilitating learning. Drawing
upon his review of research which attests to the efficacy of explicit instruction,
MacWhinney (1997) comments from a psycholinguistic perspective that a no-lose
proposition would be to provide learners with explicit instruction along with standard
implicit exposure. In a similar vein, N. Ellis (2002), while advocating that language
processing is based on frequency and probabilistic knowledge, thus mostly implicit,
admits that language acquisition can be speeded by explicit instruction. More
specifically, Robinson (1996, 1997) reported a beneficial effect for learners receiving
explicit instructions in the learning of simple rules as opposed to implicit, incidental,
and rule-search computerized training groups. Roediger (1990) draws a similar
conclusion that thorough instruction of abstract principles and rules combined with
numerous concrete examples can lead to substantial rates of spontaneous transfer of
these rules to problems in other contexts.
In comparison with the relatively much emphasis allocated to explicit
grammar instruction, the efficacy of explicit instruction of vocabulary is also well
attested to, and may have even closer affinity with the purpose of the present study.
For example, Konopak et al. (1987) found a superiority for instructed learners as
opposed to incidental and control groups in terms of vocabulary gains from context.
1
The discussion of focus on form and focus on forms instruction is well beyond the scope of thepresent study. For detailed discussions on relevant topics, see e.g., Doughty and Williams (1998);
Long (1988).
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 22/96
12
Nation and Newton (1997) outline a direct approach to vocabulary learning which
involves the study of vocabulary by means of explicit vocabulary exercises. For the
advocates of reading as a primary means of language acquisition, the need for explicit
vocabulary instruction is particularly compelling: N. Schmidt (2000) contends that a
certain vocabulary size resulting from explicit instruction is essential such that
incidental learning from reading may occur; Huckin and Coady (1999) suggest that
learners may benefit not only from explicit instruction on vocabulary but also from
instruction on inferencing strategies. In a nutshell, as R. Schmidt (1994) discreetly
points out, instruction facilitates both explicit and implicit learning, but probably in
different ways, and that the mechanisms involved merit further investigation.
As opposed to the extensive discussion of the effect of explicit instruction on
learning, the exploitation of implicit instruction strategies is relatively understated in
the literature of second language pedagogy. According to Stern (1992), techniques in
this category "encourage the learner to approach the new language globally and
intuitively rather than through a process of conscious reflection and problem-solving"
(p. 339). Typically, the implicit strategy manifests itself in three ways: (1) through
implicit practice (e.g., techniques from the audiolingual method that minimize
thinking about the language); (2) through experiential approaches which focus the
learner's attention on the content, use, rather than the rules or system of the language;
(3) through creating a receptive state of mind in the learner by means of heeding the
affective state of the language class. Winitz (1996) reported a beneficial effect for
implicit grammar instruction over explicit grammar instruction; nevertheless, as is the
case with implicit and explicit learning, Stern (1992) proposes that the two strategies
should ideally be combined for maximum benefits in language learning and teaching,
with the respective weight allocated to each strategy being based on the language
topic, the course objectives, the characteristics of the students, and the needs of the
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 23/96
13
teaching situation.
With the foregoing discussions on implicit/explicit learning, knowledge, and
instruction respectively, some investigation into the relationship between these
concepts seems warranted as well as relevant to the present study. To begin with,
different aspects of knowledge may be susceptible to different modes of learning. For
example, N. Ellis (1994b) claims that the perceptual aspects of new lexical items (e.g.,
their phonetic and phonological features) are learned implicitly as a consequence of
frequent exposure, and that the motor aspects (e.g., the articulation of word forms)
develop implicitly via practice. Nonetheless, he proposes that the meaning of words
is learned explicitly by means of conscious processing at the semantic and conceptual
levels and of attention to the form-meaning connections on the part of learners. The
relationship between modes of learning and instruction is another issue that deserves
some attention. R. Schmidt (1994) cautions against the faulty assumptions that
implicit teaching strategies trigger implicit learning process, that rule-search
instructions result in explicit knowledge, that uninstructed learners learn implicitly, or
that learners receiving form-focused instructions do not learn implicitly. The effect of
instruction in SLA is well worth investigating, yet any claims concerning implicit and
explicit learning (essentially learner-internal processes) cannot be well sustained
without adequate assessment of learner awareness.
Given that the concept of "intention" has some role to play in the discussion of
implicit and explicit learning (e.g., Williams, 1999), and that much research work on
implicit learning is in essence conducted under incidental conditions—situations
where subjects are not given outright instructions to learn the targets but asked to
perform tasks that focus their attention on things other than the real targets—it seems
timely for a look into language acquisition in view of the incidental/intentional
situations with a focus on the incidental vocabulary acquisition in a second language.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 24/96
14
2.1.2 Incidental/Intentional Learning
Interest in incidental and intentional learning has presented a main line of
investigation in the psychological literature since the beginning of the twentieth
century and has served experimental psychology a long time (for classical readings,
see Eysenck, 1982; McLaughlin, 1965; Postman, 1964). Notwithstanding the
numerous studies conducted on L1 and L2 acquisition, be they about vocabulary,
grammar, or other aspects of language, there seems to be a disturbing lack of an
unequivocal distinction between these two terms, or even a clear theoretical definition
of either. In Singleton’s (1999) comprehensive review of a wide variety of studies
that claimed to have investigated “incidental” learning of L2 vocabulary, he notes that
a consensus will certainly have to be reached about what is to be included and what is
to be excluded under the term “incidental” if the debate about incidental vocabulary
learning is to proceed with any degree of coherence in the future.
Despite the lack of an absolute theoretical distinction between the terms
“incidental” and “intentional”, matters are relatively straightforward at the operational
level, as “intentional and incidental learning can be distinguished in terms of the use
of prelearning instructions that either do, or do not, forewarn subjects about the
existence of a subsequent retention test” (Eysenck, 1982, p. 198). Emanating from
this distinction are two basic experimental methods (Eysenck, 1982; Hulstijn, 2001).
In the Type I paradigm, which is characteristic of the earlier studies, the subjects in
the incidental-learning condition perform an orienting task on the stimulus materials
without being given instructions to learn but are afterwards tested for retention.
Conversely, the subjects in the intentional-learning condition are informed in advance
of an upcoming retention test. In the Type II design, which was deployed in most
later studies, all subjects are instructed to learn some of the stimuli that are presented
to them, with some other additional stimuli presented along not being the target of the
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 25/96
15
orienting task but being the basis for assessment of incidental learning. One of the
major merits of this second type of design resides in the cost-effective nature that
subjects act as their own controls—that is, they serve both under the incidental- and
intentional-learning conditions. For instance, in a hypothetical study on the effect of
glossary types on incidental vocabulary acquisition, learners may serve under an
intentional condition as they are required to read a text for a later comprehension test,
but meanwhile they are engaged in an incidental condition as they are exposed to
unfamiliar words (with different types of glossary), which are to be subsequently
tested for retention.
In the realm of pedagogy, however, the picture is slightly different.
Controversial as the two types of experimental design in the research on psychology,
studies on pedagogy in general adopt similar definitions with respect to the
incidental – intentional distinction. With Craik and Lockhart’s (1972) proposal of the
depth-of-processing framework (see the next section on depth-of-processing for a
detailed discussion), the behaviorist tradition in psychology gave way to the cognitive
paradigm, and accordingly modified the meaning of the terms “incidental” and
“intentional”. In the applied domains of current L1 and L2 pedagogy2, incidental
vocabulary learning is “the learning of vocabulary as the by-product of any activity
not explicitly geared to vocabulary learning, with intentional vocabulary learning
referring to any activity aiming at committing lexical information to memory”
(Hulstijn, 2001, p. 271). Laufer and Hulstijn (2001) offer a similar definition, which
states that incidental vocabulary learning means learning without the intention to learn,
or the learning of one thing (e.g., vocabulary) when the learner’s main concern is with
something else (e.g., communication). In contrast, intentional vocabulary learning
2
In line with much of the research on language acquisition as well as the purpose of this present study,the discussion of this subsection, together with the later sections, will focus mainly on vocabulary
acquisition.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 26/96
16
refers to the learning of vocabulary by deliberately committing lexical information to
memory. These definitions, which share a fundamental emphasis on the presence or
absence of intention and focal attention, have become prevalent in much research on
second and foreign language pedagogy.
Albeit the almost unanimous definitions of the two learning modes, the
controversy of the role intention plays in learning has spawned much research work.
For instance, McLaughlin (1965), though questioning the legitimacy of maintaining a
conceptual distinction between intentional and incidental learning, concludes that
“learning is more difficult under disadvantageous (no-instructions) conditions” (p.
373), when compared with learning under advantageous conditions (with the
instructions to learn). Similarly, in Dickinson’s (1978) study of the acquisition of
four linear arm-positioning movements by incidental and intentional learners, long-
term storage was found to be dramatically affected by intention to learn and
foreknowledge of a recall test, whereas short-term memory performance was
marginally different for these two groups of learners. Konopak et al. (1987) reported
a tendency for intentional learning group to outperform both the incidental and control
groups when focusing on word learning from context.
The advantages that the preceding studies have accorded intentional learning
are not without their general critics. The acknowledgment of the efficacy of learning
intentionally is often accompanied by discreet cautions against the exclusive
dependence on its exploitation, as this mode of learning virtually contributes to a
rather limited proportion of vocabulary acquisition (Hulstijn, 1992; Krashen, 1989;
Laufer, 2001). Furthermore, empirical evidence for the effectiveness of incidental
learning over the intentional mode is simply substantial. Shelton and Newhouse
(1981), for example, observe that learners who were exposed to the stimulus material
in an incidental-learning situation significantly performed better in a subsequent recall
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 27/96
17
test than subjects who were simply instructed to learn the same material. By the same
token, Gass (1982, cited in Gass, 1999) found a superior effect for incidental learners
who performed well not only on the relative clauses they were exposed to but also on
some linguistically related structures that they had no preknowledge of. A somewhat
neutral stance, however, is advocated by some researchers who allocate more
importance to factors other than the incidental – intentional distinction in terms of
language acquisition. Eysenck (1982) proposes that “memory performance is
determined far more by the nature of the processing activities engaged in by the
learner than it is by the intention to learn per se” (p. 203). This concept is endorsed
by R. Schmidt (1993), who argues that what really matters in learning is how tasks
force learners to process the material, rather than the intention to learn on the part of
the learner. R. Schmidt (2001), while acknowledging the importance of task demands,
further claims that intentionality is not so much a general requirement in learning as
attention is.
While the importance of intentionality in language acquisition is still an open
question, the incidental-learning mode is often posited, and widely subscribed to, as
the primary means of vocabulary acquisition as opposed to intentional learning
(Fukkink, Blok & de Glopper, 2001; Hulstijn, 1992; Krashen, 1989; Laufer, 2001;
Nagy, Herman & Anderson, 1985; Nation, 1990, 2001; N. Schmidt, 2000).
Nonetheless, some researchers as well as educators become increasingly concerned
with the limitations of incidental learning at the practical level. According to Huckin
and Coady (1999), incidental learning is susceptible to certain serious limitations. For
instance, in most cases, incidental learning demands a tactical use of inferencing
strategies as well as substantial prior vocabulary knowledge on the part of the learner
in order to render the learning effective. In addition, the meaning of lexical items
inferred from context may not be precise for tasks that call for accurate interpretation,
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 28/96
18
and it is still subject to criticism as the meaning obtained in this way may not translate
into acquisition.
With the foregoing concerns and issues in mind, nevertheless, the present
study took the incidental-learning paradigm as the framework for investigation, in that
this mode of learning is still deemed as a more appropriate condition than intentional
learning for empirical research on memory performance (Craik & Lockhart, 1972;
Laufer & Hulstijn, 2001). The preference for incidental over intentional learning in
terms of empirical paradigms is cogently stated in Hulstijn (1992), who contends that
the intentional-learning condition will prompt students to invoke all kinds of rehearsal
and memorization techniques, thus interfering with the effect of the initial processing
of word meanings. Besides, as this current study aimed to make an empirical
contribution to the construct of the Involvement Load Hypothesis proposed by Laufer
and Hulstijn (2001, see the review section on the Involvement Load Hypothesis for a
detailed discussion), the definition of incidental learning draws on the distinction
between incidental and intentional learning formulated by Laufer and Hulstijn (2001).
Put differently, in this present study, incidental vocabulary learning refers to “the
learning of vocabulary as a by-product of any activity not explicitly geared to lexical
learning” (Laufer & Hulstijn, 2001, p. 554). At the operational level, the two
prerequisites to this study are: (1) the primary concern of the subjects is with
something other than learning the target vocabulary, and (2) the subjects’ attention is
directed to the completion of the orienting tasks rather than to the target lexical items.
These two requirements could be achieved by the instructors’ demand on the subjects
to perform the respective assigned orienting tasks without informing them of
subsequent retention tests on the target vocabulary they were exposed to in their
attempts to accomplish the tasks.
Though it may be too assertive to eliminate the possibility of the deliberate
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 29/96
19
memorization of the target lexical items on the part of the subjects, there are sufficient
grounds to minimize this possibility in the present study. To begin with, as none of
the tasks was presented as a vocabulary-learning task, it is hoped that no undue
attention on the part of the participants would be directed toward the targets. Second,
the time constraints of each task would pose further challenge on top of the task
demand for the participants if they try to commit the words to memory, which may
tax their cognitive capacity too heavily. A final argument for reducing the possibility
of intentional vocabulary learning in this study is that it is highly unlikely that the
participants would make vocabulary learning their primary objective when they are
unaware of subsequent tests on the target lexical items. Only highly motivated
students may attempt to memorize words that are not to be tested on, which was
obviously not a prevalent phenomenon in this study. In view of the foregoing, it may
be safe to argue that the chances of the deliberate memorization of the targets by the
participants are virtually negligible.
2.1.3 Depth-of-Processing
A crucial concept underlying most of the investigation within the incidental-
learning paradigm is the depth-of-processing framework proposed by Craik and
Lockhart (1972), which states that “the memory trace can be understood as a by-
product of perceptual analysis and that trace persistence is a positive function of the
depth to which the stimulus has been analyzed” (p. 671). In terms of the relationship
between trace persistence and processing depths, they suggest that deeper levels of
processing contribute to more elaborate, longer lasting, and stronger traces.
According to this hypothesis, retention is determined not so much by the length of
time a piece of information is held in primary memory as by the depth to which the
information is initially processed. To render this concept of a hierarchy of processing
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 30/96
20
stages more complete, Craik and Lockhart further postulated several levels of
processing depths. For instance, processing the sensory features of a new lexical item
(e.g., orthography) occurs at a shallow level, whereas processing the semantic
attributes (e.g., meaning) takes place at a rather deep level. In an empirical sense, a
task that requires subjects to work out the meaning of words leads to better word
retention than one that induces them to simply check whether a certain letter occurs in
these words.
The launch of this concept of levels of processing spurred rigorous theoretical
as well as empirical interest in various strands of memory research, as it allocates
more emphasis on the “process” of cognitive activities than on the structure of
memory system (e.g., Baddeley, 1978, 1998; Craik & Tulving, 1975; Eysenck, 1993;
Glover, Rankin, Langner, Todero & Dinnel, 1985; Nelson, 1977). Nevertheless, the
original framework proposed by Craik and Lockhart (1972) is far from clear-cut. For
example, this framework provides commonsensical statements such as “deeper
processing leads to better memory performance,” but says relatively little about the
actual processing mechanism. As an amendment to this preliminary proposal, Craik
and Tulving (1975) further specified the “depth” of processing as “greater degrees of
semantic involvement” (p. 268). Apart from the degree of semanticity in processing,
they also highlighted the importance of elaboration, namely the richness with which
the information is encoded, as a factor that exerts a great influence on retention. This
notion receives added impetus in much of the subsequent research that attests to the
critical role that elaborateness of processing plays in facilitating retention (e.g.,
Chaffin & Herrmann, 1983; Diekhoff, Brown & Dansereau, 1982; Eysenck, 1993;
Eysenck & Eysenck, 1979).
Albeit the profound impact this hypothesis exerts on memory research, doubts
about the depth-of-processing view keep emerging (Baddeley, 1978, 1998; Eysenck,
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 31/96
21
1982, 1993; Nelson, 1977; Nelson, Walling & McEvoy, 1979). One of the major
criticisms is the lack of an independent index of the processing depth. If this
construct of levels of processing is to be empirically testable, a necessary prerequisite
is a sensible measurement whereby different levels of processing can be
unambiguously defined. Craik and Lockhart (1972) suggest that processing time may
serve as a predictor of processing depth, and hence of memory performance, since
deeper processing generally requires longer time to accomplish. Nevertheless, this
proposal was soon rejected, as the relationship between processing time and depth
may not always be positively correlated (Craik & Tulving, 1975; Eysenck, 1982;
Eysenck & Eysenck, 1979).
Another attack that the levels-of-processing theory fails to counter is the
circularity inherent in its core concept that deeper analysis leads to a more persistent
trace (e.g., Eysenck, 1993; Nelson, 1977). According to this framework, the ordering
of the various kinds of processing is achieved in terms of their effect on memory. For
instance, processing semantic attributes is posited to be more effective than
processing phonological features in terms of word retention, and therefore semantic
processing is deeper than phonological processing, and yet it is also contended that
semantic processing is more effective than phonological processing since the former
occurs at a deeper level than the latter does. In an empirical sense, no verification of
such a statement can possibly occur unless a separate stipulation is proposed for both
the ordering of processing depth and for the ordering of memory performance.
Unresolved as these preceding issues may seem, this depth-of-processing view
still enjoys unprecedented status in memory research, albeit the major obstacle of
providing operationalizable, unambiguous definitions is equally formidable for this
hypothesis and for any subsequent proposals to replace the processing depth with any
notion, be it encoding specificity, distinctiveness of encoding, degree of elaboration,
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 32/96
22
degree of richness (e.g., Baddeley, 1998; Eysenck, 1982). Yet, it seems to be a
widely endorsed viewpoint among cognitive psychologists that elaborate processing
of information does facilitate subsequent memory performance. If rich (qualitative)
and numerous (quantitative) associations with the existing framework of knowledge
can be established, the new information will be retained (Hulstijn & Laufer, 2001).
When applied to the acquisition of the lexicon, the more learners attend to the
linguistic features of a new lexical item, such as its orthography, pronunciation,
grammatical category, meaning, relationship with other words, the better the chances
are that learners may acquire this item.
Nevertheless, nothing can be more fallacious than the attempt to establish a
direct causal link between intentional learning and more elaborative processing, or
between incidental learning and less elaborative processing. As is elaborated in the
previous discussion on incidental and intentional learning, the critical determinant of
intentionality resides in the use of prelearning instructions that either forewarn
subjects of an upcoming test or not (at the psychological level) or the acquisition of
certain knowledge as a main purpose or as a by-product of other cognitive activities
(in a pedagogic sense). Accordingly, the relationship between incidental/intentional
learning and elaborateness in processing may be intertwined. For instance, when a
student is preparing for an oncoming vocabulary test by deliberately committing the
words to memory, the intention on the part of this student is obvious: The purpose is
the mastery of the target words, and this induces intentional learning of these lexical
items. However, if this student attempts to learn these words by allocating attention
simply to the superficial features of these words (e.g., orthography, phonological
characteristics), it is rather unlikely, according to the depth-of-processing hypothesis,
that deep (or elaborate) processing of these words will ensue. On the other hand,
incidental learning may induce elaborate processing provided that substantial
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 33/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 34/96
24
of the effectiveness of reading stimulated rigorous interest in examining the
relationship between reading and incidental vocabulary learning from context (Coady,
1997b; Fukkink et al., 2001; Konopak et al., 1987; Nagy et al., 1985; Nation & Coady,
1988; Prince, 1996; Swanborn & de Glopper, 2002; van Daalen-Kapteijns et al.,
2001). A unanimous conclusion drawn from these studies is that incidental learning
from context accounts for a substantial proportion of vocabulary acquisition on the
part of the subjects. And yet, it is also suggested that the probability of learning an
unknown word from a single exposure in context is disappointingly low, merely
between .10 to .15 (Nagy et al., 1985) or even less, for about .05 (Herman et al., 1987).
To foster effective incidental learning, researchers have called for attention to other
provisos. For example, Prince (1996) compared the relative advantages and
disadvantages of both context learning (incidental vocabulary learning from context)
and translation learning (intentional learning of words accompanied by their L1
equivalents) and found a superiority of translation learning in terms of quantity, but an
inability of weaker learners to transfer their knowledge into L2 contexts (to supply the
words in appropriate sentences). Prince thus suggests that alternative learning
strategies combining the advantages of the two techniques may merit further
investigation.
Fukkink, Blok and de Glopper (2001), on the other hand, investigated the
nature of vocabulary growth by having young learners (grade 2, 4, and 6) read
assigned texts and then complete multicomponential measure designed to tap learners'
partial as well as full knowledge of the target items. Results suggest that the
incremental nature of vocabulary growth involves adding correct attributes (learning
correct attributes not yet included), deleting false attributes (obliterating false
attributes incorrectly included in the hypothesized word definition), and
decontextualizing students' word definitions (inferring word meanings from context).
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 35/96
25
The findings also showed that grade and concreteness of concepts may be important
factors that impinge on young learners' ability to derive word meaning from context.
Swanborn and de Glopper (2002) pursued yet another intriguing matter: the
relationship between reading ability, reading purpose, and incidental vocabulary
learning from context. Two hundred and twenty three sixth-grade students of a wide
range of reading abilities were assigned to read texts for fun, to learn about the topic
of the text, and to read for text comprehension. Results from a definition task suggest
that participants who read for topical knowledge learned more words than those who
read for text comprehension, who in turn outperformed those who read for fun, and
that low-ability readers were found to hardly learn any words incidentally. The
researchers thus conclude that further aids other than simply extensive reading should
be provided for low-ability readers for significant gains in vocabulary size, and that
the purposes for reading as well as ways to serve the purposes should be made lucid to
learners.
As opposed to the foregoing studies which allocated emphasis mainly to
learner factors (e.g., learners' vocabulary growth processes, reading ability), a relevant
line of research on the effectiveness of reading on incidental vocabulary acquisition
focuses more on the textual aids in the reading material (Herman et al., 1987; Hulstijn,
1992; Watanabe, 1997). Hulstijn (1992) found that when learners read an L2 text for
comprehension of the content, they were more likely to retain the words when they
had inferred their meaning than when the meaning was given to them. Nevertheless,
in view of the many cases in which learners drew wrong inferences when no cue had
been given, the researcher contends that discussion in foreign language pedagogy
should focus on the type of cues to be given to students rather than on whether it is
better to give cues or have learners infer meaning by themselves without a cue. An
effective alternative to traditional L1 or L2 equivalents, according to the researcher, is
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 36/96
26
the multiple-choice procedure in which learners have to choose between four possible
meanings the most appropriate one for the context. The major strength of this
procedure, the researcher argues, is the active involvement of learners in the process
of inferencing while the risk of wild guessing without cues may be effectively
minimized.
Watanabe's (1997) study reveals a somewhat different picture from the results
reported by Hulstijn (1992). He compared the effects of different cue types
(appositives, single and multiple-choice marginal glosses) and a task (translation) on
incidental vocabulary learning. He reported not only a superior effect of both single
and multiple-choice marginal gloss conditions over no cue and appositive conditions,
but also a lack of difference between single and multiple-choice conditions, which
clearly runs counter to the findings by Hulstijn (1992). Watanabe attributes this
difference to the possibility that the subjects in the multiple-choice condition in this
study might have chosen the wrong alternatives, as was evident in their performance
on the translation task during the treatment, or that they might not actually retain what
they had learned during the treatment for later recall more than in the single-gloss
condition.
In addition to such textual aids as the provision of glosses, the use of
dictionary also manifests itself as an intriguing issue for incidental vocabulary
learning (Cho & Krashen, 1994; Hulstijn et al., 1996; Knight, 1994; Luppescu & Day,
1993). The general finding these studies yielded is that access to dictionaries by
students leads to better retention of the target words than when neither such access nor
glosses is given. The efficacy of dictionary use is not without expense, however. For
instance, Luppescu and Day (1993) caution the obvious decrease in reading speed
when learners refer to their dictionaries. They suggest that the benefits of dictionary
use should be carefully weighed against the prolonged reading process.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 37/96
27
Apart from the preceding studies, some researchers are intrigued by the effects
of tasks on incidental vocabulary learning (Elley, 1989; Hulstijn & Trompetter, 1998;
Joe, 1995, 1998; Laufer, 2001; Paribakht & Wesche, 1997; Wesche & Parabakht,
2000). As is reviewed in the previous discussion on incidental/intentional learning,
the intention to learn per se does not matter so much as how the task forces the
material to be processed (R. Schmidt, 1993). Joe (1995, 1998) found that text-based
tasks that entail the active production of the target words (i.e., tasks that induce
generative processing) significantly enhances vocabulary learning, with greater levels
of generative processing leading to greater vocabulary gains for unknown words. On
the other hand, contextualized reading-related activities (selection, recognition,
manipulation, interpretation, production) coupled with a reading text are also found to
be more effective than exposure to multiple reading texts with regard to incidental
vocabulary learning (Parabakht & Wesche, 1997; Wesche & Parabakht, 2000). In
addition to these text-based tasks, the efficacy of interactional tasks also attracts
rigorous attention (e.g., R. Ellis, 1995; R. Ellis & He, 1999; R. Ellis, Tanaka &
Yamazaki, 1994; Loschky, 1994; Newton, 1995). Drawing upon the Interaction
Hypothesis (Long, 1981) and the Output Hypothesis (Swain, 1985, 1995), this line of
research explores the effect of interaction on incidental vocabulary acquisition.
Nevertheless, as the current study aimed to investigate the effect of reading and
writing tasks on L2 vocabulary acquisition, the discussion of the interactional tasks,
which are designed mostly in the oral mode, is beyond the scope and relevance of the
present study and accordingly will be excluded. It should always be borne in mind
that research on incidental vocabulary learning encompasses a wide range of studies,
of which those on reading and writing tasks are but a fraction.
The preceding discussion of research work on incidental vocabulary learning
reveals a wide variety of factors that may play a part in fostering word retention. In a
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 38/96
28
pedagogic sense, while learner factors (e.g., reading ability) may be relatively hard to
maneuver and vary across learners, textual aids and learning tasks are amenable to
manipulation. The potential benefits these factors afford highlight the necessity for a
definite set of criteria for evaluating the efficacy of learning activities. In the
foregoing review of empirical studies, the superiority of a task or a textual aid was
often ascribed to its effectiveness in inducing "deep/elaborate processing" or more
"mental effort " (Hulstijn, 1992). Seemingly sensible as this explanation, the concept
of depth-of-processing suffers from an intractable lack of operationalizable definitions.
As Hulstijn and Laufer (2001) cogently argue, the need is compelling for a set of
theoretical criteria whereby various tasks may be graded with regard to the depths of
processing they induce. To counter the problem, Laufer and Hulstijn (2001) proposed
the Involvement Load Hypothesis as a viable route for the evaluation of task
effectiveness in terms of the processing depth, which will be detailed in the next
section.
2.3 The Involvement Load Hypothesis
To compensate for the lack of operationalizable definitions of the depth-of-
processing theory (Craik & Lockhart, 1972), Laufer and Hulstijn (2001) advanced the
Involvement Load Hypothesis for second language vocabulary learning, in which they
proposed a motivational-cognitive construct of involvement, comprising three basic
components: need , search, and evaluation. The need component refers to the
motivational, noncognitive dimension of involvement—the need based not on fear of
failure but on a drive to fulfill task requirements. Two degrees of prominence for
need, moderate and strong, are differentiated in terms of the intrinsic – extrinsic
distinction. For example, a need is moderate when it is imposed by an external agent
(e.g., the need to identify a word in a sentence as has been asked by the teacher). A
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 39/96
29
strong need is one that is intrinsically motivated (e.g., a need induced as a
consequence of the learner’s decision to look up a word when writing a composition).
Search and evaluation are, as opposed to need , the two cognitive dimensions of
involvement, which are conditional upon the allocation of attention to the form-
meaning relationship (R. Schmidt, 1994, 2001). Search refers to “the attempt to find
the meaning of an unknown L2 word or trying to find the L2 word form expressing a
concept (e.g., trying to find the L2 translation of an L1 word) by consulting a
dictionary or another authority (e.g., a teacher)” (Laufer & Hulstijn, 2001, p. 14).
Evaluation, on the other hand, refers to the assessment of an appropriate meaning or
use of a given word as is prescribed by a specific context. Put simply, the component
of evaluation implies “a comparison of a given word with other words, a specific
meaning of a word with its other meanings, or combining the word with other words
in order to assess whether a word (i.e., a form-meaning pair) does or does not fit its
context” (p. 14). For instance, in a reading task in which an L2 word looked up has
multiple meanings, the choice of the most appropriate meaning has to be achieved by
means of comparing all the meanings against the context. The component of
evaluation likewise has two degrees of prominence: When evaluation requires the use
of the new word in a given sentence or text, the evaluation is regarded as moderate
whereas an original sentence or text demands strong evaluation in that learners are
required to judge how other words will combine with the new word in point.
According to Laufer and Hulstijn (2001), all of the three involvement factors
may not be at work simultaneously during a reading-based task. The combination of
these factors with their degrees of prominence comprises involvement load. While it
is commonsensical to suggest that different tasks seem to impose varying task
demands on learners, the researchers took an endeavor to operationalize the abstract
load into the measurable concept of “task-induced involvement”. To further illustrate
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 40/96
30
this construct, Hulstijn and Laufer (2001) proposed the idea of an “involvement
index”, in which the absence of a factor is marked as 0, a moderate presence of a
factor equals 1, and a strong presence of a factor signifies 2. Two tasks with varying
involvement loads are presented alongside as an example. In the first task, the learner
is asked to write original sentences with some new words whose meanings are
provided by the teacher. In this case, the need is moderate (imposed by the teacher),
there is no search (meanings are provided), and strong evaluation is required in that
the learner has to use the new words in learner-generated contexts. In view of the
involvement indices, the task can be described as having an involvement index of 3 (1
+ 0 + 2). In the second task, the learner is required to read a text (with glosses of the
new words) and to answer comprehension questions. The task thus induces a
moderate need, yet neither search nor evaluation. The involvement index of this task
is accordingly 1 (1 + 0 + 0). Worded differently, the first task is postulated, according
to the construct of task-induced involvement, to induce a greater involvement load
than the second task. With the preliminaries of ways of measuring involvement load,
the basic contention of the Involvement Load Hypothesis is that “retention of
unfamiliar words is, generally, conditional upon the degree of involvement in
processing these words” (Hulstijn & Laufer, 2001, p. 545). In other words, the
researchers argue that the greater the involvement load, the better the retention.
Along with this basic formula, the researchers also called attention to the fact that all
three involvement factors may not share equal weight in determining task
effectiveness with regard to vocabulary learning. That is, the same involvement index
may not necessarily imply the same involvement load. For example, a task that
induces a strong need, search, and no evaluation (2 + 1 + 0 = 3) may not be equally
involving as one that induces a moderate need, no search, and a strong evaluation (1 +
0 + 2 = 3). In a similar vein, the researchers made no distinction between the effect of
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 41/96
31
input tasks and that of output tasks with identical involvement indices. The equation
of the involvement loads with same indices calls for further research.
Hulstijn and Laufer (2001) conducted a study testing whether retention of
vocabulary acquired incidentally is conditional upon the amount of task-induced
involvement. Advanced EFL learners at the college level in two countries (87 in the
Netherlands, 99 in Israel) participated in two parallel experiments, with three groups
in each country performing three learning tasks respectively. In the first task,
participants were asked to read a text (with the ten target words glossed in the margin)
and answer ten comprehension questions. In view of involvement load, this task
induced moderate need, but neither search nor evaluation. Its involvement index was
accordingly 1 (1 + 0 + 0). In the second task, the same text and the comprehension
questions were used, but the ten target words were deleted from the text and printed
with five distractors in random order with their L1 translations and L2 explanations
on a separate page. The learners were required to read the text, fill in the ten gaps
with words from the list of 15 words, and answer the comprehension questions. In
terms of involvement load, the second task induced moderate need, no search, and
moderate evaluation, as the words had to be used in a given context. Its involvement
index was thus 2 (1 + 0 + 1). In the third task, students were requested to write a
composition incorporating the ten target words, whose meanings were glossed and
examples of usage provided. With regard to involvement load, this task induced
moderate need, no search, and strong evaluation, as students had to incorporate the
words into their compositions. Its involvement index was therefore 3 (1 + 0 +2). The
three tasks and the involvement load each of them induced are summarized in Table 1
on the following page. After performing the tasks, the six groups of learners took
both an immediate posttest and a delayed posttest, in which they were asked to
provide the L1 equivalents (in this case, Dutch in the Netherlands and Hebrew in
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 42/96
32
Table 1
The task-induced involvement loads for the three tasks in
Hulstijn and Laufer (2001)
Involvement FactorsTask
Status of Target
Words Need Search EvaluationInvolvement Index
1.Reading
comprehension
Highlighted,
marginally-
glossed
1
2. Comprehension
+ Blank-filling
Glossed, listed
with distractors
2
3. Composition Glossed 3
Israel) or English (the second language of all the subjects) explanations for these
words, and also to indicate, in the immediate posttest, whether they had known the
words prior to the task.
As is indicated in Table 1, these three tasks were identical in inducing a
moderate need and requiring no search, as all the target words were provided together
with their meanings. Nevertheless, these tasks varied in their degrees of prominence:
the reading task entailed no evaluation as no judgment was to be made with regard to
the words; the second task required a moderate evaluation by asking learners to
choose correct words from a list, while the last task involved strong evaluation since
learners had to use the words in original contexts. Drawing on the Involvement Load
Hypothesis, Hulstijn and Laufer hypothesized that the retention scores of the ten
target words would be highest in Task 3 (composition-writing with target words),
lower in Task 2 (comprehension plus filling in target words), and lowest in Task 1
(reading comprehension). Results showed that the hypothesis posited for this study
was partially entertained—the retention score was related to the amount of task-
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 43/96
33
induced involvement load: Retention was highest in the composition task, lower in
reading plus fill-in, and lowest in the reading. Nonetheless, the results from the Dutch
groups revealed no significant differences between the effect of Task 1 (reading
comprehension) and Task 2 (reading plus fill-in). This lack of consistent support for
the Involvement Load Hypothesis along with the relatively few task types
investigated in this study3
points to a compelling need for further research.
Lee (2003) conducted a similar study to empirically test whether the retention
of English words was contingent upon the amount of task-induced involvement load.
EFL learners at the senior high school level performed tasks that involved either
dictionary use or provided glosses and that entail reading for comprehension with or
without gap-filling. Drawing on the Involvement Load Hypothesis (Laufer & Hulstijn,
2001) and previous research on incidental vocabulary learning, Lee hypothesized that
retention would vary across tasks with different involvement indices, that dictionary
use is more effective than glosses in view of vocabulary retention, and that reading for
comprehension coupled with gap-filling is more beneficial than reading for
comprehension alone in terms of vocabulary learning. Nevertheless, the study yielded
mixed results that for the most part defied the hypotheses. The researcher concluded
that the failure of the tasks to produce predicted results might be attributable to the
task design, the class difference, the teacher’s attitude and students’ behavior during
the experiment, or students’ exposure to the target words after school. These
arguments, though seemingly justified for the mixed results of Lee’s study, provided
explanations at a methodological rather than a theoretical level. For instance, Lee
suggested that some of the classes performing less involving tasks had better retention
scores than those doing more involving tasks as a result of the teacher’s attitude
toward the experiment (i.e., some teachers were more demanding than others when
3For examples of learning tasks amenable to manipulation for research or pedagogical purposes, see
Laufer and Hulstijn (2001).
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 44/96
34
asking students to perform the tasks and the posttests). And yet, this confounding
factor provides little theoretical justification for the inconsistent results of the testing
of the Involvement Load Hypothesis. Furthermore, factors other than those suggested
by Lee may well have confounded the findings revealed in her study. For example, as
is detailed in the preceding review section, dictionary use should be deemed as a
complicated factor to be investigated in its own right with respect to vocabulary
retention, yet in Lee’s study, little consideration was given to the dictionaries used
and the ways of their exploitation on the part of students. Worded differently, the
varying information students obtained from the use of dictionaries may have exerted
differential impact on students’ vocabulary knowledge, contributing to the mixed
patterns of vocabulary retention by students. Accordingly, further studies that take
cautious control of the aforementioned confounding factors are needed to provide neat
empirical investigations into the Involvement Load Hypothesis.
From the foregoing discussion of empirical studies on the Involvement Load
Hypothesis, it appears that little consideration has been given to the potential impact
of time-on-task on incidental vocabulary learning. In these studies, no attempt was
made to control for time-on-task, as the researchers claim that it is an inherent feature
of tasks not amenable to manipulation. Yet the better retention effect of tasks with a
higher involvement load may well have resulted from longer exposure (longer time-
on-task) rather than from deeper processing induced by this type of tasks. As is
reviewed in the discussion on the depth-of-processing hypothesis, the relationship
between processing time and depth still calls for delineation. Furthermore, it is
generally argued that equal length of exposure to targets should be deemed as a
necessary prerequisite to allow for equal comparison of the effect across different
tasks (see e.g., Paribakht & Wesche, 1997; Robinson, 1996, 1997; Swanborn & de
Glopper, 2002; Watanabe, 1997). To provide a further empirical testing of the
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 45/96
35
Involvement Load Hypothesis (Laufer & Hulstijn, 2001) while excluding the potential
confounding of processing time and depth, the present study was set up to scrutinize
the nature of the factors that facilitate vocabulary retention by treating time-on-task as
an independent factor. Likewise, to minimize the confounding effect of those factors
found in Lee’s study, the present investigation kept the need and search components
identical across tasks, focusing solely on the evaluation dimension, and some
precautions were taken to control possible methodological concerns (e.g., instruction
sheets for teachers to assure that the instructions were delivered as intended to avoid
teachers’ varying attitude toward the experiments; questionnaire for teachers to detail
the process of the experiments to keep track of students’ behavior during the
experiments).
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 46/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 47/96
37
posttests, with the difference being the participants and the factor of time-on-task.
3.2 Method
3.2.1 Participants
The participants in this study were six intact classes of first-graders in a
regular senior high school in northern Taiwan (with a total of 267 students), and each
of the classes was randomly assigned to one of the two experiments, thus leaving
three groups in each experiment. All the participants were native speakers of
Mandarin Chinese and also learners of English as a foreign language. All the first-
year classes consisted of male as well as female students, with a ratio of about one
male to one female. The number of students in each class was about 45. All the first-
graders had received English instruction for a minimum of three years and used
identical English textbooks and supplementary materials at the time of testing. Albeit
their various English proficiency levels, the participants shared an equal footing in
learning the target words provided that they had no preknowledge of these targets, a
proviso that were later checked with the results of the immediate posttest.
3.2.2 Instruments
The instruments that were exploited in this study comprised a reading text in
which the target words occurred, along with five reading comprehension questions of
the reading passage, and two (immediate and delayed) posttests.
3.2.2.1 The Target Words
Ten target words were selected from the reading text, based on three criteria:
(1) assumed unfamiliarity to the participants, (2) ease of incorporating the words into
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 48/96
38
a narrative describing personal experiences, and (3) ease of supplying a synonym or a
definition in English as well as an appropriate translation in Chinese in the two
vocabulary posttests. Each criterion was judged mainly by the researcher, who has
extensive experience in teaching English to Taiwanese senior high school students. A
further confirmation of the unfamiliarity of the target words to the participants was
done by checking the target words and their respective word families (e.g., the target
word suppression and words such as press and suppress) against the list of the 2,000
key words decreed by the Ministry of Education for elementary and junior high
school students as well as against the list of the target words in the main textbook
used by the participants at the time of testing. In other words, the participants may
have not been exposed to the target words via their English instruction in school. The
list of the ten target words was also submitted to several experienced English teachers
for comments on the unfamiliarity to first-graders at the senior high school level. As
final confirmation, the ten target lexical items were, prior to the experiment, checked
with the results of a pilot study with respect to the three criteria underlying the
selection of these target words (for a discussion of the pilot study, see the section on
procedures). The ten target words in the experiments, in the order of appearance in
the text, are annoy, hostile, conflict , unfortunately, suppression, maintain,
determination, circumstance, grit , and endure (four nouns, four verbs, one adjective,
and one adverb).
3.2.2.2 The Reading Text
The reading passage was adapted from an article in a reading-comprehension
book, Reading Master (Liu et al., 2002). The passage is about the suppression of
emotions and the potential threats of such behavior to the mental and physical health
of human beings. The text contains 331 words and was selected on several grounds:
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 49/96
39
(1) Participants are supposed to have some general idea of the topic yet little
knowledge of the words relevant to the issue; (2) Learners are capable of writing
about their personal experience pertinent to this topic. Five multiple-choice reading
comprehension questions were also adapted from the same reading material. The
reading passage as well as the comprehension questions was modified according to
the list of the 2,000 key words decreed by the Ministry of Education for elementary
and junior high school students such that the words in the text are roughly within the
participants’ vocabulary range, thereby facilitating comprehension (see e.g., Laufer,
1992). Furthermore, the understanding of the ten target lexical items is generally
relevant to the completion of the comprehension questions. Another criterion for
modifying the text is the number of occurrence for each target word. The passage was
revised in such a way that all the target words and their roots would appear only once
(see Appendix A).
3.2.2.3 The Posttests
Two vocabulary tests (immediate and delayed posttests) were administered in
this study to measure the participants’ vocabulary knowledge upon their completion
of the tasks and one week after their performing these tasks, respectively. No
vocabulary pretest was given directly to the participants so as to avoid undue attention
to the target words on the part of the students. The likelihood of target-word
familiarity, nonetheless, was assessed among a group of learners of similar language
proficiency (see the next section on procedures). The two posttests that were
exploited in this research are detailed as follows.
Immediate Posttest . Upon the completion of the tasks, the participants in both
experiments were unexpectedly given an immediate posttest, which contained a list of
the ten target words (word forms, see Appendix B). The learners were asked to
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 50/96
40
provide the Chinese equivalents or English explanations for these words, and also to
indicate whether they had known the words prior to the task.
Delayed Posttest . The participants in this study sat an unexpected delayed
posttest one week after their performing the tasks. This second vocabulary test is
composed of items identical to those in the immediate posttest, yet with the order of
the ten target words randomized (see Appendix C). These two vocabulary tests
measure receptive knowledge4
only, as this study aimed to investigate learners’
retention of the meaning of these target lexical items.
3.2.3 The Tasks
Three tasks with varying involvement loads were set to serve the purpose of
the present study. The two experiments of the study shared identical tasks, with the
differences being the participants and the factor of time-on-task.
Task 1: Reading comprehension with marginal glosses. Learners performing
Task 1 were provided with a text and five multiple-choice comprehension questions
based on the reading passage. These questions either incorporated some target words
or paraphrased the original sentences in which these targets occurred. Accordingly,
the successful completion of the questions entailed the understanding of the target
lexical items. In the reading passage, the ten target words were highlighted in bold
print and were marginally glossed in English (L2) as well as in Chinese (L1) (see
Appendix D). The task of the students was to read the text and answer the five
comprehension questions. In terms of involvement load, Task 1 induced moderate
need (imposed by an external agent), but neither search nor evaluation (as the
meanings of the target words were provided, and no assessment of the glosses was
4
For discussions on vocabulary knowledge, see Henriksen (1998); Hulstijn (2001); Laufer and Nation(1999); Nation (2001); Qian (1999); Read and Chapelle (2001), and N. Schmidt (2000).
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 51/96
41
necessary). Its involvement index was 1 (1 + 0 + 0).
Task 2: Reading comprehension plus “fill in.” Students performing Task 2
were given the same text and the same questions as those performing Task 1.
Nonetheless, in Task 2, the ten target words were deleted from the text, leaving ten
gaps to be filled in. The ten target lexical items, along with five distractors that did
not appear in the original passage, were printed in random order as a list on a separate
page with their English explanations and Chinese translations (see Appendix E). The
task was to read the article, fill in the ten gaps with the words from the list of 15
words, and answer the comprehension questions. With respect to involvement load,
Task 2 induced moderate need, no search, and moderate evaluation, as the students
had to evaluate whether a certain word fit a given context. Its involvement load index
was thus 2 (1 + 0 +1).
Task 3: Writing a composition with the ten target words. Participants
performing Task 3 were required to write a composition about their personal
experience when they felt strong emotions (e.g., anger, excitement, happiness). The
students were instructed that grammaticality was of secondary importance, and that
the clarity of the main idea of the composition as well as the incorporation of the ten
target words would account for the most part of the scoring criteria. The same ten
words and their respective glosses were given as in Task 1, but with a sample phrase
for each target word (see Appendix F). The provision of a phrase rather than a
sentence was to minimize the possibility that students might simply copy the
sentences to their compositions, and thus reduce the need for elaborate processing of
the words. In view of the involvement load, Task 3 induced moderate need, no search,
and strong evaluation, as words had to be used in an original context. Its involvement
index was accordingly 3 (1 + 0 + 2).
The task-induced involvement loads for the three tasks in the current study are
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 52/96
42
Table 2
The task-induced involvement loads for the three tasks in the present study
Involvement Factors
Task
Status of Target
Words Need Search EvaluationInvolvement Index
1.Reading
comprehension
Highlighted,
marginally-
glossed
1
2. Comprehension
+ Blank-filling
Glossed, listed
with distractors 2
3. Composition Glossed 3
summarized in Table 2. All the three tasks in this study were identical to those in
Hulstijn and Laufer (2001), since the aim of the present study was to investigate
whether the Involvement Load Hypothesis (Laufer & Hulstijn, 2001) holds for
participants at different proficiency levels from those in the aforementioned study.
The major difference between the two studies was the treatment of the factor of time-
on-task. Whereas time-on-task was regarded in the previous study as an inherent
feature of tasks not amenable to manipulation, this factor was deemed as an issue that
merited further investigation in this study. In the first experiment in the current study,
the three tasks were performed with time-on-task not controlled. In other words, all
the subjects were allowed to take as much time as they needed to complete their task.
Thus the first experiment bore much resemblance to Hulstijn and Laufer’s (2001)
study except for the proficiency level of the participants. On the other hand, in the
second experiment, exactly the same three tasks were performed, yet the time limit for
these tasks was kept identical. This requirement was achieved by giving differing
instructions to the three groups of learners. In addition to the emphasis on the
successful completion of the tasks, participants performing the first and second tasks
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 53/96
43
were informed of an upcoming test on the topical knowledge of the reading text,
which might effectively motivate them to keep concentrating on the tasks even after
they have finished them. On the other hand, students performing Task 3 were, in
addition to the emphasis on the incorporation of the ten target words into their
compositions, instructed to focus more on the expression of concepts than on
grammaticality so that this task would not too heavily tax learners’ cognitive capacity
and would thus be easier to accomplish within the time limit.
3.2.4 Procedures
The selection of the reading material as well as the design of tasks and
posttests drew heavily on the results of a pilot study, which will be detailed below,
followed by an account of the procedures of the main study.
The Pilot Study. Prior to the experiments proper, a pilot study was conducted
to serve the following functions: (1) to assess the likelihood of target-word familiarity
among learners of similar language proficiency to the participants’ in this study, (2) to
examine the appropriateness of the difficulty level of the materials to be used in the
main study, and (3) to investigate whether the differing instructions given in the three
tasks will effectively keep the learners concentrating on their assigned task and finish
it within a time limit of 25 to 30 minutes. An intact class of 45 first-graders in the
same senior high school who did not take part in the experiments proper were
randomly divided into three groups, each of which was assigned one of the three
aforementioned tasks and received different instructions (discussed in the preceding
section on the tasks). Results showed that the mean of knowledge was lower than 1
out of the ten target words. As the students in the experimental groups in the main
study were of similar language proficiency, it was assumed that most of the target
words would in effect be unfamiliar to them. Nonetheless, as will be detailed below,
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 54/96
44
preknowledge of the experimental groups was also checked at the end of the treatment.
The Main Study. The six experimental groups in the two experiments (three
groups in each experiment) were randomly assigned to perform one of the three tasks
during regular English class sessions. The students followed their English teachers’
instructions to perform the tasks and were not informed of an on-coming retention test
of the target lexical items in the reading passage. None of the tasks was presented as
a vocabulary-learning task, with the first two tasks being introduced as reading
activities and the third task a writing exercise. As is delineated in the section on the
tasks, time-on-task was not controlled in the first experiment. Consequently, the three
classes spent 16, 28, and 30 minutes accomplishing their assigned task, respectively.
The time limit in the second experiment, nevertheless, was kept identical across
different tasks (35 minutes). In both experiments, the work sheets were collected
after the completion of the task, and the students were given a vocabulary test sheet
with a list of the ten target lexical items, for which they were requested to provide
meanings (either in Chinese or English). The participants were also demanded to
indicate whether they had known the words prior to the experiments proper. This
practice was an additional check for the preknowledge of the ten target lexical items
on the part of the learners. The test sheets were then collected and not returned to the
students. One week later, the students received the same vocabulary test again. The
time limit for both the immediate and delayed posttests was 5 minutes.
3.2.5 Data Analysis
The vocabulary posttests were scored by the researcher, who has extensive
experience in teaching English to Taiwanese senior high school students. A word that
was not glossed (either in English or Chinese) or was wrongly glossed was assigned a
score of 0. A correct response received 1 point. A semantically approximate
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 55/96
45
response was awarded 0.5 point. If an answer was controversial in terms of the
degree of semantic approximation, opinions of other experienced teachers were
sought for the scoring of this item. Nevertheless, if a learner gave a correct response
but had also marked the target word as known prior to the experiment, the response
was scored as zero.
Identical statistical procedures were performed for the analysis of the retention
scores in both experiments. To begin with, the mean scores and standard deviations
of the immediate and delayed posttests of the six groups in these experiments were
tabulated. Retention scores of the immediate and delayed posttests were then
submitted to a 3 2 analysis of variance (ANOVA), with task type as the between-
subjects factor (reading, reading plus fill-in, writing) and time as the within-subjects
factor (immediate and delayed posttests). As the results revealed statistically
significant differences among the groups, post-hoc analyses (Scheffé tests) were
administered to pinpoint the location of the differences. Finally, six t-tests were
performed to further compare the retention effect of each task in the two experiments.
An alpha level of .05 was used for all statistical tests.
3.3 The Predictions
Drawing on the Involvement Load Hypothesis (Laufer & Hulstijn, 2001) and
previous research on incidental vocabulary learning, the following predictions were
formulated for both experiments to empirically test the effectiveness of this
hypothesis in predicting task efficacy of the retention of English vocabulary in an
incidental-learning situation in the Taiwanese EFL context:
(1) In the first experiment (time-on-task not controlled), the retention scores of
the ten target words will be highest in Task 3 (composition with
incorporated target words), lower in Task 2 (reading comprehension plus
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 56/96
46
filling in target words), and lowest in Task 1 (reading comprehension with
marginal glosses for target words).
(2) In the second experiment (time-on-task controlled), the factor of time-on-
task will not exert impact on the retention scores of the ten target words.
Therefore, the retention scores of the ten target words will be highest in
Task 3, lower in Task 2, and lowest in Task 1.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 57/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 58/96
48
Table 3
Number of participants, mean retention scores, and standard deviations
of the immediate and delayed posttests in Experiment I
Immediate Posttest Delayed PosttestTask n
M SD M SD
Task 1: Reading 45 1.1411a
1.5274 0.4222a
0.5431
Task 2: Reading + fill-in 45 3.2778b
1.9845 1.0889b
1.0185
Task 3: Writing 45 5.6667c
2.7199 1.9889c
1.8753
Note. The possible maximum score was 10. Means in the same column that do not share the same
letters differ significantly at p
.05 by the Scheffé test. In the immediate posttest, for instance, there
were significant differences among all the three tasks.
Table 4
ANOVA on the retention scores of the immediate
and delayed posttests in Experiment I
Source Sum of Squares df Mean Square F p
Between-subjects
Task
S within-group error
383.496
556.556
2
132
191.748
4.216
45.478 .000
Within-subjects
Time
Time Task
Time S within-group error
352.490
81.652
258.233
1
2
132
352.490
40.826
1.956
180.181
20.869
.000
.000
Note. S ¡ subjects.
whether there was statistically significant effect of each factor, retention scores were
then submitted to a 3 2 analysis of variance (ANOVA), with task as the between-
subjects factor (reading, reading plus fill-in, writing) and time (immediate and
delayed posttests) as the within-subjects factor (see Table 4 above).
The ANOVA results indicated a significant task effect, F (2, 132) = 45.478; p
.001, as well as a significant time effect, F (1, 132) = 180.181; p .001, and a
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 59/96
49
significant task time interaction, F (2, 132) = 20.869; p .001. As a significant
task effect was obtained, Scheffé post hoc multiple-range tests were administered to
pinpoint the location of the differences (see Table 3).
The Scheffé test on the immediate posttest scores in Experiment I revealed
that in the immediate posttest, the mean scores of all the three groups were
significantly different from each other. As seen in Table 3, the mean score of the
writing group (Task 3) was significantly better than that of the reading plus fill-in
group (Task 2), which in turn was significantly higher than that of the reading group
(Task 1).
A similar pattern was observed in the retention scores of the delayed posttest
in Experiment I. A second Scheffé test indicated that in the delayed posttest, there
were statistically significant differences between all the pairs. Drawing on the mean
retention scores in Table 3 and the results of the Scheffé analysis, it appears that the
group performing Task 3 (writing) got significantly better scores than the group doing
Task 2 (reading plus fill-in), whose mean score was in turn significantly better than
that of the group performing Task 1 (reading). In brief, the figures in Table 3
demonstrated substantial and consistent support for the prediction. Retention scores
of both the immediate and delayed posttests patterned together revealing a superiority
of the performance in the group performing Task 3 (writing) over that in the group
doing Task 2 (reading plus fill-in), which, in turn, was higher than that in the group
performing Task 1 (reading).
As delineated earlier, a significant time effect as well as a significant task
time interaction was found apart from a significant task effect (see Table 4 for details).
The effect of time and that of task time interaction on the retention scores are
evident in the lines in Figure 1 on the following page. The sharp decline of the lines
shows that the performance in all the three groups degenerated significantly at the
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 60/96
50
delayed posttest, a phenomenon frequently ascribed to the incidental nature of
exposure to target words in studies on vocabulary retention. Furthermore, the initial
differences observed among the performance of the three groups were reduced at the
delayed posttest, indicating that the effect of task type on vocabulary retention may
have been attenuated by the lapse of time. Nonetheless, the pattern of performance in
the three groups on the delayed posttest remained similar to that on the immediate
posttest, suggesting that the effect of task persisted through the interval between the
two posttests.
¡
¢
£
¤
¥
¦§ § ! # % % ) 1 3 ! # % %
5 67
89
@A § C % E # G # I A R G # S ! ! G I # G § C R @ % Y `
@A § C % E # G # I A R G # S ! ! G I # G § C R @ % Y
¡
@A § C % E # G # I A R G # S ! ! G I # G § C R @ % Y ¥
Figure 1
Retention scores of the immediate and delayed posttests in Experiment I
4.1.2 Discussion
The findings of Experiment I (time-on-task not controlled) in the present study
provide strong support for the Involvement Load Hypothesis (Laufer & Hulstijn,
2001), which claims that tasks with a higher involvement load are more effective for
vocabulary retention than tasks with a lower involvement load. As detailed earlier, it
was predicted that the retention scores would be highest in Task 3, lower in Task 2,
and lowest in Task 1. This prediction was fully borne out in both the immediate and
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 61/96
51
delayed posttests, indicating that task type was a factor of critical importance with
regard to incidental vocabulary learning.
Furthermore, in accordance with the results of most previous studies on
incidental vocabulary acquisition (e.g., Herman et al., 1987; Hulstijn & Laufer, 2001;
Nagy et al., 1985; Watanabe, 1997), the present study reports a significant decline in
the performance of all the three groups from the immediate posttest to the delayed
posttest. This finding provides further empirical backing for the claim that incidental
learning of vocabulary, though possible through reading or writing tasks, may be of
limited effectiveness unless it is coupled with some complementary measures (e.g.,
repeated exposure to target words on the part of learners, see Watanabe, 1997). As is
evident from the low mean scores of all the participants on the delayed posttest, one
single exposure to a vocabulary item is scarcely enough to leave a sufficiently deep
imprint in memory that keeps a word available for retrieval in the long term.
Likewise, the current study found that the initial advantage of tasks with a
higher involvement load was weakened as time elapsed (i.e., the significant task
time interaction), suggesting that further reinforcement may be essential to sustain the
superiority of more “involving” tasks. In the present investigation, words that had
been initially processed with higher involvement load were retained better than words
that had been processed with lower involvement load, a finding consonant with the
claim that elaborate processing fosters retention (e.g., Chaffin & Herrmann, 1983;
Craik & Lockhart, 1972; Eysenck, 1993). Yet the somewhat reduced differences in
the mean scores across the three groups at the delayed posttest point to a compelling
need for measures that help consolidate the superior effect of more “involving” tasks
(e.g., follow-up vocabulary exercises on the target items).
In a nutshell, the findings of Experiment I fully entertain the Involvement
Load Hypothesis (Laufer & Hulstijn, 2001), providing sufficient grounds for
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 62/96
52
supposing that learning tasks with a greater involvement load induce more elaborate
processing of the target words, which in turn leads to better retention of the
vocabulary items. Nonetheless, such findings clearly run counter to the results of
Lee’s (2003) study, which was conducted with subjects comparable to those in the
present study (senior high school students) yet reported mostly negative evidence for
the hypothesis. Plausible reasons for such discrepancy in the results of the two
studies may be that the confounding variables Lee has enumerated (e.g., teachers’
attitude, students’ psychology) as well as other possible confounding factors (e.g.,
dictionary use) were controlled in the present study, and that different components
were investigated in these two studies (i.e., search and evaluation in Lee’s study
while evaluation in the current study). The veracity of the foregoing reasons remains
to be verified in future investigations into the Involvement Load Hypothesis.
4.2 Results and Discussion of Research Question 2
Does the factor of time-on-task in its own right exert impact on vocabulary
retention in an incidental-learning context?
4.2.1 Results
According to Laufer and Hulstijn (2001), time-on-task is a factor inherent in
tasks, thus not amenable to manipulation. Yet the better retention effect of tasks with
a higher involvement load found in Hulstijn and Laufer's (2001) study may well have
resulted from longer exposure to the target words (i.e., longer time-on-task) rather
than from deeper processing induced by this type of tasks. Accordingly, in tune with
previous emphasis on equal length of exposure to targets in studies on task effect (e.g.,
Paribakht & Wesche, 1997; Robinson, 1996, 1997; Swanborn & de Glopper, 2002;
Watanabe, 1997), the factor of time-on-task was held constant in Experiment II to
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 63/96
53
Table 5
Number of participants, mean retention scores, and standard deviations
of the immediate and delayed posttests in Experiment II
Immediate Posttest Delayed PosttestTask n
M SD M SD
Task 1: Reading 44 3.1932a
2.1437 0.5227a
0.6985
Task 2: Reading + fill-in 44 4.0909a
2.2001 1.6477b
1.8726
Task 3: Writing 44 6.0909b
2.5683 1.7045b
1.6682
Note. The possible maximum score was 10. Means in the same column that do not share the same
letters differ significantly at p
.05 by the Scheffé test.
Table 6
ANOVA on the retention scores of the immediate and
delayed posttests in Experiment II
Source Sum of Squares df Mean Square F p
Between-subjects
Task
S within-group error
183.074
645.551
2
129
91.537
5.004
18.292 .000
Within-subjects
Time
Time Task
Time S within-group error
661.833
49.661
335.256
1
2
129
661.833
24.830
2.599
254.661
9.554
.000
.000
Note. S ¡
subjects.
render equal comparison of the effect across tasks with different involvement loads.
Drawing upon the Involvement Load Hypothesis, a second prediction was formulated
as follows:
In the second experiment, the factor of time-on-task will not exert impact on
the retention scores of the ten target words. Therefore, the retention scores of the ten
target words will be highest in Task 3, lower in Task 2, and lowest in Task 1.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 64/96
54
Retention scores of the participants who were present at both the immediate
and delayed posttests in the second experiment are displayed in Table 5. To examine
the effect of each factor, retention scores were further submitted to another 3 2
analysis of variance (ANOVA), with task as the between-subjects factor (reading,
reading plus fill-in, writing) and time (immediate and delayed posttests) as the within-
subjects factor (see Table 6).
The ANOVA results revealed a significant task effect, F (2, 129) = 18.292; p
.001, as well as a significant time effect, F (1, 129) = 254.661; p .001, and a
significant task time interaction, F (2, 129) = 9.554; p .001. As a significant task
effect was obtained, Scheffé post hoc multiple-range tests were performed to locate
the statistically significant differences (see Table 5).
The Scheffé test indicated that in the immediate posttest, the mean score of the
writing (Task 3) group was significantly different from the mean scores of the reading
(Task 1) and reading plus fill-in (Task 2) groups, but that the mean scores of the latter
two groups did not differ significantly from each other. From the mean scores and the
Scheffé analysis in Table 5, it emerged that the mean scores of the three groups
conformed to the pattern of a superiority of Task 3 over Task 2, which in turn, was
better than Task 1, albeit the difference between the latter two tasks was not
statistically significant.
A somewhat different pattern was observed in the retention scores of the
delayed posttest in Experiment II. A second Scheffé test (see Table 5) showed that in
the delayed posttest, there were statistically significant differences between the mean
score of the group performing Task 1 (reading) and the means of the groups doing
Task 2 (reading plus fill-in) and Task 3 (writing), but that the mean scores of the latter
two groups did not differ significantly from each other. The means and the results of
the Scheffé analysis in Table 5 revealed that in the delayed posttest, generally, the
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 65/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 66/96
56
4.2.2 Discussion
The results of Experiment II (time-on-task controlled) provide partial support
for the Involvement Load Hypothesis, in that on both posttests Task 3 yielded higher
retention than Task 2, which in turn produced better retention than Task 1, and yet,
the differences among these tasks were not always statistically significant. The lack
of consistently significant differences among the three tasks points to the possibility
that the effect of task type, albeit an essential factor of vocabulary learning, may be
susceptible to other factors when the length of exposure to target items is held
constant. In other words, when learners are exposed to new words for an equal length
of time performing different tasks, the construct of task-induced involvement load
may not be the sole determinant of the superior effect of more "involving" tasks.
When the participants in the current investigation were given the same amount of time
to perform these tasks, it was found that the writing task fared significantly better than
the other two tasks in the immediate posttest, but that the two reading tasks (reading,
reading plus fill-in) did not significantly differ from each other. It thus appears that
task-induced involvement load may provide only partial explanation for the different
impact that the three tasks in point exerted on vocabulary retention. To be more
specific, the differential cognitive processing that each task induces may be too
sophisticated to be quantified by the simplified criteria that Laufer and Hulstijn (2001)
have offered for grading the evaluation factor. That is to say, the difference of a
“plus” in the evaluation component between Task 3 (++evaluation) and Task 2
(+evaluation) did not bear the same weight (impact on incidental vocabulary learning)
as that one “plus” between Task 2 (+evaluation) and Task 1 (-evaluation).
Accordingly, further research is needed to scrutinize the nature of the evaluation
factor so as to refine the criteria for grading this component, rendering the hypothesis
more effective in predicting task efficacy.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 67/96
57
Apart from a significant task effect, the results of Experiment II also show
poor vocabulary retention at the delayed posttest as commonly found in many
previous studies on incidental vocabulary acquisition (e.g., Hulstijn & Laufer, 2001;
Watanabe, 1997), indicating that substantial learning cannot be expected with one
exposure to target items, however "involving" a task is. An investigation into the
results of the two experiments in the present study shows that task efficacy of
vocabulary learning is largely constrained by the lapse of time between the two
posttests, regardless of the length of the initial exposure to the target words.
Furthermore, the second experiment reports a significant decline of the initial
superiority of the writing task (Task 3) from the immediate posttest to the delayed
posttest (i.e., the significant task time interaction), whereas the difference between
the retention scores of Task 2 and Task 1 remains relatively unaffected. This finding
suggests that when learners are granted equal length of exposure to the target words,
the differential task effects are, to some extent, still susceptible to the influence of the
interval between the two posttests.
Whereas the results of the two experiments in the current study appear
compelling for the construct of task-induced involvement load, the lack of statistically
significant differences between Task 2 and Task 1 as observed on the immediate
posttest in Experiment II suggests that time-on-task may be a factor that also bears
considering in investigations of task effect on vocabulary retention. As detailed
earlier, the findings of the two experiments suggest that task-induced involvement
load, as applied to different task types, may be a prime determinant of task efficacy,
yet a closer investigation into the effect of identical tasks in the two experiments
reveals another systematic pattern. As mentioned in the methodology section, the
time spent for the completion of tasks in Experiment I was 16 minutes for Task 1, 28
minutes for Task 2, and 30 minutes for Task 3, while in Experiment II, the time limit
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 68/96
58
Table 7
Mean scores of the immediate and delayed posttests in Experiment I and II
Experiment I Experiment IITask
Immediate Delayed Immediate Delayed
Task 1: Reading 1.1411 0.4222 3.1932 0.5227
Task 2: Reading + fill-in 3.2778 1.0889 4.0909 1.6477
Task 3: Writing 5.6667 1.9889 6.0909 1.7045
for all the three tasks was 35 minutes. The figures in Table 7 above show that in
general, the participants spending more time for the completion of the same task in
the two experiments (i.e., longer time-on-task) got better retention scores on both the
immediate and delayed posttests (except the scores of the two writing groups on the
delayed posttest).
In view of the fact that for each task in the two experiments, longer time-on-
task generally led to better retention, six separate t-tests were then performed on the
retention scores to further compare the retention effect of each task (see Table 8 on
the following page). The results revealed a significant difference between the effect
of Task 1 on the immediate posttest in the two investigations as well as a marginally
significant difference between the effect of Task 2 on both posttests in these
experiments, suggesting that when the participants performed identical tasks, longer
time-on-task, hence longer exposure to target items, may lead to significantly better
retention. For instance, when the participants spent 16 and 35 minutes in Experiment
I and II respectively to complete the reading task, the same task yielded significantly
different retention scores in the two experiments, with the latter reading group
significantly outperforming the former one in vocabulary retention.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 69/96
59
Table 8
Comparisons of mean scores of the immediate and
delayed posttests between Experiment I and II
t-test for Equality of MeansTask Posttest
t df Sig. (2-tailed)
Immediate 4.525 87 .000*Task 1: Reading
Delayed .759 87 .450
Immediate 1.832 87 .070#Task 2: Reading + fill-in
Delayed 1.754 87 .083#
Immediate .756 87 .452Task 3: WritingDelayed .755 87 .452
*significant at the .05 level. # marginally significant.
In summary, the findings of Experiment II (time-on-task controlled) partially
support the Involvement Load Hypothesis (Laufer & Hulstijn, 2001), with tasks with
a greater involvement load generally producing better vocabulary retention than tasks
with a lower involvement load, yet the superiority of more “involving” tasks was not
always statistically significant. Furthermore, the comparison of retention scores of
each task in the two experiments indicates that longer time-on-task may produce more
facilitative effect as compared with shorter exposure to the target words when learners
are asked to perform identical tasks. Taken together, it is reasonable to infer from the
results of the two experiments that the Involvement Load Hypothesis does have
considerable merit in predicting task efficacy in terms of vocabulary retention, yet the
factor of time-on-task also has some role to play and should thus be given more
serious investigative attention in studies on task effect on incidental vocabulary
learning.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 70/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 71/96
61
With regard to the question of whether the factor of time-on-task impacts on
vocabulary retention, the results point in a positive direction. On the whole, when
participants were given the same amount of time for the completion of tasks (i.e.,
time-on-task controlled), more involving tasks were found to be more effective for
vocabulary retention, as predicted by the Involvement Load Hypothesis, yet the
differences in retention scores were not consistently significant. Furthermore, a
comparison of the same task in the two experiments (time-on-task not controlled and
time-on-task controlled, respectively) revealed that for an identical task, longer
exposure (i.e., longer time-on-task) generally led to better retention. It thus emerges
from the above findings that time-on-task, albeit not as critical a component as the
construct of task-induced involvement load, may still have some role to play in task
efficacy.
5.2 Implications
Theoretically, the findings of the present study provide generally positive
support for the Involvement Load Hypothesis, which contends that the retention of
unfamiliar words is contingent upon the degree of involvement in processing these
words. Yet the lack of constant superiority of more “involving” tasks (i.e. tasks that
induce a greater involvement load) over less involving ones suggests that the
hypothesis may stand in need of further modification. Put differently, in the second
experiment, the failure of the reading plus fill-in task (with an involvement index of 2)
to consistently produce significantly better retention than the reading task (with an
involvement index of 1) illustrates the inadequacy of the Involvement Load
Hypothesis as a refined framework for predicting task efficacy. To be specific, the
criteria that Laufer and Hulstijn (2001) have proposed for grading the evaluation
component may be too simplified for the sophisticated nature of the cognitive
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 72/96
62
processing that different tasks induce. More research undertakings are thus essential
to further clarify the nature of this factor, rendering the construct of task-induced
involvement load a more valid theoretical perspective.
Likewise, the results of the study suggest that the factor of time-on-task in
itself merits more serious empirical interest in further investigation. According to
Laufer and Hulstijn (2001), time-on-task is an inherent property of tasks rather than a
separate variable. Yet the findings of the current study indicate that when time-on-
task is held constant, the superior effect of more involving tasks is no longer
consistently significant, and for an identical task, longer time-on-task generally leads
to better retention. These findings apparently cast doubt on the foregoing claim that
time-on-task is inherent in tasks, hence not amenable to manipulation. Conversely,
the position argued in this section is that this factor impacts on vocabulary retention,
and therefore warrants extensive exploration in future research on task efficacy.
In a pedagogical sense, the implications of the findings of the present study are
also readily apparent. To begin with, the low vocabulary retention rate as found in
both experiments endorses the notion that one incidental encounter with unfamiliar
words is scarcely enough for acquisition to take place, no matter how involving a task
is (see e.g., Hulstijn & Laufer, 2001; Nagy et al., 1985; Watanabe, 1997). It is
contended that at least ten exposures are required to make a word a promising
candidate for acquisition (Nation & Wang, 1999). Yet exposure by itself may not
suffice for vocabulary learning, in that many words may simply go unperceived.
Since incidental learning of vocabulary is a gradual process, substantial vocabulary
knowledge may best be built upon repeated exposures as well as elaborate processing
of lexical items. Accordingly, tactful exploitation of multiple tasks with different
involvement loads may foster optimal vocabulary development in learners.
A second pedagogical implication from the current study is that the
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 73/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 74/96
64
decisions with regard to the exploitation of learning tasks. In the first experiment of
the current study (time-on-task not controlled), the participants spent the most time
for the completion of the writing task, which produced significantly better retention
than the other two reading tasks. Nevertheless, such involving tasks can hardly be the
sole focus of practice in a language-learning environment on account of their time-
consuming nature. Instructors should thus circumspectly balance the use of several
simpler tasks with a few involving tasks for optimal acquisition results.
5.3 Limitations of the Study and Suggestions for Future Research
In addition to providing an empirical testing of the Involvement Load
Hypothesis (Laufer & Hulstijn, 2001) for its merit in predicting task efficacy in terms
of incidental vocabulary learning, the current study also evaluates the role that the
factor of time-on-task plays in this hypothesis. Nonetheless, the investigations
conducted in the present study are liable to several restrictions.
First of all, the participants in the study were provided with only one exposure
to the target words. In tune with previous studies on the Involvement Load
Hypothesis (Hulstijn & Laufer, 2001; Lee, 2003), the current study investigated the
short-term effect of tasks with different involvement loads on vocabulary learning in
one-shot experiments, which are particularly susceptible to several factors. For
example, given that one exposure to target lexical items scarcely leaves deep imprint
in memory, and that the study measured only receptive knowledge, learners might
have resorted to guesswork for the completion of the posttests. That is to say,
students might have made wild guesses on the tests for fear of getting poor grades.
Future research on the Involvement Load Hypothesis should therefore examine the
long-term effect of the hypothesis by providing learners with multiple exposures to
the target words so as to attenuate the possible effect of the aforementioned factors on
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 75/96
65
the acquisition results. On the other hand, investigation into the relationship between
task type and the number of exposures may also shed light on the effectiveness of the
hypothesis from a long-term perspective: whether the elaborate processing induced by
an involving task can compensate for the fairly limited number of times that learners
are exposed to unfamiliar words as commonly found in a language-learning
environment. Future studies should thus compare the relative effectiveness of one
involving, yet presumably time-consuming, task with that of several simpler tasks that
take up less instruction time.
Another limitation of the current study is that only three tasks (reading,
reading plus fill-in, writing) were investigated in the testing of the Involvement Load
Hypothesis. In view of the striking disparities of the results reported in previous
studies on the Involvement Load Hypothesis (Hulstijn & Laufer, 2001; Lee, 2003),
the present study aimed to empirically test the contentions of this hypothesis by
exploiting the same tasks in Hulstijn and Laufer’s (2001) study. Nevertheless, since
the list of task type is constrained only by practitioners’ creativity, it is important for
further research to examine more tasks with different involvement loads if the
Involvement Load Hypothesis were to open up exciting vistas for application as well
as for theory. One such productive venue for future research would be text-based
vocabulary-learning activities, as the ones deployed in the current study, which, when
deployed on a regular basis, provide accumulative and diverse exposure to target
lexical items that result in effective retention within a limited instructional period
(Wesche & Parabakht, 2000). Future research on such tasks should make substantial
contributions to the discussion of the effectiveness of the Involvement Load
Hypothesis.
Finally, the present study is restricted in the sense that only one component,
evaluation, was investigated in the two experiments. As delineated earlier, the study
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 76/96
66
attempted to further scrutinize the contentions of the Involvement Load Hypothesis by
examining the three tasks in Hulstijn and Laufer’s (2001) study, in which the factors
of need and search were held constant whereas three degrees of evaluation (absent,
moderate, strong) were explored. Albeit the current study yielded results that for the
most part corroborate Hulstijn and Laufer’s (2001) findings, it remains to be
determined whether this hypothesis is still well-founded when more components are
involved. According to the hypothesis, the involvement load a task induces is
represented by the total pluses of each factor together with their degrees of
prominence. Yet it is not clear whether a plus for search (i.e., search for the meaning
of a word) plays as important a role as a plus for evaluation (e.g., choosing among
several meanings of a word). Lee (2003) reported some strikingly negative evidence
for the Involvement Load Hypothesis in her study, in which both search and
evaluation were manipulated. A plausible reason for the similar results of the present
study and of Hulstijn and Laufer’s (2001) study as well as for the glaring
discrepancies between the findings of these two studies and those of Lee’s (2003)
research may be that the factor investigated in the first two studies (i.e., evaluation)
was different from those in the last study (i.e., search and evaluation), and that all the
three components (need , search, and evaluation) are not equally important for
vocabulary learning. Empirical research should thus establish the relative weight
(impact on incidental vocabulary learning) of each factor by comparing tasks with the
same number of components but with a different distribution of the factors involved.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 77/96
67
REFERENCES
Baddeley, A. D. (1978). The trouble with levels: A reexamination of Craik and
Lockhart's framework for memory research. Psychological Review, 85, 139-
152.
Baddeley, A. (1998). Human memory: Theory and practice. Boston: Allyn and Bacon.
Berry, D. C. (1994). Implicit and explicit learning of complex tasks. In N. Ellis (Ed.),
Implicit and explicit learning of languages (pp. 147-164). London: Academic
Press.
Bialystok, E. (1979). Explicit and implicit judgments of L2 grammaticality. Language
Learning, 29, 81-103.
Chaffin, R., & Herrmann, D. J. (1983). A classroom demonstration of depth of
processing. Teaching of Psychology, 10, 105-107.
Cho, K., & Krashen, S. D. (1994). Acquisition of vocabulary from the Sweet Valley
Kids Series: Adult ESL acquisition. Journal of Reading, 37 , 662-667.
Chomsky, N. (1986). Knowledge of language: Its nature, origin and use. New York:
Praeger.
Coady, J. (1997a). L2 vocabulary acquisition: A synthesis of the research. In J. Coady
& T. Huckin (Eds.), Second language vocabulary acquisition (pp. 273-290).
New York: Cambridge University Press.
Coady, J. (1997b). L2 vocabulary acquisition through extensive reading. In J. Coady
& T. Huckin (Eds.), Second language vocabulary acquisition (pp. 225-237).
New York: Cambridge University Press.
Craik, F. I. M., & Lockhart, R. S. (1972). Levels of processing: A framework for
memory research. Journal of Verbal Learning and Verbal Behavior, 11, 671-
684.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 78/96
68
Craik, F. I. M., & Tulving, E. (1975). Depth of processing and the retention of words
in episodic memory. Journal of Experimental Psychology: General, 104, 268-
294.
Dickinson, J. (1978). Retention of intentional and incidental motor learning. Research
Quarterly, 49, 437-441.
Diekhoff, G. M., Brown, P. J., & Dansereau, D. F. (1982). A prose learning strategy
training program based on network and depth-of-processing models. Journal
of Experimental Education, 50, 180-184.
Doughty, C., & Williams, J. (1998). Pedagogical choices in focus on form. In C.
Doughty & J. Williams (Eds.), Focus on form in classroom second language
acquisition (pp. 197-262). New York: Cambridge University Press.
Elley, W. B. (1989). Vocabulary acquisition from listening to stories. Reading
Research Quarterly, 24, 174-187.
Ellis, N. (1994a). Implicit and explicit language learning: An overview. In N. Ellis
(Ed.), Implicit and explicit learning of languages (pp. 1-43). London:
Academic Press.
Ellis, N. (1994b). Vocabulary acquisition: The implicit ins and outs of explicit
cognitive mediation. In N. Ellis (Ed.), Implicit and explicit learning of
languages (pp. 211-282). London: Academic Press.
Ellis, N. (2002). Frequency effects in language processing. Studies in Second
Language Acquisition, 24, 143-188.
Ellis, R. (1993). The structural syllabus and second language acquisition. TESOL
Quarterly, 27 , 91-113.
Ellis, R. (1994). Implicit/explicit knowledge and language pedagogy. TESOL
Quarterly, 28, 166-172.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 79/96
69
Ellis, R. (1995). Modified oral input and the acquisition of word meanings. Applied
Linguistics, 16 , 409-441.
Ellis, R., & He, X. (1999). The roles of modified input and output in the incidental
acquisition of word meanings. Studies in Second Language Acquisition, 21,
285-301.
Ellis, R., Tanaka, Y., & Yamazaki, A. (1994). Classroom interaction, comprehension,
and the acquisition of L2 word meanings. Language Learning, 44, 449-491.
Eysenck, M. W. (1982). Incidental learning and orienting tasks. In C. R. Puff (Ed.),
Handbook of research methods in human memory and cognition (pp. 197-228).
New York: Academic Press.
Eysenck, M. W. (1993). Principles of cognitive psychology. Hove, UK: Lawrence
Erlbaum Associates.
Eysenck, M. W., & Eysenck, M. C. (1979). Processing depth, elaboration of encoding,
memory stores, and expended processing capacity. Journal of Experimental
Psychology: Human Learning and Memory, 5, 472-484.
Fukkink, R. G., Blok, H., & de Glopper, K. (2001). Deriving word meaning from
written context: A multicomponential skill. Language Learning, 51, 477-496.
Gass, S. (1999). Incidental vocabulary learning. Studies in Second Language
Acquisition, 22, 319-333.
Glover, J. A., Rankin, J., Langner, N., Todero, C., & Dinnel, D. (1985). Memory for
sentences and prose: Levels-of-processing or transfer-appropriate-processing?
Journal of Reading Behavior, 17 , 215-234.
Henriksen, B. (1998). Three dimensions of vocabulary development. Studies in
Second Language Acquisition, 21, 303-317.
Herman, P. A., Anderson, R. C., Pearson, P. D., & Nagy, W. E. (1987). Incidental
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 80/96
70
acquisition of word meaning from expositions with varied text features.
Reading Research Quarterly, 22, 263-284.
Huckin, T., & Coady, J. (1999). Incidental vocabulary acquisition in a second
language. Studies in Second Language Acquisition, 21, 181-193.
Hulstijn, J. H. (1992). Retention of inferred and given word meanings: Experiments in
incidental vocabulary learning. In P. J. L. Arnaud & H. Béjoint (Eds.),
Vocabulary and applied linguistics (pp. 113-125). London: Macmillan.
Hulstijn, J. H. (1997). Mnemonic methods in foreign language vocabulary learning:
Theoretical considerations and pedagogical implications. In J. Coady & T.
Huckin (Eds.), Second language vocabulary acquisition (pp. 203-224).
Cambridge: Cambridge University Press.
Hulstijn, J. H. (2001). Intentional and incidental second language vocabulary learning:
A reappraisal of elaboration, rehearsal and automaticity. In P. Robinson (Ed.),
Cognition and second language instruction (pp. 258-286). Cambridge:
Cambridge University Press.
Hulstijn, J. H., Hollander, M., & Greidanus, T. (1996). Incidental vocabulary learning
by advanced foreign language students: The influence of marginal glosses,
dictionary use, and reoccurrence of unknown words. The Modern Language
Journal, 80, 327-339.
Hulstijn, J. H., & Laufer, B. (2001). Some empirical evidence for the involvement
load hypothesis in vocabulary acquisition. Language Learning, 51, 539-558.
Hulstijn, J. H., & Trompetter, P. (1998). Incidental learning of second language
vocabulary in computer-assisted reading and writing tasks. In D. Albrechtsen,
B. Henriksen, I. M. Mees & E. Poulsen (Eds.), Perspectives on foreign and
second language pedagogy (pp. 191-200). Odense, Denmark: Odense
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 81/96
71
University Press.
Joe, A. (1995). Text-based tasks and incidental vocabulary learning. Second
Language Research, 11, 149-158.
Joe, A. (1998). What effects do text-based tasks promoting generation have on
incidental vocabulary acquisition? Applied Linguistics, 19, 357-377.
Johnstone, T., & Shanks, D. R. (2001). Abstractionist and processing accounts of
implicit learning. Cognitive Psychology, 42, 61-112.
Knight, S. (1994). Dictionary use while reading: The effects on comprehension and
vocabulary acquisition for students of different verbal abilities. The Modern
Language Journal, 78, 285-299.
Konopak, B., Sheard, C., Longman, D., Lyman, B., Slaton, E., Atkinson, R. et al.
(1987). Incidental versus intentional word learning from context. Reading
Psychology, 8, 7-21.
Krashen, S. D. (1982). Principles and practice in second language acquisition. New
York: Pergamon.
Krashen, S. D. (1985). The Input Hypothesis: Issues and implications. London:
Longman.
Krashen, S. D. (1989). We acquire vocabulary and spelling by reading: Additional
evidence for the input hypothesis. The Modern Language Journal, 73, 440-
464.
Krashen, S. D. (2002). Explorations in language acquisition and use: The Taipei
lectures. Taipei, Taiwan: Crane.
Laufer, B. (1992). How much lexis is necessary for reading comprehension? In P. J. L.
Arnaud & H. Béjoint (Eds.), Vocabulary and applied linguistics (pp. 126-132).
London: Macmillan.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 82/96
72
Laufer, B. (2001). Reading, word-focused activities and incidental vocabulary
acquisition in a second language. Prospect, 16 , 44-55.
Laufer, B., & Hulstijn, J. H. (2001). Incidental vocabulary acquisition in a second
language: The construct of task-induced involvement. Applied Linguistics, 22,
1-26.
Laufer, B., & Nation, P. (1999). A vocabulary-size test of controlled productive
ability. Language Testing, 16 , 33-51.
Lee, C. (2003). The effect of involvement load on English vocabulary acquisition in
an incidental learning situation. Unpublished master’s thesis, National
Tsinghua University, Hsinchu, Taiwan.
Liu, W., Yun, J., Chen, N., Tsao, S., McCormack, S., & Wheeler, N. (Eds.). (2002).
Reading master . Taipei: AMC Publishers.
Long, M. H. (1981). Input, interaction and second language acquisition. In H. Winitz
(Ed.), Native language and foreign language acquisition (pp. 259-278). New
York: New York Academy of Sciences.
Long, M. H. (1988). Instructed interlanguage development. In L. Beebe (Ed.), Issues
in second language acquisition: Multiple perspectives (pp. 115-141). New
York: Newbury House.
Loschky, L. (1994). Comprehensible input and second language acquisition: What is
the relationship? Studies in Second Language Acquisition, 16 , 303-323.
Luppescu, S., & Day, R. R. (1993). Reading, dictionaries, and vocabulary learning.
Language Learning, 43, 263-287.
MacWhinney, B. (1997). Implicit and explicit processes. Studies in Second Language
Acquisition, 19, 277-281.
McLaughlin, B. (1965). “Intentional” and “incidental” learning in human subjects:
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 83/96
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 84/96
74
Postman, L. (1964). Short-term memory and incidental learning. In A. W. Melton
(Ed.), Categories of human learning (pp. 145-201). New York: Academic
Press.
Prince, P. (1996). Second language vocabulary learning: The role of context versus
translations as a function of proficiency. The Modern Language Journal, 80,
478-493.
Qian, D. D. (1999). Assessing the roles of depth and breadth of vocabulary
knowledge in reading comprehension. The Canadian Modern Language
Review, 56 , 282-307.
Read, J., & Chapelle, C. A. (2001). A framework for second language vocabulary
assessment. Language Testing, 18, 1-32.
Robinson, P. (1996). Learning simple and complex second language rules under
implicit, incidental, rule-search, and instructed conditions. Studies in Second
Language Acquisition, 18, 27-67.
Robinson, P. (1997). Individual differences and the fundamental similarity of implicit
and explicit adult second language learning. Language Learning, 47 , 45-99.
Roediger, H. L. (1990). Implicit memory. American Psychologist, 45, 1043-1056.
Schmidt, N. (2000). Vocabulary in language teaching. Cambridge: Cambridge
University Press.
Schmidt, R. (1990). The role of consciousness in second language learning. Applied
Linguistics, 11, 129-158.
Schmidt, R. (1993). Awareness and second language acquisition. Annual Review of
Applied Linguistics, 13, 206-226.
Schmidt, R. (1994). Implicit learning and the cognitive unconscious: Of artificial
grammars and SLA. In N. Ellis (Ed.), Implicit and explicit learning of
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 85/96
75
languages (pp. 165-209). London: Academic Press.
Schmidt, R. (2001). Attention. In P. Robinson (Ed.), Cognition and second language
instruction (pp. 3-32). Cambridge: Cambridge University Press.
Shelton, D., & Newhouse, R. (1981). Incidental learning in a paired-associate task.
Journal of Experimental Education, 50, 36-38.
Singleton, D. (1999). Exploring the second language mental lexicon. Cambridge:
Cambridge University Press.
Stern, H. H. (1992). Issues and options in language teaching. Oxford: Oxford
University Press.
Swain, M. (1985). Communicative competence: Some roles of comprehensible input
and comprehensible output in its development. In S. M. Gass & C. G. Madden
(Eds.), Input in second language acquisition (pp. 235-253). Rowley, MA:
Newbury.
Swain, M. (1995). Three functions of output in second language learning. In G. Cook
& B. Seidlhover (Eds.), Principles and practice in the study of language (pp.
125-144). Oxford: Oxford University Press.
Swanborn, M. S. L., & de Glopper, K. (2002). Impact of reading purpose on
incidental word learning from context. Language Learning, 52, 95-117.
Van Daalen-Kapteijns, M., Elshout-Mohr, M., & de Glopper, K. (2001). Deriving the
meaning of unknown words from multiple contexts. Language Learning, 51,
145-181.
Watanabe, Y. (1997). Input, intake, and retention: Effects of increased processing on
incidental learning of foreign language vocabulary. Studies in Second
Language Acquisition, 19, 287-307.
Wesche, M. B., & Paribakht, T. S. (2000). Reading-based exercises in second
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 86/96
76
language vocabulary learning: An introspective study. The Modern Language
Journal, 84, 196-213.
Williams, J. N. (1999). Memory, attention, and inductive learning. Studies in Second
Language Acquisition, 21, 1-48.
Winitz, H. (1996). Grammaticality judgment as a function of explicit and implicit
instruction in Spanish. The Modern Language Journal, 80, 32-46.
Winter, B., & Reber, A. S. (1994). Implicit learning and the acquisition of natural
languages. In N. Ellis (Ed.), Implicit and explicit learning of languages (pp.
115-145). London: Academic Press.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 87/96
77
APPENDI X A
Reading Text
Keeping A Straight Face
The last time someone was getting on your nerves, did you let them know they
were annoying you, or did you keep a polite—if still hostile—silence? Did you do
your best to hide your feelings in order to avoid a conflict or in the hope that the
person would shut up and go away?
Unfortunately for you if you did, there is some evidence to suggest that you
may have paid a high physical and mental price for keeping a straight face. It is well-
known that the suppression of strong emotions can affect the heart, but there is also a
possibility that it can have a negative effect on the memory.In an experiment not long ago, a group of college students were asked to look
at pictures of badly hurt people. Some of them were asked to maintain calm while
viewing the pictures. Later, all the students were given a surprise memory test, and
the ones asked to hold back their feelings did much worse than the others.
The researchers who did the experiment think that hiding emotions can cause
the brain to redirect attention away from some thought processes and weaken the
ability to recall things. Brain resources being used to control emotions are not free to
aid in other tasks such as thinking clearly and forming memories.
Our determination not to show our feelings means, in a way, that we are
fooling ourselves about our emotions. This kind of behavior is partly because of the
great respect we have for people who are able to keep calm under pressure. A poker
face is seen as a sign of strength and of being in control.
In all likelihood, people whose outer calm hides an inner storm will have a
harder time remembering things. The researchers suggest that we would do better to
consider an unpleasant circumstance as a challenge and look for ways to solve it—
instead of just gritting our teeth and enduring it in silence.
After reading the article, choose the correct answer to each of the following questions.
_____1. Keeping a straight face __________.
(A) is priceless
(B) causes your heart to stop beating
(C) hurts your mind and body
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 88/96
78
(D) is the best way to avoid conflict
_____2. After looking at the pictures of badly hurt people, the students __________.
(A) were too surprised to remember anything
(B) were given a surprise test to find out how much their memory was
affected
(C) were asked to hold back their feelings
(D) did worse than those who didn’t see the pictures
_____3. Hiding emotions will __________.
(A) do harm to the brain
(B) lead to poor memory
(C) assist in clear thinking
(D) lead to undivided attention
_____4. Keeping calm under pressure _________.
(A) makes one look like a fool
(B) is considered foolish behavior
(C) makes one feel high
(D) is highly respected by others
_____5. Which of the following statements is true?
(A) It is certain that people who look calm feel peaceful within.
(B) We can improve our mind by seeing an unpleasant circumstance as a
challenge to test our abilities.
(C) Anyone who wears a poker face will be attacked by a storm.
(D) We can solve our emotional problems by gritting our teeth and enduring
them in silence.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 89/96
79
APPENDIX B
Immediate Posttest
Class:_______ No:_____ Name:__________
Score:__________
Please write down the Chinese translation or English explanation for each of the
following English words and check on the words that you have known before the test.
!
1. annoy ! !
2. hostile ! !
3. conflict ! !
4. unfortunately ! !
5. suppression ! !
6. maintain ! !
7. determination ! !
8. circumstance ! !
9. grit ! !
10. endure ! !
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 90/96
80
APPENDIX C
Delayed Posttest
Class:_______ No:_____ Name:__________
Score:__________
Please write down the Chinese translation or English explanation for each of the
following English words and check on the words that you have known before the test.
!
1. conflict ! !
2. grit ! !
3. circumstance ! !
4. endure ! !
5. annoy ! !
6. unfortunately ! !
7. hostile ! !
8. suppression ! !
9. determination ! !
10. maintain ! !
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 91/96
81
APPENDIX D
Work Sheet for Task 1
Class:_______ No:_____ Name:__________
Keeping A Straight Face
The last time someone was getting on your nerves, did you let them know they
were annoying you, or did you keep a polite—if still hostile—silence? Did you do
your best to hide your feelings in order to avoid a conflict or in the hope that the
person would shut up and go away?
Unfortunately for you if you did, there is some evidence to suggest that you
may have paid a high physical and mental price for keeping a straight face. It is well-
known that the suppression of strong emotions can affect the heart, but there is also apossibility that it can have a negative effect on the memory.
In an experiment not long ago, a group of college students were asked to look
at pictures of badly hurt people. Some of them were asked to maintain calm while
viewing the pictures. Later, all the students were given a surprise memory test, and
the ones asked to hold back their feelings did much worse than the others.
The researchers who did the experiment think that hiding emotions can cause
the brain to redirect attention away from some thought processes and weaken the
ability to recall things. Brain resources being used to control emotions are not free to
aid in other tasks such as thinking clearly and forming memories.
Our determination not to show our feelings means, in a way, that we are
fooling ourselves about our emotions. This kind of behavior is partly because of the
great respect we have for people who are able to keep calm under pressure. A poker
face is seen as a sign of strength and of being in control.
In all likelihood, people whose outer calm hides an inner storm will have a
harder time remembering things. The researchers suggest that we would do better to
consider an unpleasant circumstance as a challenge and look for ways to solve it—
instead of just gritting our teeth and enduring it in silence.
annoy (v.): to cause (someone) trouble;!
hostile (adj.): unfriendly;
conflict (n.): argument;
unfortunately (adv.): by bad luck; suppression (n.): the act of putting down by force;
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 92/96
82
maintain (v.): to keep as before;
determination (n.): a firm decision in the mind;
circumstance (n.): situation;
grit (v.): to cause (as one’s teeth) to rub together;
endure (v.): to bear;
After reading the article, choose the correct answer to each of the following questions.
_____1. Keeping a straight face __________.
(A) is priceless
(B) causes your heart to stop beating
(C) hurts your mind and body
(D) is the best way to avoid conflict
_____2. After looking at the pictures of badly hurt people, the students __________.
(A) were too surprised to remember anything
(B) were given a surprise test to find out how much their memory was
affected
(C) were asked to hold back their feelings
(D) did worse than those who didn’t see the pictures
_____3. Hiding emotions will __________.
(A) do harm to the brain(B) lead to poor memory
(C) assist in clear thinking
(D) lead to undivided attention
_____4. Keeping calm under pressure _________.
(A) makes one look like a fool
(B) is considered foolish behavior
(C) makes one feel high
(D) is highly respected by others
_____5. Which of the following statements is true?
(A) It is certain that people who look calm feel peaceful within.
(B) We can improve our mind by seeing an unpleasant circumstance as a
challenge to test our abilities.
(C) Anyone who wears a poker face will be attacked by a storm.
(D) We can solve our emotional problems by gritting our teeth and enduring
them in silence.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 93/96
83
APPENDIX E
Work Sheet for Task 2
Class:_______ No:_____ Name:__________
Keeping A Straight Face
The last time someone was getting on your nerves, did you let them know they
were __________ you, or did you keep a polite—if still __________—silence? Did
you do your best to hide your feelings in order to avoid a __________ or in the hope
that the person would shut up and go away?
__________ for you if you did, there is some evidence to suggest that you
may have paid a high physical and mental price for keeping a straight face. It is well-
known that the __________ of strong emotions can affect the heart, but there is also apossibility that it can have a negative effect on the memory.
In an experiment not long ago, a group of college students were asked to look
at pictures of badly hurt people. Some of them were asked to __________ calm while
viewing the pictures. Later, all the students were given a surprise memory test, and
the ones asked to hold back their feelings did much worse than the others.
The researchers who did the experiment think that hiding emotions can cause
the brain to redirect attention away from some thought processes and weaken the
ability to recall things. Brain resources being used to control emotions are not free to
aid in other tasks such as thinking clearly and forming memories.
Our __________ not to show our feelings means, in a way, that we are fooling
ourselves about our emotions. This kind of behavior is partly because of the great
respect we have for people who are able to keep calm under pressure. A poker face is
seen as a sign of strength and of being in control.
In all likelihood, people whose outer calm hides an inner storm will have a
harder time remembering things. The researchers suggest that we would do better to
consider an unpleasant _________ as a challenge and look for ways to solve it—
instead of just __________ our teeth and __________ it in silence.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 94/96
84
memorize (v.): to remember;
determination (n.): a firm decision in the mind;
grit (v.): to cause (as one’s teeth) to rub together;
annoy (v.): to cause (someone) trouble;!
harmony (n.): peacefulness;
circumstance (n.): situation;
suppression (n.): the act of putting down by force;
persevering (adj.): showing continuous effort;
conflict (n.): argument;
unfortunately (adv.): by bad luck;
endure (v.): to bear;
maintain (v.): to keep as before;
prejudice (n.): unfair opinion;
hostile (adj.): unfriendly; elaborate (v.): to explain in detail;
After reading the article, choose the correct answer to each of the following questions.
_____1. Keeping a straight face __________.
(A) is priceless
(B) causes your heart to stop beating
(C) hurts your mind and body
(D) is the best way to avoid conflict
_____2. After looking at the pictures of badly hurt people, the students __________.
(A) were too surprised to remember anything
(B) were given a surprise test to find out how much their memory was
affected
(C) were asked to hold back their feelings
(D) did worse than those who didn’t see the pictures
_____3. Hiding emotions will __________.
(A) do harm to the brain
(B) lead to poor memory
(C) assist in clear thinking
(D) lead to undivided attention
_____4. Keeping calm under pressure _________.
(A) makes one look like a fool(B) is considered foolish behavior
(C) makes one feel high
(D) is highly respected by others
_____5. Which of the following statements is true?
(A) It is certain that people who look calm feel peaceful within.
(B) We can improve our mind by seeing an unpleasant circumstance as a
challenge to test our abilities.
(C) Anyone who wears a poker face will be attacked by a storm.
(D) We can solve our emotional problems by gritting our teeth and enduring
them in silence.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 95/96
85
APPENDIX F
Work Sheet for Task 3
Please write a composition about your personal experience when you felt strong
emotions (e.g., anger, happiness, sorrow, etc.).
NOTE: You MUST incorporate the following ten words into the composition in
whatever order you like.
annoy (v.): to cause (someone) trouble;!
Example: To annoy someone with rude behavior.
hostile (adj.): unfriendly;
Example: To treat someone in a hostile manner.
conflict (n.): argument;
Example: To avoid a conflict with one’s best friend.
unfortunately (adv.): by bad luck;
Example: To die in an accident unfortunately.
suppression (n.): the act of putting down by force;
Example: The suppression of strong emotions.
maintain (v.): to keep as before;
Example: To maintain a silence.
determination (n.): a firm decision in the mind;
Example: The determination not to show one’s feelings.
circumstance (n.): situation;
Example: To consider an unpleasant circumstance as a challenge.
grit (v.): to cause (as one’s teeth) to rub together;
Example: To grit one’s teeth and hold on in difficult situations.
endure (v.): to bear;
Example: To endure a strong pain in one’s head.
8/6/2019 Effects of Task-Induced Involvement on Incidental
http://slidepdf.com/reader/full/effects-of-task-induced-involvement-on-incidental 96/96
Class:_______ No:_____ Name:__________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________