language and thinking - utokyo opencoursewarethe results of bloom’s experiments are not replicable...
TRANSCRIPT
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Cognitive Psychology
― Language and Thinking ―
Yohtaro TakanoDepartment of Psychology
Graduate School of Humanities and Sociology
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Cognitive Psychology
Research in Psychology basic researchpractical research
◆ Practical research(clinical psychology, educational psychology,
forensic psychology...)Main goal - to deal with real problems
◆ Basic researchMain goal - to clarify human mental activities
The core of psychology is research in cognitive psychology.
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A Framework of Understanding
Cognitive psychology’s assumption :mental activities =
information processing
Input of information =
perceptionSelection of information =
attention
Storage of information =
memoryRepresentation of information =
concept
Expression of information =
languageProcessing of information =
thought
etc.
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Purposes of Research
To clarify the mechanisms of human information processing
ex.:
Memory・
How do we remember things?
・
Why do we forget things?・
Why is memory distorted?
・
Why are some things easy to forget,・
・
・
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Research Themes Closely Related to Real Life
◆
Why is eyewitness testimony fallible?
◆
Do “subliminal cuts” have any effect?
◆
Do children have a special ability to learn language?
・
・
・
・
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Research Methods in Cognitive Psychology
Main methods - experimentsAdditional methods computer simulation,
measuring brain function,etc.
Cognitive psychology ≠
“process industry”=
“intellectual industry”
Experiments ×
expensive experimental equipment○
PCspaper and pencil
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Takano’s Research Themes
1.
Visual perception
2.
Memory
3.
Visual imagery
4
Language and thought
5
Form cognition
6.
Inference
7
Culture
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English Issues
◆ Discussion on English as an official language(ex. Yoichi Funabashi)
◆ A proposal to adopt English as the national language(ex. Arinori Mori)
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Criticism of the Japanese Language
◆
English -
logical
◆
Japanese -
illogicalex.:
omission of subjects,equivocal expressions,
etc.∴
Using Japanese
prevents speakers fromthinking theoretically
(The linguistic relativity hypothesis)
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The Linguistic Relativity Hypothesis
(The Sapir-Whorf Hypothesis)Language =
means of communicationmeans of thinking
The strong hypothesis:
language =
thought
The weak hypothesis:
language ⇒
thought
∴
A difference in language ⇒a difference in thinking
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Whorf’s Example (1)
“Snow”
◆
English:
one word (snow)
◆
Eskimo:
many words fluttering snow,
melting snow,dry snow,etc.
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Whorf’s Example (2)
The Hopi Indian language
“Flying things”(except birds)=
insects,airplanes,aviators,etc.
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Whorf’s argument : Problems
Differences in language: The evidence was presented
Differences in thought:The evidence was not presented
∴
Subsequent studies ―Consider differences in thought patterns.
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Research on ColorsLanguageThought
Basic color terms English:
11 wordsthe Dani language:
2 words
(light/ dark)Hypothesis:
The Dani are inferior to Americans in
color perception.
Psychologists’ research findingsIn their ability to distinguish colors: Americans = The Dani
= basic color terms= color perception
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Daily Experience
“Peach” ≠
a basic color termHowever, we can distinguish “red” and “peach”
different tones of “peach”∴
Test results on Dani people concur.
But..., color perception =
thought ?Color perception:
genetically determined
∴
The possibility that it is affected bylanguage is small.
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Bloom’s Hypothesis
「思考らしい思考」:
language ⇒
thought ?
Alfred H. Bloom:
a psychologist and linguist at Swarthmore College
“The Linguistic Shaping of Thought” (1981)
English vs. ChineseJapanese
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Differences in Language
Linguistic devices 1.Counterfactualconditionals
2.Hypostatization
English ― ○
Chinese, Japanese ― ×
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Counterfactual Conditionals
Subjective pastSubjective past perfect
ex.:
If John had gone to the library,
he would have seen Mary.
=
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Hypostatization
= Nominalization
That measure will be approved by Congress.
may be quicker than expected.The approval of that measure by Congress
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Differences in Thinking
Counterfactual conditionalsHypostatization
=
expressions of abstract & scientificthought
Americans :
linguistic training ― ○
Chinese, Japanese: 〃 ―
∴
Ability for abstract & scientific thinking:
Americans >
Chinese, Japanese
×
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Bloom’s Experiments
Presenting paragraphs ⇒
multiple-choice questions
◆
Five experiments: comparing American college students
Chinese college students
◆
One experiment: comparing American college students
Japanese college students
Results (percentage of correct answers):
Americans >
Chinese, Japanese
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Arguments
◆
Criticism from Chinese psychologists (Au, Liu):
The results of Bloom’s experiments arenot replicable
◆
Bloom’s counterarguments
:
Difference in linguistic materials
English ability of the subjects failed to replicate
Cf.
MacNeill (trans. by Katori, Hiroto, et al.)
『心理言語学 (Psycholinguistics)』 (Saiensu-sha)
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Points of the Arguments
Extraneous variables ―
uncontrolled
∴
Interpretation of the experimentalresults ―
unclear
Extraneous variables=
variables that can affect effect variables (the
percentage of correct answers) in addition to cause variables (language)
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Confounding Extraneous Variables
Cause Effect Extraneous variables?
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Extraneous Variables
Americans ≠
only languageChinese, Japanese =
many other things
[Assumption]General mental ability:
American subjects >Chinese subjects
[Results]The score: 〃 > 〃
Differences between
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Control ConditionsControl conditions control of extraneous variables
[Methods]
experimental conditions:counterfactual conditions ― ○
control conditions: 〃 ― ×
[Results]
experimental conditions:
Americans >
Chinese
control conditions: 〃 = 〃
proving Bloom’s hypothesis
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Lack of Control Conditions
Bloom’s experimentsAu’s experiments lacked control conditionsLiu’s experiments
∴
certain conclusions ―
impossible
Only one of Bloom’s experiments has a control condition.
=
an experiment in hypostatization
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Experiments in Hypostatization
Read the following paragraph and the question based on it. Choose the best answer from the four alternatives below and write your answer in the blank.
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Paragraph 1A recent report on pollution stated: Living in a polluted environment can cause lung disease; but living in a polluted, comparatively high altitude location increases the danger and, conversely, living in a polluted, low altitude location decreases it. Oddly enough, however, living in a polluted high altitude location and eating a lot of fatty foods turns out to be just like living in a polluted, low altitude location.
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AlternativesQ:
According to the above report, which of the
circumstances below would be likely to be the most harmful to your health?
A.A polluted, low altitude location, and eating a lot of fatty foods.
B.A polluted, relatively high altitude location, and eating a lot of fatty foods.
C.A polluted, relatively high altitude location, and eating very little fatty foods.
D.Crazy question.
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Paragraph 2
A recent report on pollution stated: There exists a relationship between living in a polluted environment and getting lung disease; at comparatively high altitudes the relationship is stronger and at comparatively low altitudes it is weaker. Oddly enough, moreover, at comparatively high altitudes, eating more fatty foods renders the relationship between living in a polluted environment and getting lung disease equivalent to that existing in low altitude locations.
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Bloom’s assumption
Paragraph 1Paragraph 2
The content is the same.
Only the degree of hypostatization is different.
Paragraph 1:the degree of hypostatization ― small
Paragraph 2:the degree of hypostatization ― large
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A Comparison between Paragraph 1 and 2 (e.g.)
[Paragraph 1]Living in a polluted environment can cause lung disease; but living in a polluted, comparatively high altitude location increases the danger and, conversely living in a polluted, low altitude location decreases it.
[Paragraph 2]There exists a relationship between living in a polluted environment and getting lung disease; at comparatively high altitudes the relationship is stronger and at comparatively low altitudes it is weaker.
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The Structure of the Experiment
Paragraph 1:
the degree of hypostatization ―small
Paragraph 2:
the degree of hypostatization ― large
(= the control condition)
(= the experimental condition)
Prediction paragraph 1:
Americans =
Chinese
paragraph 2:
Americans >
Chinese
Result =
Prediction
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Bloom’s Results
(Bloom, 1981)Paragraph 1 Paragraph 2
Rat
e of
Acc
urac
yAmerican
Chinese
Levels of Counterfactual inference
HighLow
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Interpretation of the Experimental Results
Do experiments in hypostatizationproving Bloom’s hypothesis?
The problem = a methodological flaw
The difference in the experimental condition ≠ the degree of hypostatizationthe control condition
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The Functional Relationship of Paragraph 1
肺の病気
汚染
脂っこい食物
高地
低地
汚染
脂っこい食物
低地
高地
Answer = C (A polluted, relatively high altitude location, and eating very little fatty foods)
Lung
dis
ease
pollution pollution
low altitude locations
fatty foodsfatty foods
high altitude locations
low altitude locations
high altitude locations
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The Functional Relationship of Paragraph 2
There exists a relationship between living in a polluted environment and getting lung disease; at comparatively high altitudes the relationship is stronger and at comparatively low altitudes, it is weaker.
“Relationship” =
the slope of function +-
“The relationship is strong”=
function’s slope is steep
intercept is high
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The Functional Relationship of
Paragraph 2Lung
dis
ease
high: high altitude locations
low: low altitude locations
low
high high
high
high
high
high
low
low
low
lowlow
pollution
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The Functional Relationship of Paragraph 2-(1)
肺の病気
汚染
高地
低地Answer: C
Lung
dis
ease
high altitude locations
low altitude locations
pollution
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Answer:C
The Functional Relationship of Paragraph 2-(2)
high altitude locations
high altitude locations
low altitude locations
low altitude locations
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The Functional Relationship of Paragraph 2-(3)
Answer:A
(?)
B
Answer:A
(?)
B
Answer:
depends on the
degree of pollution
low altitude locations
low altitude locations
low altitude locations
high altitude
locations
high altitude
locations
high altitude locations
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Question
A methodological flawParagraph 1(the control condition):
Answer = C
Paragraph 2 (the experimental condition):
Answer= D (?)
Question:
Why does the flaw influence the outcome?
○
Chinese subjects
×
American subjects?
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Replication
◆
American subjects=
Cornell UniversityStudents of “Cultural Psychology”
◆
Japanese subjects=
the University of Tokyo (Komaba Campus)Students of “Psychology” (2 classes)
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Results of the Replication
(Bloom, 1981)
Replication:
basically successful
Paragraph 1 Paragraph 2
Rat
e of
Acc
urac
y
American
Japanese
American
Chinese
Levels of Counterfactual inference
Levels of Counterfactual inference
Low
Low
High
High
Rat
e of
Acc
urac
y
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Results of Japanese Students:
Humanities and Sciences
(Takano, Cognition, 1989)Paragraph 1 Paragraph 2
Rat
e of
Acc
urac
y
Humanities
Sciences
Levels of Counterfactual inference
Low High
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Hypothesis
An extraneous variable =
Knowledge of function
◆
Humanities students:
little knowledge of function
Paragraph 2 ―
interpreted with a common functional relation∴
they chose “C”
⇒ a high percentage gave the correct answer
肺の病気
汚染
高地
低地
Lung
dis
ease
pollution
high
low
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Hypothesis
An extraneous variable =
Knowledge of function
◆
Science students:
good knowledge of function
Paragraph 2 ―
gave thought to various functional relations∴
Many of the subjectschose “D”
⇒ a low percentage gavethe correct answer 低地
高地
low
high
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Corroboration
1)
American subjects in the replication =
humanities
2)
American subjects in Bloom’s experiment =
humanities(students in psycholinguistics)
3)
Chinese subjects in Bloom’s experiment=humanities + sciences
4)
The percentage of correct answers to paragraph 1:sciences >
humanities
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Results of Japanese Students: Humanities and Sciences
(Takano, Cognition, 1989)Paragraph 1 Paragraph 2
Rat
e of
Acc
urac
y
Humanities
Sciences
Levels of Counterfactual inference
Low High
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Prediction
If the hypothesis is correct
for American students as well,the percentage of correct
answers to paragraph 2humanities ―
high
sciences ―
low
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The Verification Experiment
Subjects =
undergraduates at CornellUniversity
Humanities =
students of “CulturalPsychology” (already mentioned)
Sciences =
students in the Departmentof Physics (have studied calculus)
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Experimental Results in America
文科系
(The results of Japanese students)
(Takano, Cognition, 1989)
Takano’s hypothesis – supportedParagraph 1 Paragraph 2
Sciences
Sciences
Humanities
Humanities
Rat
e of
Acc
urac
y
Rat
e of
Acc
urac
y
Levels of Counterfactual inference
Low High
Low HighLevels of Counterfactual inference
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A Common Question
“Eating a lot of fatty foods”is harmful to one’s health
∴
alternative A,B,C ≠
correct
∴
the correct answer =
alternative D(
“Crazy question.”)
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The Answer“Fatty foods” can be harmful to one’s health
―
Everyone knows this∴
it affects all subjects equally
Americans∴
Chinese, Japanese
humanitiessciences
The differences between cannot be
explained
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Experimental Results: Conclusions
The difference between AmericansChinese, Japanese
found in Bloom’s Paragraph 2
observed among Japanese as wellamong Americans
∴
The difference in performance cannot be attributed to the difference in native language.
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Conclusions
2)
Experiments inhypostatization
4)The Japanese language
1)
Experiments in hypostatization
Difference in language
Difference in familiarity with functionswere confounded
Proving Bloom’s hypothesis
3)
Bloom’s other experiments ―
uninterpretable
(∵
the lack of control conditions)
lower ability in abstract scientific thinking
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The Linguistic Relativity Hypothesis :
Review
The influence of language on thought (verified)
○
Minor influenceex.:
Basic color terms help improve
memory for ambiguous colors by a few percent.Major influence
ex.:
People who speak different languages cannot understand each other.
ex.:
Speakers of a certain language have lower thinking ability.
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Serendipity
Serendipity=
Accidental discoveries in science
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Serendipity: Ex.1
Koichi Tanaka (The Nobel Prize in Chemistry, 2002):
Ionization of protein molecules
“...I tested both specimens, but neither of them, with high molecular weight, ionized individually. Then I mixed the specimens by accident. Thinking that it was a waste to just throw it away, I measured the mixture and found that it was ionized.”
(The Asahi Shimbun October 11, 2002)
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Serendipity: Ex.2
Hideki Shirakawa (The Nobel Prize in Chemistry, 2000):
The discovery of conductive polymers
Dr. Kazuo Akagi of University of Tsukuba, who collaborated on research with Dr. Shirakawa, says, “a thousand times too much catalyst was added by mistake, and the result of this error took the form of a film.” Dr. Shirakawa observed that the film had metallic luster, and that was the starting point for this research.
(The Asahi Shimbun October 11, 2000)