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Long-Term Impact ofPrevention Programs toPromote Effective Parenting:Lasting Effects but UncertainProcessesIrwin N. Sandler, Erin N. Schoenfelder,Sharlene A. Wolchik, and David P. MacKinnonPrevention Research Center, Arizona State University, Tempe, Arizona 85287-6005;email: [email protected]
Annu. Rev. Psychol. 2011. 62:299–329
First published online as a Review in Advance onSeptember 7, 2010
The Annual Review of Psychology is online atpsych.annualreviews.org
This article’s doi:10.1146/annurev.psych.121208.131619
Copyright c© 2011 by Annual Reviews.All rights reserved
0066-4308/11/0110-0299$20.00
Key Words
parenting, prevention, promotion, mediation, long-term effects
Abstract
This article reviews findings from 46 randomized experimental trials ofpreventive parenting interventions. The findings of these trials provideevidence of effects to prevent a wide range of problem outcomes andto promote competencies from one to 20 years later. However, thereis a paucity of evidence concerning the processes that account for pro-gram effects. Three alternative pathways are proposed as a frameworkfor future research on the long-term effects of preventive parentingprograms: (a) through program effects on parenting skills, perceptionsof parental efficacy, and reduction in barriers to effective parenting;(b) through program-induced reductions in short-term problems ofyouth that persist over time, improvements in youth adaptation to stress,and improvements in youth belief systems concerning the self and theirrelationships with others; and (c) through effects on contexts in whichyouth become involved and on youth-environment transactions.
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Contents
INTRODUCTION. . . . . . . . . . . . . . 300DEFINING KEY
CONSTRUCTS . . . . . . . . . . . . . . 302Parenting Interventions . . . . . . . . 302Effective Parenting . . . . . . . . . . . . 302Youth Outcomes . . . . . . . . . . . . . . 302
CONCEPTUAL FRAMEWORKOF THE PROCESSES THATACCOUNT FOR THELONG-TERM EFFECTS OFPARENTINGINTERVENTIONS . . . . . . . . . . 302Proposition 1:
Intervention-InducedImprovements in Parentingare Causally Related to theDevelopment of YouthCompetencies and ProblemOutcomes . . . . . . . . . . . . . . . . . . 303
Proposition 2: The Long-TermEffects ofIntervention-InducedChanges in Parenting areDue to Changes in Social,Cognitive, Behavioral, andBiological Processes inParents and Youth and in theTransactions Between Youthand Their Social Contexts . . 303
Changes in Parents . . . . . . . . . . . . 303Changes in Youth . . . . . . . . . . . . . 304Changes in Youth-Environment
Transactions . . . . . . . . . . . . . . . 305REVIEW OF EXPERIMENTAL
TRIALS OF PROGRAMS TO
PROMOTE EFFECTIVEPARENTING . . . . . . . . . . . . . . . . 305Infancy and Toddlerhood . . . . . . 306Early Childhood . . . . . . . . . . . . . . 308Middle Childhood. . . . . . . . . . . . . 310Adolescence . . . . . . . . . . . . . . . . . . . 311Resilience Promotion Programs
for Youth in StressfulSituations . . . . . . . . . . . . . . . . . . 312
Summary . . . . . . . . . . . . . . . . . . . . . 313INTEGRATING
THEORETICALPROPOSITIONS ABOUTTHE LONG-TERMEFFECTS OF PARENTINGINTERVENTIONS INTOTHE ANALYSIS OFPREVENTION TRIALS . . . . . 314Proposition 1: The Long-Term
Effects of ParentingInterventions are Due toProgram Effects to ImproveParenting . . . . . . . . . . . . . . . . . . 314
Proposition 2: The Long-TermEffects ofIntervention-InducedChanges in Parenting areDue to Changes in Social,Cognitive, Behavioral, andBiological Processes inParents and Youth and in theTransactions Between Youthand Their Social Contexts . . 321
FINAL SUMMARY. . . . . . . . . . . . . . 322
INTRODUCTION
This review addresses two issues concerning theeffects of preventive parenting programs. Whatare the long-term effects of such programson child outcomes? What processes accountfor these long-term effects? The review goes
beyond prior reviews of the efficacy of parent-ing interventions (Kaminski et al. 2008, Taylor& Biglan 1998) in three ways. First, it focusesexclusively on long-term outcomes, defined asthose assessed one year or longer after the pro-gram. Second, it focuses on a broad array of out-comes across developmental periods, including
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promoting competencies as well as preventingproblem outcomes. Third, because of the focuson prevention and health promotion, the reviewonly includes programs for families of youthwho were not selected on the basis of experi-encing clinical levels of problems at programentry. This review does not provide a quantita-tive summary of the effect sizes of interventions.Rather, it describes the range of parenting in-terventions that have been employed across de-velopmental levels, provides a summary of theresearch on long-term program effects and ofmediating processes that account for programeffects, and provides a conceptual framework toguide future research on alternative pathwaysthat may mediate long-term effects of preven-tive parenting programs.
The review addresses a critical but some-what neglected question: What are the path-ways by which parenting interventions bringabout long-term change in youth outcomes?Understanding the pathways through whichparenting programs have long-term effectsdraws on theory from normal development anddevelopmental psychopathology and has impli-cations both for advancing theory and for en-hancing the long-term effects of future pro-grams. Prevention scientists and developmentalresearchers have recognized the scientific op-portunity of integrating theoretical and inter-vention research (Cicchetti & Hinshaw 2002,Rutter et al. 2001). For example, Cicchetti &Hinshaw (2002) proposed that “preventive in-tervention research can be conceptualized astrue experiments in modifying the course of de-velopment, thereby providing insights into theetiology and pathogenesis of disordered out-comes” (pp. 667–668). Similarly, Collins et al.(2000) articulated research designs that addressrecent critiques of the causal effect of parentingon child socialization, particularly as comparedwith the alternative causal explanations, suchas genetic or peer influences. They proposedthat studies that demonstrated that a programled to a change in parenting, which in turn wasassociated with a subsequent change in youth
outcomes, provide particularly strong evidencefor the causal effect of parenting.
Preventive intervention researchers have ina complementary fashion proposed that well-specified theoretical models of developmentalprocesses provide the foundation on which ef-fective preventive interventions are built (Coieet al. 1993, Mrazek & Haggerty 1994). In theprevention research cycle (Mrazek & Haggerty1994), a “small theory” is specified concerningthe putative mediating processes that lead to theproblems to be prevented, and a preventive in-tervention is designed to change these putativemediators and thus prevent the problems. A re-cent report on prevention from the NationalResearch Council and Institute of Medicine(NRC/IOM 2009) extended this model tomental health promotion in which theoreticalmodels about the development of competen-cies “inform the development of interventionsto promote mental, emotional and behavioralhealth” (p. 110). Randomized prevention trialsprovide experimental tests of whether chang-ing these processes accounts for reductions inproblem outcomes and increases in competen-cies, and this knowledge in turn should leadto the design of more effective and efficientinterventions.
Below, we define some key constructsused in the review and present a conceptualframework of alternative theoretical pathwaysthrough which parenting interventions mightlead to long-term effects on youth outcomes.We then review findings of the effects ofrandomized experimental trials with a mini-mum of one-year follow-up. The studies arediscussed by developmental level during whichthe intervention was delivered. Studies thatfocus on families in stressful situations andinclude youth in more than one developmentallevel are discussed in the final section. Wethen discuss those studies that formally testparenting as a mediator of program effectson long-term outcomes. Finally, using ourconceptual framework, we describe directionsfor future research.
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DEFINING KEY CONSTRUCTS
Parenting Interventions
We define parenting interventions as thosein which at least one component of theintervention involved activities designed topromote some aspect of effective parenting.Because most problem outcomes are associatedwith multiple risk and protective factors,many interventions that included a parentingcomponent also included one or more othercomponents designed to change other potentialmediators (e.g., children’s coping skills) or toreduce barriers to using effective parenting(e.g., parental depression, economic strain).
Effective Parenting
We define parenting to include a broad rangeof functions that parents engage in to promotetheir offspring’s accomplishment of culturallyand age-appropriate developmental tasks andto reduce problem behaviors. These functionsinclude having a positive affective relationshipwith the child, providing advice and informa-tion, being aware of the youth’s activities and in-teractions, supporting behaviors that promoteeffective adaptation (e.g., homework), and dis-couraging behaviors that hinder positive adap-tation (e.g., association with deviant peers). Ef-fective parent-child relationships are most oftencharacterized as ones that include high levelsof nurturance, use of effective control strate-gies, and support of children in accomplishingnormative developmental tasks (e.g., Bornstein2002, Collins et al. 2002). However, there aredifferences across researchers about which as-pect of parenting is most responsible for af-fecting youth developmental outcomes, withsome researchers emphasizing attachment andself-regulatory capabilities (Dozier et al. 2002),some emphasizing positive exchanges (Zisser &Eyberg 2010), and others emphasizing a coer-cive reinforcement cycle (Patterson & Fisher2002).
Given that the critical developmental taskschange over time, the content of effective
parenting differs across development. Further,effective parenting involves facilitating chil-dren’s ability to meet the demands of social con-texts beyond the family, including the schooland peer environments, and to avoid poten-tially dangerous and high-risk situations, so thatthe characteristics of effective parenting andthe difficulty of being an effective parent differacross the social contexts in which families live(e.g., Mason et al. 1996). The effects of parent-ing may also differ as a function of biologicaldifferences in children, including genetic riskfor development of problem outcomes (e.g.,Edwards et al. 2010, Kaufman et al. 2004, Kim-Cohen et al. 2006).
Youth Outcomes
We use the term “problem outcomes” to referto the problems that have been targeted by pre-vention programs such as mental health prob-lems, substance use and abuse, high-risk sex-ual behavior, and delinquency. There is also agrowing focus on promotion interventions de-signed to increase positive outcomes. A recentreport on the state of prevention research de-fined mental health promotion as “efforts toenhance individuals’ ability to achieve devel-opmentally appropriate tasks (developmentalcompetence), increase a sense of self-esteem,mastery, well-being, and social inclusion, andstrengthen their ability to cope with adversity”(p. 74). We use the term “competencies” to re-fer to the positive outcomes targeted by pro-motion programs.
CONCEPTUAL FRAMEWORKOF THE PROCESSES THATACCOUNT FOR THELONG-TERM EFFECTS OFPARENTING INTERVENTIONS
Our conceptualization of the processes thatmight account for the long-term effects of par-enting interventions is guided by two com-plementary propositions. The first is thatintervention-induced improvements in parent-ing are causally related to youth competencies
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and problem outcomes. The second is that thelong-term effects of program-induced changesin parenting are due to social, cognitive, behav-ioral, and biological processes that occur in par-ents and youth and in the transactions betweenyouth and their social contexts.
Proposition 1: Intervention-InducedImprovements in Parenting areCausally Related to the Developmentof Youth Competencies and ProblemOutcomes
Similar to other researchers, we use the term“cause” (e.g., Kraemer et al. 1997) to denotethat experimentally induced changes in par-enting lead to improvements in youth out-comes. This is the central hypothesis of the“small theory” that underlies parenting inter-ventions. However, as noted above, researchershave challenged inferences concerning causalrelations between parenting and youth out-comes that are based on correlational stud-ies and have proposed randomized interventiontrials as a way to disentangle the effects of par-enting from alternative explanations (Collinset al. 2000, Rutter et al. 2001). Several stepshave been proposed in the design of these trials(Patterson & Fisher 2002). First, the theoreticalprocesses should be specified a priori in whichthe intervention effects on youth outcomes aremediated through their effects on parenting.Second, both parenting and youth outcomesshould be measured with reliable and valid mea-sures that are sensitive to change. Third, the in-tervention should improve both parenting andthe youth outcomes. Fourth, experimentally in-duced changes in parenting must be shown tomediate (or account for) the changes in youthoutcomes. Although there are limitations onthe causal mediation inferences that can bedrawn based on the findings of randomized tri-als (MacKinnon 2008), these trials have the dis-tinct methodological advantage of ruling outrival explanations such as shared pre-existingthird variables including genetic factors.
Proposition 2: The Long-TermEffects of Intervention-InducedChanges in Parenting are Due toChanges in Social, Cognitive,Behavioral, and Biological Processesin Parents and Youth and in theTransactions Between Youth andTheir Social Contexts
Although mediational analyses provide evi-dence that changes in parenting are involved inimproving youth outcomes, they do not identifythe processes through which parenting inter-ventions affect child outcomes over time. Theo-retically, these processes may involve program-induced changes within parents and youth andin the transactions between youth and theirenvironment (see Figure 1), and research isneeded to test which of these alternative path-ways account for intervention effects.
Changes in Parents
The most parsimonious change in parents thatmay account for long-term effects of parent-ing programs is that parents learned new skillsthrough participating in the program and theuse of these skills is maintained by positive re-sponses from children. A second, related changein parents that may maintain positive parentingand lead to improvements in youth outcomesover time involves parenting self-efficacy. Par-enting self-efficacy refers to parents’ beliefsin their ability to influence their children inways that foster their development and success(Ardelt & Eccles 2001). Theoretically, a highersense of parental self-efficacy leads parents tobe more persistent in the use of parenting skillsthat are associated with desirable outcomes. Al-though the causal nature of the relations be-tween parental self-efficacy and parenting be-haviors is not established, several researchershave found that higher levels of parental self-efficacy are associated with more effective par-enting and lower child mental health problems(e.g., Jones & Prinz 2005). It is also possiblethat reduction of barriers to effective parenting,
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Short-term changes
Use of paren�ng skills
Paren�ng self-efficacy
Reduce barriers to effec�ve paren�ng
a. Parent model
Program
Long-term changes
Problemoutcomes
Developmentalcompetencies
b. Youth model Short-term changes
Long-term changes
Reduced problem behaviors
Strengthened Program Paren�ng
Problemoutcomes
Reduced problem behaviors
Strengthened
Use of paren�ng skills
Paren�ng self-efficacy
Reduce barriers to effec�ve paren�ng
gability to adapt to stress
Changes in belief systems
Program Paren�ngchanges
Developmentalcompetencies
Strengthened ability to adapt to stress
Changes in belief systems
c. Youth-environment transac�ons model
Short-term changes
Long-term changes
Youth ac�ons on environment
Environment reac�ons to youth
Youth selec�on of environment
Paren�ngchanges
Problemoutcomes
Developmentalcompetencies
Youth ac�ons on environment
Environment reac�ons to youth
Youth selec�on of environment
Program
Figure 1Alternative conceptual models of processes by which parenting affects long-term program impact on childcompetencies and problems.
[e.g., parental depression (e.g., Brennan et al.2003)] enables parents to implement and main-tain the skills they learned in the programs.
Changes in Youth
One explanation for the long-term effects ofparenting programs on youth outcomes isthat improvements in parenting cause short-term changes in youth problem behavior, andthese changes persist over time. For exam-
ple, externalizing problems are stable fromearly childhood to adolescence (Loeber & Hay1997), thus, intervention-induced reductionsin externalizing problems that occur at earlystages of development are maintained later indevelopment.
Program-induced changes in parenting mayalso affect youth’s cognitive, biological, or af-fective processes involved in adapting to stress.For example, there is considerable research
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indicating that parental support and consis-tent discipline are associated with children’semotion-regulation skills, such as active cop-ing, social support seeking, attentional con-trol, and cognitive reappraisal (Eisenberg et al.2010), which in turn are related to mental healthand physical health outcomes in childhood(Eisenberg et al. 2010) and adulthood (Lueckenet al. 2009). Biological processes underlyingemotion regulation, such as hypothalamic-pituitary-adrenal (HPA) axis functioning, alsomay be affected by parenting and influence thedevelopment of youth internalizing and exter-nalizing problems (Blair et al. 2008).
Changes in parenting may also lead to im-proved youth outcomes through their effectson youth belief systems, such as beliefs in self-worth, control beliefs, and beliefs concern-ing the parent-child relationship. For exam-ple, parental warmth and contingent responsesto youth are related to youth beliefs in theirability to control their environment (Bandura1997). Beliefs about the parent-child relation-ship may be particularly important in explain-ing the long-term effects of parenting inter-ventions. Rosenberg & McCullough (1981)defined the construct of “mattering” as the be-lief that one is noticed, is an object of concern,and is needed by significant others. Researchhas demonstrated that children’s belief thatthey matter to their parents is related to theirinternalizing and externalizing problems (e.g.,Schenck et al. 2009). The related construct offear of abandonment refers to children’s beliefsthat their parents may not want to or be ableto take care of them in the future. Researchhas found that fear of abandonment mediatesthe relation between mother-child relationshipquality and children’s internalizing and exter-nalizing problems (Wolchik et al. 2002a) in asample of children following parental divorce.
Changes in Youth-EnvironmentTransactions
Parenting interventions may lead to long-termeffects on youth outcomes by influencing theenvironmental contexts in which youth become
involved or youth transactions within thesecontexts. Caspi et al. (1989) used the concept ofinteractional continuity to refer to the processin which parenting affects child behaviorsduring one developmental period, these behav-iors in turn affect the responses the childrenreceive from others in different social contexts,(e.g., schools and peer groups), and theseresponses maintain the changes in behavior.For example, parenting involving ineffectivecontingencies for child noncompliance canlead to increases in the child’s aggressive andnoncompliant behavior, which in turn leads tomore aversive behavior on the part of the parent(Patterson & Fisher 2002). Children who areaggressive and noncompliant may experiencerejection by peers and teachers in the schoolcontext, leading them do more poorly in thiscontext (Patterson & Fisher 2002). Similarly,Masten et al. (2005) referred to “cascadingpathways,” in which change in one area of func-tioning triggers a progression of consequencesthat can have extensive effects on other areasof adaptation in later developmental periods.
The concept of “cumulative continuity”(Caspi et al. 1989) refers to the process by whichyouth select into contexts that reinforce theirbehavior. Kaplan (1983) proposed that adoles-cents who are devalued in groups that hold con-ventional values find esteem and value in theirrelationships in deviant groups and engage inantisocial behavior or drug use behaviors thatare valued by these groups. Longitudinal re-search has shown that adolescents with conductdisorder or depression as compared to thosewho do not have such problems are likely tospend less time in conventional contexts andhave greater exposure to contexts that maintaintheir problem behaviors into young adulthood(e.g., Bardone et al. 1996).
REVIEW OF EXPERIMENTALTRIALS OF PROGRAMS TOPROMOTE EFFECTIVEPARENTING
We identified 46 randomized experimental tri-als of parenting interventions that met the
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following three criteria: (a) Participants wererandomly assigned to a program that includedan intervention component to promote effec-tive parenting versus a comparison condition;(b) there was a minimum of one year follow-upduring which there was no intervention; and(c) the trial could be considered a universal, se-lective, or indicated prevention or promotionintervention (NRC/IOM 2009).
Many of these programs focused onhelping parents to facilitate their offspring’saccomplishment of developmental tasks. Thus,we organize our review by developmentalperiod: infancy and toddlerhood (0–3), earlychildhood (4–7), middle childhood (8–12),and adolescence (13–18). Several programsthat focused primarily on helping families dealwith stressful situations and targeted childrenacross developmental periods are describedseparately. In each section, we first describe therole of effective parenting in promoting accom-plishment of the tasks for healthy adaptation.We then describe the interventions, includingthe population that was targeted, the goals andobjectives of the interventions, the programcomponents, and the formats used in theinterventions. We then summarize the findingsconcerning outcomes achieved by the inter-ventions, with an emphasis on long-term youthoutcomes. Finally, we more fully describe oneintervention and its long-term impact.
Infancy and Toddlerhood
Interventions that target parenting during theprenatal period, infancy, or toddlerhood teachparents to support their infant in achieving thedevelopmental tasks of healthy physical devel-opment, early cognitive development, and be-havior and emotional regulation. The first threeyears of life are a time of great physical growthand development, and during this time, par-ents play a key role in providing appropriatecare and nutrition and ensuring their infant’ssafety. Abuse, neglect, and accidents are lead-ing causes of death for infants and toddlers (U.S.Dept. Health Human Serv. Children’s Bureau2009), making parent education about basic
child-care tasks, developmental milestones, andways to create a safe home environment cru-cial to promoting healthy development. Infancyand toddlerhood are also marked by the devel-opment of functional language, cognitive skillssuch as representational thinking, and basicself-regulation skills such as following rules, fo-cusing attention, and appropriately expressingemotion (NRC/IOM 2000). The developmentof each of these skills is facilitated by parentalbehaviors, including engaging in warm and sup-portive social interactions, cognitively stimu-lating the infant, and supporting the infant’sunderstanding of their environment (Bornstein2002).
The 13 experimental trials that met our cri-teria involved mothers who were pregnant orparents whose offspring were 3 years old oryounger. The majority of programs targetedfamilies who were low income or were experi-encing another risk factor, such as being a singleteenage mother (e.g., Olds et al. 2004b). Halfof the programs included primarily ethnic mi-nority families (e.g., Olds et al. 2004a). Morethan half of the interventions included a com-ponent consisting of home visitation by nursesor professionals (e.g., Brooks-Gunn et al. 1994),with a majority of these interventions beginningin pregnancy. Other formats included mul-tilevel interventions with self-directed com-ponents, individual family appointments withpractitioners, and parenting groups. Most ofthese programs were designed to educate par-ents about child development and to teach par-enting behaviors that promote healthy devel-opment and home safety. One-third of theprograms also included child-based compo-nents, such as educationally enriched daycareor socioemotional training. Comparison condi-tions were typically no-intervention conditions,brief (one- to three-session) interventions, orscreening and referring families to communityresources.
Three-quarters of the studies reportedimprovements in parenting skills within oneyear after the intervention ended, includingincreases in positive parenting and respon-siveness (Sanders et al. 2000), reductions in
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coercive or corporal discipline, increases ineffective discipline (Gross et al. 2003), in-creases in the safety of the home environment(Kitzman et al. 1997, Olds et al. 1994a) andreductions in the incidence of child abuse andneglect (Kitzman et al. 1997; Olds et al. 1994a,2004b), Researchers also reported programeffects on factors that might influence positiveparenting, including increases in parentingself-efficacy, parenting satisfaction, positiveaffect (Gross et al. 2003, Plant & Sanders2007), parenting competence (Sanders et al.2000), and reductions in parenting stress(Cowan et al. 2007) and interparental conflictor domestic violence (Olds 2002, Sanders et al.2000). Approximately one-third of the studiesreported long-term program effects on par-enting, including increased father involvement18 months later (Cowan et al. 2009), higher lev-els of maternal sensitivity two years later (Oldset al. 2004b), and parenting competence andpositive affect three years later (Sanders et al.2007), as well as reduced rates of child abusebetween two and thirteen years later (Olds et al.2007). In addition, studies reported long-termeffects on factors that affect parenting, such asfewer subsequent pregnancies, higher maternalemployment, less maternal involvement withthe law, longer romantic relationships (Oldset al. 1997, 2007), and improvements inparental adjustment (Sanders et al. 2007).
A majority of the studies reported programeffects to reduce child behavior problems be-tween one and two years after the interven-tion ended (e.g., Gross et al. 2003, Sanderset al. 2000). Other effects included fewer childinjuries or ingestions of hazardous substances(Koniak-Griffin et al. 2003), improved cog-nitive and emotional behaviors ( Johnson &Breckenridge 1982), higher executive function-ing (as evidenced by the ability to sustain at-tention, inhibit motor control, and display lessoverly sensitive emotional behavior), more ad-vanced language skills, and greater social com-petence (Olds et al. 2004a,b) for those in theintervention versus control condition. Severalfollow-ups in early childhood found programeffects to improve child behavior at home and in
the classroom one year later (Gross et al. 2003,Plant & Sanders 2007) and to reduce the in-cidence of diagnosis of externalizing disorders(Gross et al. 2009; Sanders et al. 2000, 2007).Two studies that followed their samples frominfancy to adolescence found reduced risk be-haviors, such as involvement in the legal systemand risky sexual behavior (Olds et al. 1997), andgreater language and math skills (McCormicket al. 2006) in the intervention as compared withthe control condition.
The Nurse Family Partnership, a home-visiting intervention for first-time mothers, hasbeen tested in three large-scale randomizedtrials. Nurses visited mothers at home duringpregnancy and/or during the first two yearsof the child’s life to provide education abouthealthy prenatal behaviors, competent earlychild care, and strategies to improve thematernal life-course, such as planning futurepregnancies and seeking education and employ-ment. In the first trial, all first-time pregnantwomen in the area were invited to participate inthe study. Women were randomly assigned toone of four conditions: screening and referralonly; screening/referral and free transportationto child care; screening/referral with freetransportation to child care and home visits bya nurse during pregnancy; or all of the formerservices plus home visits by a nurse until thechild was 2 years old (Olds et al. 1994a). Whenthe children were 4 years old, nurse-visitedmothers were found to have lower rates ofabuse and neglect and home environmentsthat were safer and more supportive of childlearning in comparison with mothers who werenot visited (Olds et al. 1994a). Children bornto nurse-visited mothers who smoked duringpregnancy had less of a decline in IQ by age4 than did control children of mothers whosmoked during pregnancy (Olds et al. 1994b).Follow-up assessments showed that adolescentswhose mothers were visited by nurses duringpregnancy and/or infancy, in comparison withthose in the other conditions, were less likelyto have been abused, neglected, or arrested; touse drugs or alcohol regularly; or to participatein risky sexual behavior (Olds et al. 1998).
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Program effects were stronger for youth bornto low-income, unmarried teenage mothers.At age 19, daughters of low-income motherswho were visited by nurses had fewer arrestsand convictions, less Medicaid use, and fewerchildren themselves (Eckenrode et al. 2010)than did those in the other conditions. A secondtrial, which recruited primarily low-incomeAfrican American first-time mothers who weremostly adolescent and unmarried, assignedmothers to receive prenatal nurse home-visits,postnatal nurse home visits for two years, orno nurse visits (Olds et al. 2004a). Four yearslater, when the children were 6 years old,nurse-visited mothers had fewer subsequentbirths, longer romantic relationships, and lessreliance on welfare than the mothers in thecontrol conditions. Children whose motherswere in the nurse-visited condition had agreater ability to mentally process informationand provide coherent stories in response tostems, had higher receptive vocabulary, andfewer behavior problems in the borderlineor clinical range at age 6 (Olds et al. 2004a).When the children were 9 years old, thosein the nurse-visited condition had higherGPAs and achievement test scores in math andreading than those in the control conditions(Olds et al. 2007). A third trial compared theeffects of home visits by paraprofessionals tohome visits by nurses. When the childrenwere 4 years old, nurse-visited mothers weremore sensitive, provided safer and morelearning-supportive home environments, andwere involved in less domestic violence thanthe mothers visited by paraprofessionals (Oldset al. 2004b). Further, children of nurse-visitedmothers showed a greater ability to sustainattention, inhibit motor control and adapt theirbehavior and control their emotions duringbehavioral tasks, and used more advancedlanguage than children whose mothers werevisited by paraprofessionals (Olds et al. 2004b).
Early Childhood
The acquisition of self-regulation skills, suchas paying attention, appropriately expressing
emotions, planning, and problem solving, anddeveloping social competencies such as jointplay with peers and perspective taking are de-velopmental task of early childhood (ages 4through 7) (NRC/IOM 2000). Critical devel-opmental tasks also include adapting success-fully to school and developing nonaggressiverelations with peers (Hinshaw 1992). Childrenwho have difficulty regulating their behavior orwho are aggressive toward others are at elevatedrisk for a wide range of problems throughoutchildhood and into adulthood, including aca-demic failure, conduct disorder, delinquencyand criminality, and substance abuse (Broidyet al. 2003, Fergusson & Horwood 1998). Acommon theme of interventions during earlychildhood is the promotion of parenting prac-tices that decrease aggression and facilitatehealthy transition into school.
We identified eight experimental trials thatwere for parents of children ages 4 through7 and that met our criteria. One of these in-terventions was universal and was designed topromote a healthy transition to kindergarten(Cowan et al. 2005); several targeted parentsin high-risk families [e.g., poor, lived in high-crime areas, or had a child who was incar-cerated (e.g., Brotman et al. 2008)]; otherstargeted children whose parents rated themas having high levels of externalizing behav-ior problems (e.g., August et al. 2001). Roughlyhalf of these programs included primarily eth-nic minority families. The majority of the pro-grams used a group format, and many includedadditional components for parents designed toincrease parental involvement in school (e.g.,McDonald et al. 2006), help parents obtainhealth or family services (August et al. 2001,Tolan et al. 2004), or help parents manageliving in a neighborhood with high levels ofviolence (Tolan et al. 2004). Some includedcomponents for children, such as skills trainingor academic tutoring (e.g., August et al. 2001,Bernat et al. 2007). Control conditions typi-cally consisted of no-intervention conditions,brief informational parent sessions, or mailingsof printed information on behaviorally orientedparenting skills.
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About half of the studies assessed pro-gram effects on parenting within one yearof completing the program. These studiesfound that the programs improved aspects ofpositive parenting such as responsiveness (e.g.,Brotman et al. 2008) and warmth (Cowan et al.2005), as well as increased the use of effectivediscipline strategies (e.g., Bernat et al. 2007,Brotman et al. 2008, Reid et al. 2001, Tolanet al. 2004). Several interventions increasedparents’ support for a positive transition toschool by teaching strategies to support childlearning at home (Brotman et al. 2008) orto become more involved in school (Reidet al. 2001; Tolan et al. 2004, 2009). Aboutone-third of the studies found that programeffects on parenting practices were maintainedbetween one and six years after the programended [e.g., improved discipline (Brotmanet al. 2008), increased parental support of childlearning (Brotman et al. 2008), and increasedsupervision (Tremblay et al. 1995)]. In two-thirds of the studies, researchers did not reporton long-term program effects on parenting.
Nearly all of the studies found programeffects on child outcomes assessed one yearor more after the intervention ended. Severalstudies reported reduced externalizing prob-lems (Bernat et al. 2007, Strayhorn & Weidman1991), decreased internalizing problems (e.g.,Cowan et al 2005, Strayhorn & Weidman1991), higher academic achievement and en-gagement in school (e.g., Cowan et al. 2005,Tremblay et al. 1995), and increased socialcompetence (e.g., Brotman et al. 2008). Whenassessed in middle childhood (two or moreyears after the intervention), children whoseparents received the programs were found tohave fewer externalizing problems (e.g., Tolanet al. 2004, 2009), fewer delinquent behaviors(McCord et al. 1994), fewer internalizing prob-lems (Cowan et al. 2005), and better school ad-justment (McDonald et al. 2006; Tolan et al.2004, 2009) compared to children whose par-ents were in the control conditions. When as-sessed in adolescence, youth whose parents re-ceived early childhood parenting interventionshad fewer behavior problems (Cowan & Cowan
2006), less substance use (Tremblay et al. 1995),and engaged in less delinquent behavior (Trem-blay et al. 1995) than those whose parents werein the control conditions. Several studies foundthe effects of the programs were greater forhigh-risk families that had high levels of familyproblems or child behavior problems at pro-gram entry (e.g., Reid et al. 2001).
The Incredible Years (IY) program wasdesigned to reduce child behavior problemsthrough parent training, which focuses on im-proving parent competencies, parent involve-ment in school, and effective managementof child behavior problems (Webster-Stratton1987). The program also focuses on helpingparents support effective behavioral regulationskills and social competencies, which are seenas important for preventing the developmentof child externalizing problems. Although theprogram has primarily been tested with parentsof children whose behavior problems exceededthe clinical threshold, adapted versions of thisprogram have been incorporated in several pre-vention trials (Bernat et al. 2007, Brotman et al.2008, Gross et al. 2009).
One of the prevention trials of the IY pro-gram included 634 low-income mothers witha child enrolled in a Head Start program (Reidet al. 2001). Mothers were randomly assigned toan 8- to 12-session parenting program or a no-intervention control condition. One year later,mothers who received the program showedmore positive parenting practices, used fewercritical statements and commands, were moreconsistent in their interactions with their chil-dren, and reported greater parenting compe-tence than those in the control group. Childrenwhose mothers received the program showedfewer behavior problems and more positive be-haviors at one-year follow-up as compared tothose in the control group. A program for par-ents with preschoolers (age 4) whose older sib-lings were incarcerated included an adaptionof the IY (Brotman et al. 2008). Families wererandomly assigned to the intervention (i.e., 22parent group sessions, 20 child group sessions,10 home visits over eight months, and threemonthly booster sessions) or a no-intervention
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control condition. Sixteen months after theprogram ended (one year after the booster ses-sions), parents in the intervention conditionused more responsive parenting and less harshparenting and provided more stimulation forlearning in interactions with their children thanthose in the control condition. Children whoseparents participated in the intervention had fivetimes fewer aggressive acts than those whoseparents were in the control condition.
Middle Childhood
Middle childhood (ages 8 to 12) is marked bygrowth in cognitive competencies (e.g., prob-lem solving, perspective taking), social relation-ships, self-concept, self-regulation, and socialresponsibility (Collins et al. 2002). Childrenin this age range increasingly deal with influ-ences beyond the family such as bullying, vio-lence, and peers who use substances. Relativeto parenting at earlier ages, effective parentingincludes greater effort to have children regu-late their own behavior; greater monitoring ofchildren’s behavior; more emphasis on help-ing children to increase goal-directed behav-iors, develop a sense of social responsibility, andengage in prosocial behavior; and greater atten-tion to decreasing antisocial behavior (Collinset al. 2000).
We identified 11 trials that met our criteria.The majority of the studies were designed toprevent adolescent substance use and conductproblems or delinquency. The programsincluded parent components such as parentinggroups (e.g., Kosterman et al. 1997), mailed ed-ucational materials (e.g., Jackson & Dickinson2003), or in-home family visits (e.g., Hostetler& Fisher 1997). Nearly all of the interventionsalso included a classroom-based, family-based,or group-based youth component that includededucation about drugs, tobacco, and alcohol;anger management; social problem solving; orfamily communication. Some studies found thatthe child component increased the programeffects on child behavior relative to the parentcomponent (Lochman & Wells 2004, Schinkeet al. 2004), but one study found that the addi-
tion of a teen group component to the parentgroup was associated with an iatrogenic effect(Dishion & Andrews 1995). About one-thirdof the studies were universal interventions;close to half were selected interventionstargeting youth at risk because of poverty, andone-quarter were indicated interventions thattargeted youth with externalizing behaviorproblems or low grades. Comparison con-ditions included no-intervention conditions,mailed information on adolescent develop-ment, or monetary payments to control schools.
Three-quarters of the evaluations reportedeffects on parenting within one year afterthe intervention was completed, includingimprovements in family communication(Kosterman et al. 1997), family problemsolving (DeGarmo & Forgatch 2005), manage-ment of child behavior (Redmond et al. 1999),discipline (Lochman & Wells 2004), and qual-ity of parent-youth relationships (Dishion &Andrews 1995, Kosterman et al. 1997) as wellas parent attitudes about youth substance use( Jackson & Dickinson 2003). Only one studyfound effects on parenting more than a yearafter the program ended. This study found thatparents who participated in a substance-useprevention program as compared to those inthe control condition strengthened their normsagainst substance use across the two years afterthe program ended (Park et al. 2000).
As assessed one or more years after partici-pation, positive program effects were found onyouth delinquency (Eddy et al. 2003, Lochman& Wells 2004), substance use (Dishion et al.2002, Hostetler & Fisher 1997, Spoth et al.1999), and social competence and appropriatebehavior at school (Lochman & Wells 2004). Anumber of the studies also found program ef-fects in adolescence (from three to seven yearsafter the intervention), including decreases indelinquency, conduct problems, internalizingproblems (Mason et al. 2007, Trudeau et al.2007), risky sexual behavior (Brody et al. 2008),and substance use (e.g., Connell et al. 2007,DeGarmo et al. 2009); reductions in suscepti-bility to negative peer influence (Brody et al.2008, Schinke et al. 2004); and increases in
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academic success (Spoth et al. 2008, Stormshaket al. 2009). Several studies found the interven-tion effects were greater for sub-groups includ-ing youth who were at risk because of existingbehavior problems or family stressors (Brodyet al. 2008, Connell & Dishion 2008) andfor preadolescent aggressive boys (Lochman &Wells 2004).
The Iowa Strengthening Families Program(ISFP; Molgaard & Spoth 2001) was designedto prevent substance use and other risky behav-iors during the transition to adolescence. Theprogram consists of six separate sessions for par-ents and children and one joint session for par-ents and children. One universal trial of sixth-graders compared the ISFP and another familyintervention (Preparing for the Drug FreeYears; Park et al. 2000) to a control group thatreceived materials via mail. One year after theprogram, parents in the ISFP condition werefound to have improved skills to manage childbehavior and improved parent-child relation-ship quality as compared to those in the controlcondition (Redmond et al. 1999). Six years afterthe program, adolescents whose parents were inthe ISFP condition also initiated substance uselater (Spoth et al. 2006) and had fewer internal-izing disorders (Trudeau et al. 2007), greateracademic engagement and success (Spoth et al.2008), and less delinquent behavior (Spothet al. 2000) than those in the control condition.
The ISFP was adapted for rural AfricanAmerican youth and tested with 284 11-year-old rural African American youth andtheir parents (Brody et al. 2004). The StrongAfrican American Families program (SAAF)was designed to prevent adolescent substanceuse and early sexual behavior by promotingvigilant parenting, which involves increas-ing parental involvement in the child’s life,parent-child communication about alcohol andsex, use of inductive and consistent discipline,and parental monitoring. The program alsoincluded a component to promote racialsocialization of the youth by the parents.At the end of the program, parents in theintervention condition had better adaptiveparenting in terms of limit setting, monitoring,
inductive discipline, racial socialization, andcommunication about sex and alcohol thandid parents in the no-intervention controlgroup. Twenty-nine months later, youthwhose families participated in the interventionwere less influenced by peers, engaged in lessrisky sexual behaviors, and showed a decreasein conduct problems over time compared withthose in the control group (Brody et al. 2008). Aparticularly intriguing aspect of the evaluationinvolved testing a program × gene interaction.The program reduced growth in risky behavior(drug or alcohol use or sexual intercourse) over29 months for youth who were at genetic riskdue to a polymorphism in the HTTLPR gene.Those at genetic risk in the control group hadtwo times the increase in risky behavior com-pared with those at genetic risk whose familiesparticipated in SAAF (Brody et al. 2009).
Adolescence
Adolescence marks a period of sexual and physi-cal maturation, which in turn affects how youthsee themselves and are seen by their parentsand peers (Steinberg & Silk 2002). Adolescentsthink more abstractly and hypothetically thanthey did when in middle childhood, and theyare developing an increased sense of auton-omy and identity. Adolescents are increasinglyinfluenced by peers and are exposed to moreopportunities for risky behavior. Despite theincreasing salience of these influences outsidethe family and the challenges that the adoles-cent’s physical, social, and cognitive changespose for parents, adolescents continue to begreatly influenced by their parents (for a review,see Steinberg & Silk 2002).
We identified six trials that met our criteria,all of which focused on preventing adolescentsubstance use or risky sexual behavior by edu-cating parents about such risks and promotingparent-adolescent communication about thesetopics. The programs included components forparents, such as parent groups (e.g., Villarruelet al. 2008) or mailed information (Ennett et al.2001), and components that included teens,such as family sessions (Pantin et al. 2009)
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or adolescent group sessions (e.g., Goldberget al. 2000). Comparison conditions were no-intervention control groups, self-administeredprograms, or a combination of existing com-munity programs or English classes for nativespeakers of languages other than English. Fourof the six studies measured program effects onparenting and reported that parents who re-ceived an intervention as compared to controlswere more likely to discuss drugs, alcohol, to-bacco, and sex with their teenagers (Ennett et al.2001), had better overall communication withtheir teenagers (Pantin et al. 2009, Villarruelet al. 2008), and reported more positive parent-ing up to one year following the intervention(Prado et al. 2007). One year after the interven-tion, teens whose families participated were lesslikely to drink alcohol, smoke, or participatein unsafe sexual behavior (Pantin et al. 2009),and reported less intention to use illegal drugs(Goldberg et al. 2000) than those whose fami-lies did not receive an intervention. Two yearslater, programs were found to reduce drug use(Prado et al. 2007), decrease favorable attitudesabout substance use (Haggerty et al. 2007), in-crease safe sexual practices (Pantin et al. 2009),and reduce the rate of externalizing disorders(Pantin et al. 2009) relative to the controlconditions.
Familias Unidas is an intervention for His-panic families that targets facilitating parent-adolescent communication and bonding, sup-porting parental involvement in extrafamilialcontexts in which adolescents participate, andbuilding supportive relationships between par-ents to reduce their isolation (Pantin et al.2003). The program includes parent groupsthat meet weekly over a nine-month period andhome visits focused on implementing the skillstaught in the program. The program has beentested with both selected and indicated sam-ples of eighth-graders with at least one parentborn in a Spanish-speaking country. In the se-lected trial, families were randomly assigned tothe Familias Unidas program combined with anHIV prevention program that promoted parentcommunication about HIV risk, English lan-guage classes for Spanish-speaking parents and
the HIV prevention program, or to languageclasses plus another health intervention (Pradoet al. 2007). Families that participated in Fa-milias Unidas combined with the HIV preven-tion program showed improvements in positiveparenting and parent-adolescent communica-tion at posttest. Adolescents whose parents re-ceived this intervention reported less cigaretteuse compared with those in the other two con-ditions and less illicit drug use relative to theother health intervention across 24 months fol-lowing the intervention. The indicated preven-tion trial targeted families of eighth-graderswith adolescents who had high behavior prob-lems as reported by parents (Pantin et al. 2009).The intervention was found to improve pos-itive parenting, parent-teen communication,and parental monitoring at six months after theprogram relative to the control group that wasreferred to community services. Youth whoseparents participated in the program had less ofan increase in substance use approximately twoyears after the study, had fewer symptoms ofexternalizing disorders, and were more likelyto use condoms than youth whose parents didnot receive the intervention (Pantin et al. 2009).
Resilience Promotion Programs forYouth in Stressful Situations
Seven trials evaluated the effects of parentinginterventions with families of children span-ning multiple developmental periods who wereexposed to stressful situations. Most of theseprograms were designed to help families fac-ing a specific stressor such as parental divorceor separation (Braver et al. 2005, DeGarmoet al. 1999, Wolchik et al. 2002b), parentalmethadone treatment (Catalano et al. 1999),parental depression (Beardslee et al. 2003), orparental bereavement (Sandler et al. 2010a).Based on empirical support for parenting as aresilience resource (Luthar 2006), these pro-grams taught parents to use effective parentingtechniques and to deal with stressor-specific is-sues (e.g., reducing interparental conflict fol-lowing divorce, Braver et al. 2005; dealingwith parental grief following death of a spouse,
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Sandler et al. 2010b; dealing with depressionof a parent, Beardslee et al. 2003). Severalof the programs also included a child-focusedcoping enhancement component (e.g., Beard-slee et al. 2003, Sandler et al. 2010a, Wolchiket al. 2002a). Typical comparison conditionsincluded no-treatment control groups, mailedliterature concerning how to adapt to thestressful situation, or a brief lecture-only con-dition. One program targeted schoolchildrenand adolescents exposed to multiple sources ofstress in an economically impoverished com-munity with a high crime rate and high ratesof substance abuse (LoSciuto et al. 1997). Theparenting program consisted of monthly par-enting classes and home visits to encourageparent participation in other aspects of themulticomponent community-focused program(LoSciuto et al. 1997). Evaluations of these pro-grams have shown program effects on multipleaspects of parenting, including improvementsin the quality of the parent-child relation-ship, increases in effective discipline (DeGarmoet al. 1999, Sandler et al. 2003, Wolchik et al.2007), and improvements in family rule-setting(Catalano et al. 1999, Ennett et al. 2001). Sev-eral programs reported that improvements inparenting lasted one year following programcompletion (e.g., Forgatch et al. 2009). Theinterventions reduced a wide range of childand adolescent problems between two and nineyears after the program, including diagnosedmental disorder (Wolchik et al. 2002a), exter-nalizing behavior problems (DeGarmo et al.1999, Sandler et al. 2010a, Wolchik et al.2002a), police arrests (Forgatch et al. 2009),internalizing problems (Braver et al. 2005;Sandler et al. 2010a; Wolchik et al. 2002a,2007), substance use (Wolchik et al. 2002a),cortisol dysregulation (Luecken et al. 2010),and grief (Sandler et al. 2010b). A few pro-grams reported long-term effects on school per-formance, self-esteem, and active coping (e.g.,Sandler et al. 2003, 2010a; Wolchik et al. 2002a,2007).
The New Beginnings Program (NBP;Wolchik et al. 2000, 2002a) is an 11-sessionprogram designed to improve parenting by the
residential mother following divorce. One ofthe two experimental trials of the NBP com-pared the NBP to the NBP plus a child cop-ing program and a literature control condition.No significant additive effects were found forthe child coping component as compared tothe NBP-only condition at posttest or short-or long-term follow-ups. At six-year follow-up, youth whose mothers participated in theNBP had lower rates of meeting criteria of diag-nosed mental disorder, fewer internalizing andexternalizing problems, less substance use andrisky sexual behavior, and higher self-esteemand school grades (Wolchik et al. 2002a) thanthose in the literature control condition, withstronger effects occurring for those who wereat higher risk at program entry. The Family Be-reavement Program (FBP; Sandler et al. 2003)is a 12-session program that included a care-giver group that was based on the NBP pro-gram, a child coping group, and two individualsessions for the caregivers. At six-year follow-up, youth in the FBP as compared to thosein the literature control condition had loweryouth, caregiver, and teacher reports of exter-nalizing problems, lower teacher report of in-ternalizing problems, higher self-esteem, lowerproblematic grief, and less HPA axis dysregu-lation as assessed by evening cortisol (Lueckenet al. 2010; Sandler et al. 2010a,b). Spousallybereaved caregivers in the FBP as comparedto those in the control condition had lowerlevels of depression and general mental healthproblems and were less likely to be above thecut point for moderate or higher levels of de-pression at six-year follow-up (Sandler et al.2010a).
Summary
The findings of the 46 randomized trials pro-vide evidence that interventions that includea parenting component led to improvementsacross a broad range of youth problem out-comes and competencies from 1 to 20 yearsfollowing the intervention. The outcomes thathave been changed include problems withhigh individual and societal costs, such as
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mental disorder, child abuse, substance use,delinquency, risky sexual behaviors, and aca-demic difficulties. The content of the parent-ing interventions differed across developmentperiods to address differences in the key de-velopmental tasks facing youth, and long-termprogram effects have been demonstrated for in-terventions that were delivered during each de-velopmental period. Teasing out the specific ef-fects of the parenting components of these pro-grams is complicated by the fact that 25 of the 46studies included components in addition to par-enting. To date, few researchers have used ex-perimental designs such as sequential disman-tling designs that would allow the assessment ofthe independent effects of the parenting com-ponents or the additive effects of other compo-nents (West & Aiken 1997). In several studies,researchers have compared the effects of theirparenting component to those of other inter-vention conditions and have demonstrated thepositive contribution of the parenting compo-nents (e.g., Bodenmann et al. 2008, Cowan et al.2007, Prado et al. 2007), and some have foundthat adding other components to the parent-ing component did not yield additional ben-efits (e.g., Wolchik et al. 2002a). Given dif-ferences in costs for single- versus multiple-component programs and the importance ofidentifying combinations of components withmaximal effects, additional research is neededto examine the effects of parenting versus othercomponents.
Twenty studies tested the long-term effectsof a parent intervention when used withoutother components, of which 8 found support forlong-term effects to strengthen parenting and13 found support for long-term effects on youthoutcomes, such as behavior problems (Sanderset al. 2007, Wolchik et al. 2002a), delinquency(Eckenrode et al. 2010, Forgatch et al. 2009),substance use (Pantin et al. 2009, Wolchiket al. 2002a), and academic performance(McDonald et al. 2006, Olds et al. 2007,Wolchik et al. 2002a). These findings supportthe efficacy of parenting interventions to im-prove long-term outcomes for youth. However,
they tell us little about how these programs havetheir effects, including whether their effects aredue to the skills taught in the program or tononspecific effects of the intervention (Shapiro& Shapiro 1997).
INTEGRATING THEORETICALPROPOSITIONS ABOUT THELONG-TERM EFFECTS OFPARENTING INTERVENTIONSINTO THE ANALYSIS OFPREVENTION TRIALS
In this section, we describe research on thepathways by which these programs have long-term effects on youth outcomes. The discussionis structured along the lines of the two theoret-ical propositions about factors that account forthe long-term effects of the parenting programsdiscussed above.
Proposition 1: The Long-TermEffects of Parenting Interventions areDue to Program Effects to ImproveParenting
This proposition can be tested by mediationanalysis in which the program is the exoge-nous variable, change in parenting is the pu-tative mediator, and the analysis tests whetherthe program effects on parenting account forprogram effects on the outcomes. Ten ofthe trials reported analysis of mediation (seeTable 1). Nearly half of the studies that in-cluded meditation analyses involved interven-tions that took place during middle childhood,and one-quarter were stressor-specific inter-ventions delivered to parents with offspring atmultiple developmental periods. The parentingvariables that were found to mediate programeffects on youth outcomes included parentalwarmth (Zhou et al. 2008), authoritative par-enting (Cowan et al. 2005), effective and con-sistent discipline (Bernat et al. 2007, Lochman& Wells 2002, Zhou et al. 2008), parental mon-itoring (Dishion et al. 2003), and good fam-ily communication and problem solving (Brody
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et al. 2008, DeGarmo et al. 2009). Parentingwas found to mediate program effects on a va-riety of youth outcomes, including academicsuccess (Spoth et al. 2008, Zhou et al. 2008),substance use (Dishion et al. 2003, Pantinet al. 2009, Prado et al. 2007), delinquency(DeGarmo & Forgatch 2005, Forgatch et al.2009), internalizing and externalizing prob-lems (Zhou et al. 2008), and conduct problems(Brody et al. 2008). There is a pattern of find-ings across studies for parenting to mediate pro-gram effects on externalizing problems and/orsubstance abuse, a complex of problems that hasbeen labeled “problem behaviors” (Biglan et al.2004).
Although these findings provide someevidence that supports parenting as a mediatorof the long-term effects of parenting programson youth outcomes, limitations in these studiespresent serious barriers to aggregating findingsacross studies. Most prominently, only 10 ofthe 46 studies reported findings on mediation.None of the 13 programs delivered to infantsor toddlers reported results of mediationanalyses. Ten of the 46 studies did not evenreport on whether program effects occurredon the parenting variables targeted in the pro-gram. Only 23 studies reported on long-termprogram effects on parenting variables oneyear or longer following the program, withsignificant effects reported in 17 studies. Also,the intervention components varied widelyacross the programs, including the presence ofcomponents to change other aspects of parents’behavior (e.g., mental health problems, use ofsocial services) or children’s behavior (e.g., cop-ing, academic performance). There were alsodifferences across studies in the measures ofparenting and youth outcomes and in the timelags between the variables in the meditationmodels.
In addition, there was considerable variabil-ity in the methods used in the mediation anal-yses. Many studies tested for mediation by as-sessing whether a program effect became non-significant after the mediator was included inthe analysis. This test is not ideal because a me-
diated effect may be present whether or not theprogram effect is nonsignificant after adjust-ment for the mediator. The difference in theprogram effect coefficient before and after themediator is added is an estimator of the medi-ated effect that is appropriately tested for sig-nificance, called a difference in coefficients test,and is equivalent to a product of coefficient testfor normal theory models. Similarly, mediationeffects may be present even when there is not aprogram effect on the outcome, which may berare but can occur. More accurate tests are ob-tained by testing the significance of the programon the mediator and the mediator to outcomeafter adjustment for the program, known as ajoint significance test (MacKinnon et al. 2002).The joint significance test is easy to conduct butdoes not explicitly estimate the mediated effectand its standard error to compute confidenceintervals for the mediated effect. The product ofcoefficients test provides an estimate of the me-diated effect and its standard error. A few studiesreported the statistical significance of the prod-uct of coefficients estimate of the mediated ef-fect using its standard error. Tests with the bestbalance of statistical power and Type I errorrates are product of coefficients tests based onthe distribution of the product and tests basedon resampling methods; software is availablefor conducting these more accurate tests (fora complete review of methods to test mediationwith examples, see MacKinnon 2008).
Optimally, tests of mediation would presenteffect-size measures of the relation of the inter-vention to the mediator, the effect size for themediator to the outcome variable adjusted forthe program variable, and the effect size for therelation of the program variable to the outcomeadjusted for the mediator. With this informa-tion, effect-size measures could be combinedacross studies to yield quantitative evidence fora mediation relation. Additional estimates ofmediated effects, effect sizes, and confidencelimits would improve comparisons across stud-ies. Reporting estimates and standard errorsof mediation relations in each study for eachpotential mediator would allow for a richer
www.annualreviews.org • Long-Term Effects of Parenting Programs 315
Ann
u. R
ev. P
sych
ol. 2
011.
62:2
99-3
29. D
ownl
oade
d fr
om w
ww
.ann
ualr
evie
ws.
org
by U
nive
rsity
of
Nev
ada
- R
eno
on 1
2/01
/11.
For
per
sona
l use
onl
y.
PS62CH12-Sandler ARI 11 November 2010 12:43
Tab
le1
Med
iati
onan
alys
isof
long
-ter
mpr
ogra
mef
fect
son
child
prob
lem
san
dco
mpe
tenc
ies
Pro
gram
and
sam
ple
Con
diti
ons
com
pare
din
med
iati
onal
mod
elP
rogr
amef
fect
son
med
iato
r(s)
Med
iato
ref
fect
son
outc
ome(
s)T
est
ofm
edia
tion
Scho
olch
ildre
nan
dT
heir
Fam
ilies
Pro
ject
To
faci
litat
ech
ildtr
ansi
tion
tosc
hool
n=
100
fam
ilies
with
child
prep
arin
gto
star
tkin
derg
arte
n(m
ean
age
=5)
Pro
gram
sin
clud
ed16
-wee
kco
uple
sgr
oups
focu
sed
eith
eron
mar
itals
kills
(mar
ital
inte
rven
tion)
orpa
rent
ing
skill
s(p
aren
ting
inte
rven
tion)
com
pare
dto
cont
rolg
roup
rece
ivin
gye
arly
pare
ntco
nsul
tatio
n(C
owan
etal
.200
5)
Mar
itali
nter
vent
ion
vers
usco
ntro
lP
aren
ting
inte
rven
tion
vers
usco
ntro
l
Pos
ttes
t:re
duce
dm
othe
ran
dfa
ther
auth
orita
rian
pare
ntin
gP
ostt
est:
redu
ced
fath
erau
thor
itari
anpa
rent
ing
1ye
ar:r
educ
edm
arita
lco
nflic
t1
year
:red
uced
mot
her
and
fath
erau
thor
itari
anpa
rent
ing
Pos
ttes
t:R
educ
edfa
ther
auth
orita
rian
pare
ntin
g
1ye
ar:m
edia
ted
effe
cts
onch
ildre
n’s
perc
eive
dac
adem
ican
dso
cial
com
pete
nce
1ye
ar:m
edia
ted
effe
cts
onin
crea
sed
child
acad
emic
achi
evem
ent(
Pea
body
Indi
vidu
alA
chie
vem
entT
est)
1ye
ar:m
edia
ted
effe
cts
onin
crea
sed
teac
her-
repo
rted
acad
emic
com
pete
nce
2ye
ars:
med
iate
def
fect
son
incr
ease
dso
cial
com
pete
nce
and
high
erac
adem
icac
hiev
emen
t1
year
:med
iate
def
fect
son
redu
ced
child
exte
rnal
izin
gan
din
tern
aliz
ing
prob
lem
s
Tes
ted
whe
ther
the
prog
ram
affe
cted
the
med
iato
rsan
dw
heth
erth
em
edia
tors
wer
ere
late
dto
the
outc
ome
Ear
lyR
iser
s“S
kills
for
Succ
ess”
prog
ram
To
prev
entc
ondu
ctdi
sord
eran
dag
gres
sion
n=
151
at-r
isk
first
-gra
ders
with
high
leve
lsof
teac
her-
rate
dag
gres
sion
Pro
gram
incl
uded
3co
mpo
nent
sde
liver
edto
allf
amili
esin
inte
rven
tion
cond
ition
(i.e.
,su
mm
erpr
ogra
m,c
hild
grou
p,fa
mily
skill
spa
rent
grou
ps)a
nd2
com
pone
nts
deliv
ered
asne
eded
byfa
mili
es(i.
e.,s
choo
lsu
ppor
tpro
gram
,fam
ilysu
ppor
tpro
gram
)(B
erna
teta
l.20
07)
Ear
lyR
iser
sve
rsus
no-i
nter
vent
ion
cont
rol
3ye
ars:
incr
ease
def
fect
ive
disc
iplin
e3
year
s:im
prov
edso
cial
skill
s
6ye
ars:
med
iate
dto
decr
ease
dop
posi
tiona
l-de
fiant
sym
ptom
s6
year
s:m
edia
ted
tode
crea
sed
oppo
sitio
nal-
defia
ntsy
mpt
oms
Join
tsig
nific
ance
test
and
test
ofm
edia
ted
effe
ct(B
aron
&K
enny
1986
,Mac
Kin
non
1994
,Sob
el19
82)
316 Sandler et al.
Ann
u. R
ev. P
sych
ol. 2
011.
62:2
99-3
29. D
ownl
oade
d fr
om w
ww
.ann
ualr
evie
ws.
org
by U
nive
rsity
of
Nev
ada
- R
eno
on 1
2/01
/11.
For
per
sona
l use
onl
y.
PS62CH12-Sandler ARI 11 November 2010 12:43
Cop
ing
Pow
erT
opr
even
tagg
ress
ion
and
beha
vior
prob
lem
sn
=18
3fif
th-g
rade
boys
,pr
imar
ilylo
win
com
e,ra
ted
asag
gres
sive
byte
ache
rsP
rogr
amco
nsis
ted
ofC
opin
gP
ower
child
grou
ps(8
sess
ions
infir
stye
aran
d20
sess
ions
inse
cond
year
)or
Cop
ing
Pow
erch
ildgr
oups
plus
pare
ntpr
ogra
m(1
6m
onth
lygr
oups
).In
anal
yses
,2in
terv
entio
nco
nditi
ons
wer
eco
mbi
ned
and
com
pare
dto
ano
-int
erve
ntio
nco
ntro
lgro
up(L
ochm
an&
Wel
ls20
02)
Chi
ldpr
ogra
mw
ith/w
ithou
tpa
rent
prog
ram
vers
usco
ntro
l
Pos
ttes
t:im
prov
edpa
rent
and
yout
hpr
ogra
mta
rget
s(fi
ve-f
acto
rm
odel
cons
istin
gof
pare
ntal
inco
nsis
tent
disc
iplin
e,yo
uth
attr
ibut
ions
,out
com
eex
pect
atio
ns,i
nter
nal
cont
rol,
and
perc
eptio
nsof
othe
rs)
Pos
ttes
t:im
prov
edpa
rent
and
yout
hpr
ogra
mta
rget
s(fi
ve-f
acto
rm
odel
,see
abov
e)P
ostt
est:
impr
oved
pare
ntan
dyo
uth
prog
ram
targ
ets
(five
-fac
tor
mod
el,s
eeab
ove)
1ye
ar:3
vari
able
sm
edia
ted
tose
lf-re
port
edyo
uth
delin
quen
cy:p
aren
tal
inco
nsis
tent
disc
iplin
e,yo
uth
outc
ome
expe
ctat
ions
,and
yout
hin
tern
alco
ntro
l1
year
:med
iate
dto
decr
ease
dyo
uth
repo
rts
ofsu
bsta
nce
use
(no
indi
vidu
alm
edia
tor
was
sign
ifica
nt)
1ye
ar:m
edia
ted
toim
prov
edte
ache
r-ra
ted
scho
olbe
havi
or(n
oin
divi
dual
med
iato
rw
assi
gnifi
cant
)
Tes
tofw
heth
erth
epr
ogra
mef
fect
onou
tcom
ebe
cam
eno
nsig
nific
antw
hen
adju
sted
for
med
iato
ran
dm
edia
tor
toou
tcom
ere
latio
ns;d
idno
tcite
any
test
ofm
edia
tion
Pro
ject
LIF
T:L
inki
ngth
eIn
tere
stof
Fam
ilies
and
Tea
cher
sT
ore
duce
the
risk
ofde
linqu
ency
n=
361
fifth
-gra
ders
insc
hool
sw
ithin
neig
hbor
hood
sw
ithhi
ghra
teof
juve
nile
delin
quen
cy10
-wee
kpr
ogra
min
clud
eda
clas
sroo
m-b
ased
soci
alsk
ills
and
prob
lem
-sol
ving
curr
icul
um,p
layg
roun
dbe
havi
or-m
odifi
catio
npr
ogra
m,a
ndgr
oup
pare
nttr
aini
ngse
ssio
nsw
eekl
yfo
r6
wee
ksve
rsus
noin
terv
entio
nsfo
rsc
hool
and
$2,0
00in
unre
stri
cted
fund
s(D
egar
mo
etal
.200
9)
LIF
Tpr
ogra
mve
rsus
cont
rol
Pos
ttes
t:im
prov
edfa
mily
inte
ract
ions
duri
ngob
serv
edpr
oble
m-s
olvi
ngta
skP
ostt
est:
impr
oved
fam
ilypr
oble
mso
lvin
gan
dre
duce
dob
serv
edag
gres
sive
play
grou
ndbe
havi
orP
ostt
est:
redu
ced
obse
rved
aggr
essi
vepl
aygr
ound
beha
vior
7ye
ars:
part
ially
med
iate
dre
duct
ions
inav
erag
eto
bacc
ous
e7
year
s:pa
rtia
llym
edia
ted
effe
cts
ongr
owth
ofto
bacc
ous
eov
er7
year
s7
year
s:pa
rtia
llym
edia
ted
effe
cts
onre
duct
ions
inac
cele
ratio
nof
illic
itdr
ugus
e
Pat
hm
odel
,joi
ntsi
gnifi
canc
ete
stof
prog
ram
onm
edia
tor
and
med
iato
ron
outc
ome
and
boot
stra
pte
stof
med
iate
def
fect
(Mac
Kin
non
&D
wye
r19
93,P
reac
her
&H
ayes
2004
)
(Con
tinue
d)
www.annualreviews.org • Long-Term Effects of Parenting Programs 317
Ann
u. R
ev. P
sych
ol. 2
011.
62:2
99-3
29. D
ownl
oade
d fr
om w
ww
.ann
ualr
evie
ws.
org
by U
nive
rsity
of
Nev
ada
- R
eno
on 1
2/01
/11.
For
per
sona
l use
onl
y.
PS62CH12-Sandler ARI 11 November 2010 12:43
Tab
le1
(Con
tin
ued
)
Pro
gram
and
sam
ple
Con
diti
ons
com
pare
din
med
iati
onal
mod
elP
rogr
amef
fect
son
med
iato
r(s)
Med
iato
ref
fect
son
outc
ome(
s)T
est
ofm
edia
tion
Stro
ngA
fric
anA
mer
ican
Fam
ilies
(SA
AF)
To
prev
ents
ubst
ance
use
inA
fric
anA
mer
ican
yout
hsn
=66
7A
fric
anA
mer
ican
child
ren,
age
11,f
rom
sem
irur
also
uthe
rnU
nite
dSt
ates
Pro
gram
cons
iste
dof
7-se
ssio
npa
rent
grou
pan
dse
para
te7-
sess
ion
yout
hgr
oup
com
pare
dto
no-i
nter
vent
ion
cont
rolg
roup
(Bro
dyet
al.2
004,
2008
)
SAA
Fpr
ogra
mve
rsus
cont
rol
Pos
ttes
t:in
crea
sed
regu
late
d,co
mm
unic
ativ
epa
rent
ing
(var
iabl
eco
nsis
ted
ofin
volv
ed-v
igila
ntpa
rent
ing,
com
mun
icat
ion
abou
tsex
,ra
cial
soci
aliz
atio
n,an
dex
pect
atio
nsfo
ral
coho
luse
)P
ostt
est:
impr
oved
scor
eson
prot
ectiv
epa
rent
ing
inde
x(c
onsi
sted
ofre
gula
ted
com
mun
icat
ive
pare
ntin
gva
riab
les;
see
abov
e)P
ostt
est:
impr
oved
yout
hpr
otec
tive
fact
orin
dex
(con
sist
edof
acad
emic
com
pete
nce/
enga
gem
ent,
self-
este
em,f
utur
ego
als,
risk
attit
udes
)
Pos
ttes
t:m
edia
ted
incr
ease
sin
yout
hpr
otec
tive
fact
ors
(con
sist
edof
goal
-dir
ecte
dfu
ture
orie
ntat
ion,
nega
tive
imag
esof
drin
kers
,neg
ativ
eat
titud
esab
outa
lcoh
ol/s
ex,a
ndac
cept
ance
ofpa
rent
alin
fluen
ce)
(Bro
dyet
al.2
004)
7ye
ars:
part
ially
med
iate
dre
duct
ions
inco
nduc
tpro
blem
sfo
rhi
gh-r
isk
yout
hsw
ithde
vian
tpee
rgr
oup
orlo
wse
lf-co
ntro
latp
rete
st(B
rody
etal
.200
8)7
year
s:pa
rtia
llym
edia
ted
redu
ctio
nsin
cond
uctp
robl
ems
for
high
-ris
kyo
uth
(Bro
dyet
al.2
008)
Bar
on&
Ken
ny’s
(198
6)4
cond
ition
sfo
rm
edia
tion,
test
ofjo
ints
igni
fican
ce(B
rody
etal
.200
4)B
aron
&K
enny
’s(1
986)
4co
nditi
ons,
join
tsi
gnifi
canc
e,an
dFr
eedm
an-S
chat
zkin
test
ofm
edia
ted
effe
ct(B
rody
etal
.200
8)
Iow
aSt
reng
then
ing
Fam
ilies
Pro
gram
(ISF
P)
To
prev
ents
ubst
ance
use
and
othe
rpr
oble
mbe
havi
ors
n=
667
fam
ilies
ofsi
xth-
grad
ers
from
low
-inc
ome
rura
lare
as,
238
assi
gned
toIS
FP,2
08to
cont
rol,
and
221
toan
othe
rfa
mily
inte
rven
tion
(Pre
pari
ngfo
rth
eD
rug-
Free
Yea
rs;
findi
ngs
repo
rted
else
whe
re)
Pro
gram
cons
iste
dof
vide
o-ad
apte
dve
rsio
nof
ISFP
prog
ram
that
incl
uded
6pa
rent
and
6ch
ildse
ssio
nsan
d1
join
tse
ssio
nco
mpa
red
toco
nditi
onw
ithm
aile
dm
ater
ials
abou
tsu
bsta
nce
use
(Spo
thet
al.2
008)
ISFP
vers
usco
ntro
lM
ultip
lelin
kage
mod
elP
ostt
est:
impr
oved
pare
ntin
gco
mpe
tenc
y(c
onsi
sted
offa
mily
rule
s,pa
rent
alin
volv
emen
tofc
hild
infa
mily
activ
ities
and
deci
sion
s,pa
rent
ange
rm
anag
emen
twith
inth
epa
rent
-chi
ldre
latio
nshi
p,co
mm
unic
atio
n)2
year
s:im
prov
emen
tsin
pare
ntin
gco
mpe
tenc
ym
edia
ted
incr
ease
sin
acad
emic
enga
gem
ent
6ye
ars:
acad
emic
enga
gem
enta
t2
year
sm
edia
ted
incr
ease
sin
acad
emic
succ
ess
Pat
hm
odel
with
join
tsi
gnifi
canc
ete
stan
dte
stof
med
iate
def
fect
318 Sandler et al.
Ann
u. R
ev. P
sych
ol. 2
011.
62:2
99-3
29. D
ownl
oade
d fr
om w
ww
.ann
ualr
evie
ws.
org
by U
nive
rsity
of
Nev
ada
- R
eno
on 1
2/01
/11.
For
per
sona
l use
onl
y.
PS62CH12-Sandler ARI 11 November 2010 12:43
Fam
ilias
Uni
das
To
prev
ents
ubst
ance
use
and
risk
yse
xual
beha
vior
for
His
pani
cad
oles
cent
sn
=21
3H
ispa
nic
eigh
th-g
rade
rsra
ted
bypa
rent
sas
atle
ast1
SDab
ove
nonc
linic
alm
ean
onR
evis
edB
ehav
ior
Pro
blem
sC
heck
list
Pro
gram
cons
iste
dof
92-
hour
pare
ntgr
oup
sess
ions
and
101-
hour
fam
ilyvi
sits
plus
1-ho
urbo
oste
rse
ssio
nsat
10,1
6,22
,and
28m
onth
saf
ter
the
prog
ram
com
pare
dto
no-i
nter
vent
ion
cont
rolg
roup
(Pan
tinet
al.2
009)
Fam
ilias
Uni
das
vers
usco
ntro
lP
ostt
est:
impr
oved
fam
ilyfu
nctio
ning
(con
sist
edof
posi
tive
pare
ntin
g,pa
rent
/tee
nco
mm
unic
atio
n,pa
rent
alm
onito
ring
)
30m
onth
s:pa
rtia
llym
edia
ted
togr
owth
traj
ecto
ryof
past
30-d
aysu
bsta
nce
use
acro
ssth
e30
-mon
thpe
riod
Join
tsig
nific
ance
test
and
test
ofw
heth
erpr
ogra
mef
fect
beca
me
nons
igni
fican
taft
erad
ding
med
iato
r
Fam
ilias
Uni
das+
Pre
adol
esce
ntT
rain
ing
for
HIV
Pre
vent
ion
(PA
TH
)T
opr
even
tsub
stan
ceus
ean
dri
sky
sexu
albe
havi
orfo
rH
ispa
nic
adol
esce
nts
N=
268
His
pani
cei
ghth
-gra
ders
and
thei
rpr
imar
yca
regi
vers
Fam
ilias
Uni
das
prog
ram
cons
iste
dof
92-
hour
pare
ntgr
oup
sess
ions
and
101-
hour
fam
ilyvi
sits
.PA
TH
prog
ram
cons
iste
dof
43-
hour
pare
nted
ucat
ion
sess
ions
and
1pa
rent
-chi
ldse
ssio
n.T
wo
prog
ram
sto
geth
erw
ere
com
pare
dto
PA
TH
+E
nglis
hfo
rSp
eake
rsof
Oth
erL
angu
ages
(ESO
L)
clas
ses
for
pare
nts
orE
SOL
clas
ses
+H
eart
Pow
er!F
orH
ispa
nics
prog
ram
(edu
cate
spa
rent
sab
out
adol
esce
ntca
rdio
vasc
ular
heal
th)
(Pra
doet
al.2
007)
Fam
ilias
Uni
das+
PA
TH
vers
usE
SOL
+P
AT
HFa
mili
asU
nida
s+
PA
TH
vers
usE
SOL
+H
eart
Pow
er!
Pos
ttes
t:im
prov
edfa
mily
func
tioni
ng(p
ositi
vepa
rent
ing,
pare
nt-t
een
com
mun
icat
ion)
Pos
ttes
t:im
prov
edfa
mily
func
tioni
ng(p
ositi
vepa
rent
ing,
pare
nt-t
een
com
mun
icat
ion)
36m
onth
s:pa
rtia
llym
edia
ted
topa
st90
-day
ciga
rett
eus
e36
mon
ths:
part
ially
med
iate
dto
past
90-d
ayci
gare
tte
use
and
past
90-d
aydr
ugus
e
Con
trol
led
for
each
med
iato
rin
pred
ictin
gou
tcom
esan
dde
term
ined
that
path
sre
duce
dto
nons
igni
fican
cew
ere
med
iate
dpa
ths.
No
test
ofm
edia
ted
effe
ct
(Con
tinue
d)
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/11.
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PS62CH12-Sandler ARI 11 November 2010 12:43
Tab
le1
(Con
tin
ued
)
Pro
gram
and
sam
ple
Con
diti
ons
com
pare
din
med
iati
onal
mod
elP
rogr
amef
fect
son
med
iato
r(s)
Med
iato
ref
fect
son
outc
ome(
s)T
est
ofm
edia
tion
New
Beg
inni
ngs
Pro
gram
To
prev
entm
enta
lhea
lthpr
oble
ms
inch
ildre
nw
hoex
peri
ence
dpa
rent
aldi
vorc
en
=24
0ch
ildre
nfr
omdi
vorc
edfa
mili
es,a
ges
9–12
,pr
imar
ilyno
n-H
ispa
nic
Cau
casi
anP
rogr
amco
nsis
ted
of11
-ses
sion
mot
her
grou
pw
ithor
with
out1
1-se
ssio
nch
ildgr
oup.
Inte
rven
tion
cond
ition
sw
ere
com
bine
dan
dco
mpa
red
toco
ntro
lgr
oup
that
rece
ived
liter
atur
eab
outc
hild
ren
and
divo
rce
(Bon
dset
al.2
010,
Zho
uet
al.
2008
)
Mot
her
prog
ram
with
/with
outc
hild
prog
ram
vers
usco
ntro
l
Pos
ttes
t:im
prov
edm
ater
nal
disc
iplin
e;n/
sfo
rim
prov
edm
othe
r-ch
ildre
latio
nshi
pqu
ality
Pos
ttes
t:im
prov
edm
othe
r-ch
ildre
latio
nshi
pqu
ality
;n/s
for
impr
oved
disc
iplin
eM
ultip
lelin
kage
mod
elP
ostt
est:
incr
ease
dm
othe
r-ch
ildre
latio
nshi
pqu
ality
3m
onth
san
d6
mon
ths:
led
tode
crea
sed
child
inte
rnal
izin
gpr
oble
ms
Mul
tiple
linka
gem
odel
Pos
ttes
t:in
crea
sed
effe
ctiv
edi
scip
line
3m
onth
s,6
mon
ths:
led
tode
crea
sed
child
exte
rnal
izin
gpr
oble
ms
6ye
ars:
med
iate
def
fect
son
grad
e-po
inta
vera
ge6
year
s:fo
rhi
gh-r
isk
grou
p(e
xter
naliz
ing
prob
lem
san
dfa
mily
adve
rsity
atba
selin
e),p
artia
llym
edia
ted
effe
cts
onex
tern
aliz
ing,
inte
rnal
izin
g,an
dsy
mpt
oms
ofm
enta
ldis
orde
rs(e
spec
ially
adol
esce
ntre
port
s)(Z
hou
etal
.20
08)
6ye
ars:
led
toin
crea
sed
self-
este
eman
dde
crea
sed
inte
rnal
izin
gsy
mpt
oms
6ye
ars:
led
tole
sssu
bsta
nce
use,
bett
erac
adem
icpe
rfor
man
ce(B
onds
etal
.201
0)
Tes
ted
med
iate
def
fect
usin
gco
nfide
nce
inte
rval
s(M
acK
inno
net
al.2
002)
Mul
tiple
linka
gem
odel
;did
nots
peci
fical
lyte
stm
edia
tion
Par
entin
gT
hrou
ghC
hang
eT
opr
even
tmen
talh
ealth
prob
lem
sfo
ryo
uth
who
expe
rien
ced
pare
ntal
divo
rce
n=
238
divo
rced
/sep
arat
edm
othe
rsof
boys
ages
6–9,
maj
ority
Cau
casi
anP
rogr
amco
nsis
ted
of16
-ses
sion
pare
ntm
anag
emen
ttra
inin
g(la
ter
cond
ense
dto
14se
ssio
ns)
com
pare
dto
no-i
nter
vent
ion
cont
rolg
roup
(DeG
arm
oet
al.2
004,
DeG
arm
o&
Forg
atch
2005
,Fo
rgat
ch&
DeG
arm
o19
99,
Forg
atch
etal
.200
9)
Par
entin
gT
hrou
ghC
hang
eve
rsus
cont
rol
6m
onth
s:in
crea
sed
posi
tive
pare
ntin
g(c
onsi
sted
ofpo
sitiv
ein
volv
emen
t,sk
ills
enco
urag
emen
t)1
year
:im
prov
edpo
sitiv
epa
rent
ing
1ye
ar:d
ecre
ased
mat
erna
land
child
depr
essi
on1
year
:im
prov
edpo
sitiv
epa
rent
ing
1ye
ar:i
mpr
oved
posi
tive
pare
ntin
gM
ultip
lelin
kage
mod
el:
1ye
ar:i
mpr
oved
posi
tive
pare
ntin
g8
year
s:le
dto
decr
ease
das
soci
atio
nw
ithde
vian
tpee
rsac
ross
8ye
ars
1ye
ar:m
edia
ted
effe
cts
onch
ild,
mot
her,
and
teac
her-
repo
rted
adju
stm
ent(
Forg
atch
&D
eGar
mo
1999
)30
mon
ths:
med
iate
def
fect
son
child
prob
lem
beha
vior
s(D
eGar
mo
etal
.200
4)30
mon
ths:
med
iate
def
fect
son
child
prob
lem
beha
vior
s(D
eGar
mo
etal
.200
4)36
mon
ths:
med
iate
def
fect
sto
redu
ced
delin
quen
cy(D
eGar
mo
&Fo
rgat
ch20
05)
9ye
ars:
med
iate
def
fect
onde
crea
sed
adol
esce
ntde
linqu
ency
(For
gatc
het
al.2
009)
9ye
ars:
decr
ease
dde
linqu
ency
(For
gatc
het
al.2
009)
Pat
hm
odel
;no
expl
icit
men
tion
ofm
edia
tion
(For
gatc
h&
DeG
arm
o19
99)
Tes
ted
join
tsig
nific
ance
ofpr
ogra
mto
med
iato
ran
dm
edia
tor
toou
tcom
e(D
eGar
mo
etal
.200
4)T
este
dw
heth
erth
epr
ogra
mef
fect
was
nots
igni
fican
tw
hen
med
iato
rw
asad
ded
(DeG
arm
o&
Forg
atch
2005
)T
este
dw
heth
erth
epr
ogra
mef
fect
was
nots
igni
fican
tw
hen
med
iato
rw
asad
ded
(For
gatc
het
al.2
009)
320 Sandler et al.
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integration of the mediation results acrossstudies and is an important task for futurestudies. Although the aggregation of evidencefor mediation across studies is only beginning,methods for conducting meta-analyses forprogram effects on outcomes can be extendedto mediation effects in parenting programs(MacKinnon & Brown 2010).
There are many critical theoretical issuesthat could be probed using meditation analy-sis. Four issues should be given high priority forfuture research. First, researchers should inves-tigate the specificity of such effects, includingwhether a mediated effect occurs for one aspectof parenting but not another, whether an inter-vention effect is specific to one intervention andnot another, and whether the mediated effectoccurs for some outcome variables but not oth-ers. To date, very few researchers have testedwhether different aspects of parenting accountfor changes in different outcomes (see Zhouet al. 2008 for an exception). Second, becausemany of the programs are designed to changemultiple putative mediators, researchers shouldinvestigate multiple mediator models in whichthe effects on each potential mediator are testedwithin the same model. Only a few researchershave assessed multiple mediator models (e.g.,Lochman & Wells 2002). Third, researchersshould examine whether there are multiplelinkages in the meditation chain across devel-opment, such that a program has an immediateeffect on parenting and that changes in parent-ing affect problem behaviors at a subsequenttime point, and that changes in the problem be-havior affect a different problem behavior (e.g.,substance use, delinquency) as well as parent-ing at a later time point. To date, only threeresearch groups have investigated multiple link-age models (Bonds et al. 2010, Forgatch et al.2009, Spoth et al. 2008). Fourth, given that pro-gram effects on outcomes are often moderatedby other conditions (e.g., level of youth prob-lems at baseline, gender), it is likely that the me-diated effect might also be moderated. To date,very few researchers have investigated moder-ated mediation models (Zhou et al. 2006).
Proposition 2: The Long-TermEffects of Intervention-InducedChanges in Parenting are Due toChanges in Social, Cognitive,Behavioral, and Biological Processesin Parents and Youth and in theTransactions Between Youth andTheir Social Contexts
Although the mediation findings reviewedabove provide evidence that program effectson parenting account for long-term outcomesof some interventions, they do not address theintervening processes between improvementsin parenting within one year of completing aparenting program and reductions in youthproblem outcomes or improved competenciesyears later. Theoretically, understanding theseprocesses goes beyond the question of whetherthere is a causal effect of parenting on child out-comes (Collins et al. 2000, Rutter et al. 2001) toshed light on more basic developmental issuesconcerning how competencies and disorderdevelop over time. Practically, understandingthese intervening processes should facilitatethe development of more effective and efficientinterventions by focusing interventions morestrongly on processes that are most likely tomaintain program effects over time.
In the first section of this review, we describea three-level conceptual framework of the pro-cesses by which parenting programs mightbring about long-term effects on competen-cies and problem outcomes; processes withinparents, processes within youth, and transac-tions between youth and their social contexts(see Figure 1). Below, we use this frameworkas a guide to a research agenda and describesome findings that begin to shed light on theseprocesses.
We propose that processes that occur withinparents might involve changes in parentingbehaviors, parents’ sense of efficacy of their par-enting, and reductions in barriers to effectiveparenting. Although none of the studies testedthese processes as mediators of long-termchild outcomes, a number of studies demon-strated that programs effectively changed these
www.annualreviews.org • Long-Term Effects of Parenting Programs 321
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processes more than one year followingprogram delivery. Of the 46 trials, long-termeffects were reported to change parenting(17 studies), parental efficacy (4 studies), andbarriers to effective parenting, such as parentalmental health problems (7 studies), financialstress (2 studies) and quality of the maritalrelationship (5 studies). Intervention trialsprovide a unique opportunity to study theinterrelations between long-term changes onthese variables and how they impact childlong-term outcomes. For example, it wouldbe interesting to test how program-inducedreductions in barriers to parenting, such as eco-nomic stress, impact subsequent parenting andwhether such changes lead to improvements inchild outcomes. Alternatively, it may be thatprogram-induced improvements in parentingset off a cascade of effects involving improve-ments in youth behavior problems, which thenleads to reductions in parental depression,which further improves parenting and leads tolong-term effects on youth problem behaviors.
We propose that the child pathway might in-volve program effects on problem behaviors andcompetencies, stress response processes, andbelief systems. Almost all of the studies reportedshort-term effects to reduce child problemsand/or to improve competencies, and a largenumber of studies reported significant long-term effects on both these outcomes. Illustra-tively, Bonds et al. (2010) found that programeffects to improve parental discipline at posttestled to reduced externalizing problems up to sixmonths later, which in turn led to improvedgrades six years later. Although researchers havenot yet investigated whether stress responseprocesses act as mediators of the effects of par-enting interventions on youth outcomes, sev-eral studies provide evidence that parenting in-terventions affect the biological and psycholog-ical processes involved in adapting to stress. Forexample, several studies have found that par-enting interventions modified children’s dys-regulated cortisol responses immediately afterthe intervention (Brotman et al. 2008, Dozieret al. 2006) and up to six years following theintervention (Luecken et al. 2010). One study
(Velez et al. 2010) found that program effectsto improve the mother-child relationship qual-ity mediated program effects to improve chil-dren’s active coping and coping efficacy at six-year follow-up. Several studies have reportedpositive program effects on children’s beliefsabout the self (Brody et al. 2008, LoSciutoet al. 1999, Sandler et al. 2010a, Wolchik et al.2007), beliefs about substance use or risky sex-ual behavior (Brody et al. 2004, Goldberg et al.2000, Haggerty et al. 2007, Jackson & Dickin-son 2003), attitudes toward their parent’s men-tal illness (Beardslee et al. 2003), and attitudestoward ethnic diversity (LoSciuto et al. 1997,1999). Theoretically, it would be important tostudy whether program effects on parentingmediate changes in stress responses and beliefs,which in turn lead to long-term effects on chil-dren’s problem behaviors and competencies.
We hypothesized a contextual pathway bywhich program effects on parenting lead tochanges in children’s involvement in risky orcompetence-promoting contexts or to changesin the transactions between children and theircontexts. Illustratively, Forgatch et al. (2009)found that program effects to strengthen par-enting at one-year postintervention led to de-creased association with deviant peers eightyears later, which in turn led to decreased like-lihood of delinquency. For many studies, inaddition to the parenting component, othercomponents of the intervention were designedto improve the community or school con-text through multicomponent interventions inhigh-poverty neighborhoods and schools (e.g.,LoSciuto et al. 1999). Future studies might bedesigned to more systematically assess programeffects on such contexts and to experimentallytest the effects of these different componentson youth outcomes over time (for a reviewof methodological approaches to testing com-ponents of multicomponent interventions, seeWest & Aiken 1997).
FINAL SUMMARY
This article can be seen as a tale of twoliteratures. The first literature consists of 46
322 Sandler et al.
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randomized experimental trials that includeda parenting component. Our review of thelong-term effects of these programs providedimpressive support for the ability of parentinginterventions to affect mental, emotional, andbehavioral disorders as well as the successfulachievement of developmental competence.A robust program of implementation and dis-semination research is needed to integrate theprograms shown to be effective in experimentaltrials into health, education, and communityinstitutions so they can have a significant publichealth impact (NRC/IOM 2009).
The second literature consists of studiesinvestigating the processes by which parent-ing programs have long-term effects. Becauselittle research has systematically investigatedthis issue, our knowledge of the processes bywhich they have their long-term effects is at
a rudimentary stage. In this review, we pro-posed a multilevel theoretical framework forresearch on these processes. We highlightedthe few studies that have used meditation anal-ysis to investigate the processes that accountfor the long-term effects of parenting pro-grams. These studies demonstrate the feasi-bility of research that uses randomized pre-vention trials of theoretically grounded inter-ventions to probe the pathways by which par-enting influences healthy and pathological de-velopment. Research that systematically teststhe processes through which parenting inter-ventions improve long-term youth outcomeshas great promise to advance developmentaltheory and to lead to a new generation ofmore effective approaches to prevent disor-ders and promote the healthy development ofchildren.
DISCLOSURE STATEMENT
The authors are not aware of any affiliations, memberships, funding, or financial holdings thatmight be perceived as affecting the objectivity of this review.
ACKNOWLEDGMENTS
Work on this review was supported by NIMH grants P30 MH06868 and R01 MH071707 andNIDA grant DA09757.
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PS62-FrontMatter ARI 15 November 2010 17:50
Annual Review ofPsychology
Volume 62, 2011 Contents
Prefatory
The Development of Problem Solving in Young Children:A Critical Cognitive SkillRachel Keen � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1
Decision Making
The Neuroscience of Social Decision-MakingJames K. Rilling and Alan G. Sanfey � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �23
Speech Perception
Speech PerceptionArthur G. Samuel � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �49
Attention and Performance
A Taxonomy of External and Internal AttentionMarvin M. Chun, Julie D. Golomb, and Nicholas B. Turk-Browne � � � � � � � � � � � � � � � � � � � � � �73
Language Processing
The Neural Bases of Social Cognition and Story ComprehensionRaymond A. Mar � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 103
Reasoning and Problem Solving
Causal Learning and Inference as a Rational Process:The New SynthesisKeith J. Holyoak and Patricia W. Cheng � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 135
Emotional, Social, and Personality Development
Development in the Early Years: Socialization, Motor Development,and ConsciousnessClaire B. Kopp � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 165
Peer Contagion in Child and Adolescent Socialand Emotional DevelopmentThomas J. Dishion and Jessica M. Tipsord � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 189
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Adulthood and Aging
Psychological Wisdom Research: Commonalities and Differences in aGrowing FieldUrsula M. Staudinger and Judith Gluck � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 215
Development in the Family
Socialization Processes in the Family: Social andEmotional DevelopmentJoan E. Grusec � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 243
Psychopathology
Delusional BeliefMax Coltheart, Robyn Langdon, and Ryan McKay � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 271
Therapy for Specific Problems
Long-Term Impact of Prevention Programs to Promote EffectiveParenting: Lasting Effects but Uncertain ProcessesIrwin N. Sandler, Erin N. Schoenfelder, Sharlene A. Wolchik,
and David P. MacKinnon � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 299
Self and Identity
Do Conscious Thoughts Cause Behavior?Roy F. Baumeister, E.J. Masicampo, and Kathleen D. Vohs � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 331
Neuroscience of Self and Self-RegulationTodd F. Heatherton � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 363
Attitude Change and Persuasion
Attitudes and Attitude ChangeGerd Bohner and Nina Dickel � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 391
Cross-Country or Regional Comparisons
Culture, Mind, and the Brain: Current Evidence and Future DirectionsShinobu Kitayama and Ayse K. Uskul � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 419
Cognition in Organizations
Heuristic Decision MakingGerd Gigerenzer and Wolfgang Gaissmaier � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 451
Structures and Goals of Educational Settings
Early Care, Education, and Child DevelopmentDeborah A. Phillips and Amy E. Lowenstein � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 483
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Psychophysiological Disorders and Psychological Dimensionson Medical Disorders
Psychological Perspectives on Pathways Linking Socioeconomic Statusand Physical HealthKaren A. Matthews and Linda C. Gallo � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 501
Psychological Science on Pregnancy: Stress Processes, BiopsychosocialModels, and Emerging Research IssuesChristine Dunkel Schetter � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 531
Research Methodology
The Development of Autobiographical MemoryRobyn Fivush � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 559
The Disaggregation of Within-Person and Between-Person Effects inLongitudinal Models of ChangePatrick J. Curran and Daniel J. Bauer � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 583
Thirty Years and Counting: Finding Meaning in the N400Component of the Event-Related Brain Potential (ERP)Marta Kutas and Kara D. Federmeier � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 621
Indexes
Cumulative Index of Contributing Authors, Volumes 52–62 � � � � � � � � � � � � � � � � � � � � � � � � � � � 000
Cumulative Index of Chapter Titles, Volumes 52–62 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 000
Errata
An online log of corrections to Annual Review of Psychology articles may be found athttp://psych.AnnualReviews.org/errata.shtml
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