A meta-analysis of the effects of early developmental prevention programs in at-risk populations on non-health outcomes in adolescence

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Title A meta-analysis of the effects of early developmental prevention programs in at-risk populations on non-health outcomes in adolescence
Author Manning, Matthew; Homel, Ross; Smith, Christine Ann
Journal Name Children and Youth Services Review
Year Published 2010
Place of publication United Kingdom
Publisher Elsevier
Abstract We present the results of a meta-analytic review of early developmental prevention programs (children aged 0–5: structured preschool programs, center-based developmental day care, home visitation, family support services and parental education) delivered to at-risk populations on non-health outcomes during adolescence (educational success, cognitive development, social–emotional development, deviance, social participation, involvement in criminal justice, and family well-being). This review improves on previous meta-analyses because it includes a more comprehensive set of adolescent outcomes, it focuses on measures that are psychometrically valid, and it includes a more detailed analysis of program moderator effects. Seventeen studies, based on eleven interventions (all US-based) met the ten criteria for inclusion into the analysis. The mean effect size across all programs and outcomes was 0.313, equivalent to a 62% higher mean score for an intervention group than for a control group. The largest effect was for educational success during adolescence (effect size 0.53) followed by social deviance (0.48), social participation (0.37), cognitive development (0.34), involvement in criminal justice (0.24), family well-being (0.18), and social–emotional development (0.16). Programs that lasted longer than three years were associated with larger sample means than programs that were longer than one year but shorter than three years. More intense programs (those with more than 500 sessions per participant) also had larger means than less intense programs. There was a marginally significant trend for programs with a follow-through component into the early primary school years (e.g. preschool to Grade 3) to have more positive effects than programs without a follow-through. We conclude that the impact of well-conducted early development programs on quality of life in adolescence can be substantial for social policy purposes.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1016/j.childyouth.2009.11.003
Copyright Statement Copyright 2010 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 32
Page from 506
Page to 519
ISSN 0190-7409
Date Accessioned 2010-04-07
Language en_AU
Research Centre Key Centre for Ethics, Law, Justice and Governance
Faculty Faculty of Humanities and Social Science
Subject Causes and Prevention of Crime
URI http://hdl.handle.net/10072/32011
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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