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Treatment effect heterogeneity in the head start impact study: A systematic review of study characteristics and findings

Authors
Lee, Sun YeopKim, RockliRodgers, JustinSubramanian, S., V
Issue Date
12월-2021
Publisher
ELSEVIER SCI LTD
Keywords
Child development; Childhood intervention; Head start; Head start impact study; Heterogeneous effect; Treatment effect heterogeneity
Citation
SSM-POPULATION HEALTH, v.16
Indexed
SCIE
SSCI
SCOPUS
Journal Title
SSM-POPULATION HEALTH
Volume
16
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/135571
DOI
10.1016/j.ssmph.2021.100916
ISSN
2352-8273
Abstract
There have been consistent efforts to assess treatment effect heterogeneity (TEH) of Head Start using the data from the Head Start Impact Study (HSIS), a randomized controlled trial of a federally funded child development program for a nationally representative sample of low-income parents and their 3- and 4-year-old children in the United States. Including 28 studies on TEH of Head Start, this review found that multiple high-risk subgroups (e. g., children with lower cognitive abilities, Spanish-speaking dual language learners) experienced larger gains across a range of developmental and parental outcomes, but mixed results for several subgroups. Most studies focused on subgroup analyses, cognitive and social-emotional outcomes, and short-term effects. Further studies on distributional effects, health and parental outcomes, and long-term effects are warranted. Finally, suggestions for future research on TEH of Head Start are discussed, which are applicable to other child development programs and policy evaluations.
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