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Moore, Kristin Anderson; Metz, Allison – Child Trends, 2008
Program providers work extremely hard to offer services that they believe will enhance the lives and future prospects of children and youth. But how can they be sure that their program is having the intended impacts? How can funders and policy makers be sure that their investments in programs are paying off in substantially better outcomes for…
Descriptors: Research Design, Program Effectiveness, Evaluation Methods, Control Groups
Peterson, Carla A.; Mayer, Lynn Milgram; Summers, Jean Ann; Luze, Gayle J. – Early Childhood Education Journal, 2010
Poverty-related factors place children at higher risk for disabilities and also serve as barriers to families accessing services for their children and themselves. Early childhood practitioners can play a critical role in supporting families by providing services to overcome these obstacles and by working in partnership with specialized early…
Descriptors: Control Groups, Research Design, Individualized Family Service Plans, Intervention
Adair, John G.; Sharpe, Donald – 1986
The Hawthorne and placebo effects in educational experiments were examined over a 20-year period, as reported in the ERIC, Dissertation Abstracts International, and Psych Info data bases. The literature searches identified 325 studies in education employing the relevant control procedures, and each study was coded for the type of placebo…
Descriptors: Control Groups, Educational Research, Expectation, Literature Reviews