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Raudenbush, Stephen W.; Bloom, Howard S. – American Journal of Evaluation, 2015
The present article provides a synthesis of the conceptual and statistical issues involved in using multisite randomized trials to learn about and from a distribution of heterogeneous program impacts across individuals and/or program sites. Learning "about" such a distribution involves estimating its mean value, detecting and quantifying…
Descriptors: Program Effectiveness, Randomized Controlled Trials, Statistical Distributions, Computation
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Aydin, Mensure – Educational Research and Reviews, 2015
The purpose of the study is to explore the impact of chess instruction for visually impaired children on math achievement. The study group consists of a total of 26 visually impaired students from inclusion classes in inclusive secondary schools of MoNE (Ministry of National Education), 9 male and 5 female students in the experiment group and 8…
Descriptors: Foreign Countries, Inclusion, Visual Impairments, Secondary School Students
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Sullivan, Terri N.; Sutherland, Kevin S.; Farrell, Albert D.; Taylor, Katherine A. – Remedial and Special Education, 2015
The impact of a school-based violence prevention program, Second Step, on peer victimization and aggression, and emotion regulation was evaluated among 457 sixth graders. A cluster-randomized trial was conducted with classrooms randomly assigned to intervention (n = 14) or control (n = 14) conditions. A repeated measures analysis of covariance on…
Descriptors: Grade 6, Middle School Students, Violence, Prevention