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VanDerHeyden, Amanda M.; Codding, Robin S. – School Psychology Review, 2015
The current article presents additional analyses of a classwide mathematics intervention, from a previously reported randomized controlled trial, to offer new information about the treatment and to demonstrate the utility of different types of effect sizes. Multilevel modeling was used to examine treatment effects by race, sex, socioeconomic…
Descriptors: Intervention, Mathematics Instruction, Randomized Controlled Trials, Effect Size