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Tipton, Elizabeth; Hallberg, Kelly; Hedges, Larry V.; Chan, Wendy – Society for Research on Educational Effectiveness, 2015
Policy-makers are frequently interested in understanding how effective a particular intervention may be for a specific (and often broad) population. In many fields, particularly education and social welfare, the ideal form of these evaluations is a large-scale randomized experiment. Recent research has highlighted that sites in these large-scale…
Descriptors: Generalization, Program Effectiveness, Sample Size, Computation