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What Works for Whom: Subgroup Effects, Compositional Effects, and so Much Treatment Heterogeneity
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Betsy Wolf – Society for Research on Educational Effectiveness, 2024
Introduction: The What Works Clearinghouse (WWC) reviews rigorous research on educational interventions with a goal of identifying "what works" and making that information accessible to educators and policymakers. The WWC has historically prioritized internal validity over external validity in rating the quality of research. One critique…
Descriptors: Educational Assessment, Educational Research, Validity, Research Utilization