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Publication Date: July 2007
Publisher: MDRC (Organization)
Author(s): Carolyn J. Hill; Howard S. Bloom; Alison Rebeck Black; Mark W. Lipsey
Research Area: Education
Keywords: Educational Interventions
Type: Report
Coverage: United States
Abstract:
No universal guideline exists for judging the practical importance of a standardized effect size, a measure of the magnitude of an intervention's effects. This working paper argues that effect sizes should be interpreted using empirical benchmarks — and presents three types in the context of education research.