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Download full textWolf, Rebecca – What Works Clearinghouse, 2021
The What Works Clearinghouse (WWC) seeks to provide practitioners information about "what works in education." One challenge in understanding "what works" is that effect sizes may not be comparable across studies, which limits the ability to compare the relative effectiveness of multiple interventions. One factor that…
Descriptors: Effect Size, Outcome Measures, Educational Research, Differences
