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Allen, Chiharu S.; Chen, Qi; Willson, Victor L.; Hughes, Jan N. – Educational Evaluation and Policy Analysis, 2009
The present meta-analysis examines the effect of grade retention on academic outcomes and investigates systemic sources of variability in effect sizes. Using multilevel modeling (MLM), the authors investigate characteristics of 207 effect sizes across 22 studies published between 1990 and 2007 at two levels: the study (between) and individual…
Descriptors: Research Design, Grade Repetition, Academic Achievement, Effect Size

St. Pierre, Robert G. – Educational Evaluation and Policy Analysis, 1979
A model is described which illustrates two general uses of multiple analyses to evaluate quasi-experiments: obtaining estimates of the treatment effect, and checking the validity of the experiment. (MH)
Descriptors: Data Analysis, Evaluation Methods, Literature Reviews, Models