Meta-analysis of raw mean differences |
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| Authors: | Bond Charles F Wiitala Wyndy L Richard F Dan |
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| Institution: | Department of Psychology, Texas Christian University, Fort Worth, TX 76129, USA. c.bond@tcu.edu |
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| Abstract: | This article discusses the meta-analysis of raw mean differences. It presents a rationale for cumulating psychological effects in a raw metric and compares raw mean differences to standardized mean differences. Some limitations of standardization are noted, and statistical techniques for raw meta-analysis are described. These include a graphical device for decomposing effect sizes. Several illustrative data sets are analyzed. |
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