r(equivalent): A Simple Effect Size Indicator

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r(equivalent): A Simple Effect Size Indicator

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dc.contributor.author Rubin, Donald B.
dc.contributor.author Rosenthal, Robert
dc.date.accessioned 2009-07-27T19:17:08Z
dc.date.issued 2003
dc.identifier.citation Rosenthal, Robert, and Donald B. Rubin. 2003. r(equivalent): A simple effect size indicator. Psychological Methods 8, no. 4: 492-496. en
dc.identifier.issn 1082-989X en
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:3199068
dc.description.abstract The purpose of this article is to propose a simple effect size estimate (obtained from the sample size, N, and a p value) that can be used (a) in meta-analytic research where only sample sizes and p values have been reported by the original investigator, (b) where no generally accepted effect size estimate exists, or (c) where directly computed effect size estimates are likely to be misleading. This effect size estimate is called r(equivalent) because it equals the sample point-biserial correlation between the treatment indicator and an exactly normally distributed outcome in a two-treatment experiment with N/2 units in each group and the obtained p value. As part of placing r(equivalent) into a broader context, the authors also address limitations of r(equivalent). en
dc.description.sponsorship Psychology en
dc.language.iso en_US en
dc.publisher American Psychological Association en
dc.relation.isversionof http://dx.doi.org/10.1037/1082-989X.8.4.492 en
dash.license LAA
dc.title r(equivalent): A Simple Effect Size Indicator en
dc.relation.journal Psychological Methods en
dash.depositing.author Rosenthal, Robert

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  • FAS Scholarly Articles [7219]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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