Calculating and Reporting Effect Sizes to Facilitate Cumulative Science: A Practical Primer for t-tests and ANOVAs

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Description: Effect sizes can be used to determine the sample size for follow-up studies, or examining effects across studies. This project aims to provide a practical primer on how to calculate and report effect sizes for t-tests and ANOVA’s such that effect sizes can be used in a-priori power analyses and meta-analyses. A supplementary spreadsheet is provided to make it as easy as possible for researchers to incorporate effect size calculations into their workflow.

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I've updated the unbiased effect size calculation for within designs to match recommendations by Cumming (2012) I've added an effect size conversion spreadsheet (From_R2D2) to the files section. See this blog post for more information. This article is now in press at Frontiers in Cognition. It's Open Access, and you can download it here: http://www.frontiersin.org/Journal/Abstract.aspx?s=194&name..;.

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