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Verifying the Accuracy of Statistical Significance Testing in Campbell Collaboration Systematic Reviews through the Use of the R Package statcheck
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Description: The purpose of this project is to elucidate statistical significance testing in meta-analysis. Specially, we conducted this project with five primary goals in mind: 1. To examine how meta-analytic statistical significance tests are reported and discussed in Campbell Collaboration reviews. 2. To modify the R package statcheck (Epskamp & Nuijten, 2016) to automatically extract statistical significance tests reported “in-text” by meta-analysis authors. 3. To evaluate the accuracy of statistical significance tests reported in published Campbell Collaboration reviews using the adapted statcheck package. 4. To compare (a) the frequency of APA reported statistical significance tests in reviews conducted across multiple research fields and (b) the accuracy of these reported tests using the adapted statcheck package (Campbell reviews, Education and Psychology reviews, and interdisciplinary reviews about IQ and intelligence). 5. To create a Campbell Collaboration Editorial Brief to guide review authors on how to report statistical significance tests “in-text” and to provide a tutorial for using the browser-based statcheck program at http://statcheck.io.