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Article: Effect Sizes and "What If" Analyses as Supplements to Statistical Significance Tests
- Article from:
- Journal of Early Intervention
- Article date:
- July 1, 2003
- Author:
CopyrightCopyright Council for Exceptional Children. Division of Early Childhood Summer 2003. Provided by ProQuest LLC. (Hide copyright information)
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As shortcomings of traditional statistical significance testing have been highlighted, calls have been heard within the research community for alternative or supplemental analyses that reflect the practical significance of test results and the role of sample size in the interpretation of results. Effect size reporting, which is designed to reflect on the practical value of results, is now required by 23 journals, including the flagship journals of the American Counseling Association, the Council for Exceptional Children, and several American Psychological Association journals. "What-if" analyses, though less well established, offer a method for reflecting on the role of sample size in the ...