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Direct linkThompson, Bruce – Psychology in the Schools, 2007
The present article provides a primer on (a) effect sizes, (b) confidence intervals, and (c) confidence intervals for effect sizes. Additionally, various admonitions for reformed statistical practice are presented. For example, a very important implication of the realization that there are dozens of effect size statistics is that "authors must…
Descriptors: Intervals, Effect Size, Statistical Analysis, Statistical Significance
Peer reviewedKieffer, Kevin M.; Reese, Robert J.; Thompson, Bruce – Journal of Experimental Education, 2001
Investigated the patterns of statistical usage and reporting in 756 articles published in the "American Educational Research Journal" (AERJ) and the "Journal of Counseling Psychology" (JCP) over 10 years. Evaluated the analytic practices used. Also discusses changes that may be necessary to improve statistics in behavioral…
Descriptors: Educational Research, Psychological Studies, Research Methodology, Scholarly Journals
