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Theory & Psychology
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Statistical Significance Tests, Effect Size Reporting and the Vain Pursuit of Pseudo-Objectivity

Bruce Thompson

Texas A&M University and Baylor College of Medicine

Two themes are argued in this comment on the use of statistical significance tests. First, effect sizes are an important aspect of results that should be reported. However, 10 empirical studies (some of several different journals) of articles in various disciplines demonstrate that effect sizes are still not usually being reported, notwithstanding the admonitions of the 1994 American Psychological Association (APA) Publication Manual. Second, using statistical significance tests does not (and cannot) make scientists (or their science) objective.

Key Words: effect size • replication • statistical significance

Theory & Psychology, Vol. 9, No. 2, 191-196 (1999)
DOI: 10.1177/095935439992007
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