A close consideration of effect sizes reviewed by Jussim (2012).
This commentary on Jussim (2012) makes two points: (1) Effect sizes often reflect artifacts of experimental design rather than real-world relevance, and (2) any argument dependent on effect sizes must correct for attenuation due to instrument reliabilities. A formula for making this correction is presented, and its ramifications on the debate over accuracy in person perception are discussed.
Department of Psychology,New Mexico State University,Las Cruces,NM 88003-8001.dtrafimo@nmsu.eduyraut@nmsu.eduhttp://psych.nmsu.edu/faculty/trafimow/.
David
D
Trafimow
Department of Psychology,New Mexico State University,Las Cruces,NM 88003-8001.dtrafimo@nmsu.eduyraut@nmsu.eduhttp://psych.nmsu.edu/faculty/trafimow/.
Yogesh J
YJ
Raut
D016477:Artifacts; D049268:Positron-Emission Tomography; D012938:Social Perception