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A close consideration of effect sizes reviewed by Jussim (2012)

Published online by Cambridge University Press:  22 March 2017

David Trafimow  and
Yogesh J. Raut
David Trafimow
Affiliation:
Department of Psychology, New Mexico State University, Las Cruces, NM 88003-8001. dtrafimo@nmsu.eduyraut@nmsu.eduhttp://psych.nmsu.edu/faculty/trafimow/
Yogesh J. Raut
Affiliation:
Department of Psychology, New Mexico State University, Las Cruces, NM 88003-8001. dtrafimo@nmsu.eduyraut@nmsu.eduhttp://psych.nmsu.edu/faculty/trafimow/
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Abstract

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.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 40 , 2017 , e15
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Copyright
Copyright © Cambridge University Press 2017 

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