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Two Replicable Suppressor Situations in Personality Research

Abstract-
Suppressor situations occur when the simultaneous inclusion of two predictors improves one
or both validities. A common allegation is that suppressor effects rarely replicate and have little
substantive import. We present substantive examples from two established research domains
to counter this skepticism. In the first domain, we show how measures of guilt and shame act
consistently as mutual suppressors: Adding shame into a regression equation increases the
negative association between guilt and aggression, whereas adding guilt increases the positive
association between shame and aggression. In the second domain, we show how the effects of
self-esteem and narcissism operate consistently as mutual suppressors: That is, adding
narcissism into a regression equation increases the negative association between self-esteem and
antisocial behavior, whereas adding self-esteem increases the positive association between
narcissism and antisocial behavior. Discussion addresses the different implications for
suppressors in theoretical and variable selection applications.
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Paulhus.Robins.Trzesniewski.Tracy_2004.pdf
(169k)
Dr. Kali Trzesniewski,
Nov 1, 2011, 5:00 PM
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