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A Comparison of Methods to Test Mediation and Other Intervening Variable Effects

A Comparison of Methods to Test Mediation and Other Intervening Variable Effects A Monte Carlo study compared 14 methods to test the statisticalsignificance of the intervening variable effect. An interveningvariable (mediator) transmits the effect of an independent variableto a dependent variable. The commonly usedR. M. Baron and D. A. Kenny (1986) approach has lowstatistical power. Two methods based on the distribution of theproduct and 2 difference-in-coefficients methods have the mostaccurate Type I error rates and greatest statistical power except in 1important case in which Type I error rates are too high. The bestbalance of Type I error and statistical power across all cases is the test ofthe joint significance of the two effects comprising the intervening variableeffect. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychological Methods American Psychological Association

A Comparison of Methods to Test Mediation and Other Intervening Variable Effects

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References (59)

Publisher
American Psychological Association
Copyright
Copyright © 2002 American Psychological Association
ISSN
1082-989x
eISSN
1939-1463
DOI
10.1037/1082-989X.7.1.83
Publisher site
See Article on Publisher Site

Abstract

A Monte Carlo study compared 14 methods to test the statisticalsignificance of the intervening variable effect. An interveningvariable (mediator) transmits the effect of an independent variableto a dependent variable. The commonly usedR. M. Baron and D. A. Kenny (1986) approach has lowstatistical power. Two methods based on the distribution of theproduct and 2 difference-in-coefficients methods have the mostaccurate Type I error rates and greatest statistical power except in 1important case in which Type I error rates are too high. The bestbalance of Type I error and statistical power across all cases is the test ofthe joint significance of the two effects comprising the intervening variableeffect.

Journal

Psychological MethodsAmerican Psychological Association

Published: Mar 1, 2002

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