Journal
JOURNAL OF CONSUMER PSYCHOLOGY
Volume 22, Issue 4, Pages 600-602Publisher
JOHN WILEY & SONS LTD
DOI: 10.1016/j.jcps.2012.03.009
Keywords
Mediation; Indirect effects; Categorial data analysis
Categories
Funding
- NIDA NIH HHS [R37 DA009757, R01 DA009757] Funding Source: Medline
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The commentary discusses several topics in Dr. Iacobucci's article on mediation analysis with categorical variables including the lack of equivalency of mediated effect measures, ab, and c-c', that are algebraically equivalent in ordinary least squares regression models. The commentary raises the issue of correlated mediation coefficients and presents formulas to include the correlation in the test of significance. References to new developments in causal mediation analysis for categorical variables are given and the importance of programs of research to establish a mediation theory is emphasized. (C) 2012 Society for Consumer Psychology. Published by Elsevier Inc. All rights reserved.
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