On Using Regression Coefficients to Interpret Moderator Effects
- 1 June 1990
- journal article
- Published by SAGE Publications in Educational and Psychological Measurement
- Vol. 50 (2), 255-263
- https://doi.org/10.1177/0013164490502003
Abstract
In moderated multiple regression analysis, several researchers have relied totally or partially on the sign associated with the regression weight of the cross-product term xz to interpret a moderator effect. This study examined a common convention used in such interpretations. First through logical exposition, and then through the use of a Monte Carlo approach to simulate various moderator conditions, it was found that this convention may lead to incorrect inferences regarding interaction effects. Alternative procedures for interpreting moderator effects are recommended.Keywords
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