Mean Centering, Multicollinearity, and Moderators in Multiple Regression: The Reconciliation Redux
Behavior Research Methods, 49, 403-404 (2017)
4 Pages Posted: 29 Jul 2019
Date Written: 2017
In this article, we attempt to clarify our statements regarding the effects of mean centering. In a multiple regression with predictors A, B, and A × B (where A × B serves as an interaction term), mean centering A and B prior to computing the product term can clarify the regression coefficients (which is good) and the overall model fit R2 will remain undisturbed (which is also good).
Keywords: moderated regression, mean center
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