doi: 10.3758/s13428-016-0827-9.
Mean centering, multicollinearity, and moderators in multiple regression: The reconciliation redux
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- PMID: 27800581
- DOI: 10.3758/s13428-016-0827-9
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Mean centering, multicollinearity, and moderators in multiple regression: The reconciliation redux
Behav Res Methods.
2017 Feb.
Abstract
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: Mean center; Moderated regression.
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