These web pages provide tools for probing significant 2-way or 3-way interaction effects in multiple linear regression (MLR), latent curve analysis (LCA), and hierarchical linear modeling (HLM). It is necessary first to obtain output from an appropriately conducted analysis investigating an interaction effect using other software. General discussions on how to conduct these analyses can be found in the references listed at the bottom of each page. The primer on multiple linear regression contains a review of key concepts related to interaction effects in MLR.
All material on these pages not otherwise credited is ©2003 by Kristopher J. Preacher. Return to quantpsy.org Our thanks to the Carolina Structural Equation Modeling group (CSEM) |