How do we test for moderation?
A)Look at the effect of the moderator variable in a regression in which the outcome is predicted from a predictor and the proposed moderator.
B)Look at the indirect effect of a predictor on an outcome variable via the proposed moderator.
C)Look at the reduction in the direct effect of a predictor on an outcome variable when the proposed moderator is also included.
D)Look at the interaction term in a regression in which the outcome variable is predicted from a predictor, the proposed moderator and their interaction.

Question

Quizplus · Accepted Answer

Testing for moderation involves checking for an interaction effect between the predictor variable and the proposed moderator. This is done by including both the predictor and the moderator variable as well as their interaction term in a regression model predicting the outcome variable. Option D suggests this exact approach, making it the best choice. Option A checks for the main effect of the moderator, not the interaction effect, and options B and C check for the mediating effect of the moderator, not the moderating effect.

How Do We Test for Moderation