Suppose the effect of testosterone on aggression differs according to a third variable, age. What is the problem with this scenario in multiple regression analysis?
A) The independent variables have an interactive relationship.
B) The independent variables have additive effects.
C) The independent variables are heteroskedastic.
D) The independent variables are uncorrelated with one another.

Question

Quizplus · Accepted Answer

The problem described is an interaction effect, where the relationship between testosterone and aggression changes depending on the level of a third variable, age. This indicates an interactive relationship between the independent variables.

Suppose the Effect of Testosterone on Aggression Differs According to a Third