Variables that are included because they are believed to have a significant contributory or contingent effect on the IV-DV relationship are called _____ variables.
A) criterion
B) predictor
C) mediator
D) moderator
E) extraneous

Question

Quizplus · Accepted Answer

Moderator variables are included in a study to identify whether the strength and direction of the relationship between the independent and dependent variables depends on the level of the moderator variable. The moderator variable can provide additional insights into the relationship between the IV and the DV.

Variables That Are Included Because They Are Believed to Have