Which of the following statements regarding main effects if incorrect?
A)to examine main effects, you ignore other IVs
B)to examine main effects, you collapse across other IVs
C)to examine main effects, you must examine each IV separately
D)to examine main effects, you examine all IVs at once

Question

Quizplus · Accepted Answer

Main effects refer to the individual effect of each independent variable (IV) on the dependent variable, ignoring or collapsing across levels of other IVs. Therefore, examining all IVs at once would not be a method to assess main effects, but rather an approach to assess interaction effects.

Which of the Following Statements Regarding Main Effects If Incorrect