Bill is studying how individuals' ability to concentrate is affected by both music type (pop vs. classical) and volume (soft vs. loud). If he finds that music type influences concentration, this will be referred to as ______.
A) interaction
B) factorial effect
C) main effect
D) absence of interaction effect

Question

Quizplus · Accepted Answer

The effect of music type on concentration is referred to as a main effect. A main effect refers to the effect of one independent variable on the dependent variable, regardless of the levels of the other independent variable.

Bill Is Studying How Individuals' Ability to Concentrate Is Affected