An interaction effect in a two-way factorial research design:
A)is the effect of one variable, ignoring the influence of other variables
B)occurs when the influence of one variable changes according to the level of another variable
C)almost never occurs when more than one variable is considered at a time
D)is rare in a well-designed study, and usually indicates some error in computation

Question

Quizplus · Accepted Answer

An interaction effect occurs when the influence of one variable changes according to the level of another variable. This means that the two variables are not operating independently of each other and there is a complex relationship between them. It is common in a two-way factorial research design and is not indicative of an error in computation.

An Interaction Effect in a Two-Way Factorial Research Design