Question

An interaction occurs whenever

Select one:
a. the manipulation check indicates a manipulation failure.
b. the effect of one independent variable changes across levels of a second independent variable.
c. both independent variables have an effect.
d. the dependent variable is effectively manipulated in a factorial design.

Answer 1

B. The effect of one independent variable changes across levels of a second independent variable.

Step-by-step explanation:

Two variables interact when the effect of greater than or equal to two variables is not simply additive or the effect of one of the variables differs depending upon the level of other variables.Hence we conclude that the answer is option B.