If there is a caffeine and exercise interaction, which of thefollowing is not necessarily correct
A) there are main effects for both caffeine and exercise
B) the effect of caffeine depends on the level of exercise
C) the effect of exercise depends on the level of caffeine
D) the simple main effect of exercise in one caffeine condition is different from the simple main effect of exercise in the other caffeine condition

Question

Quizplus · Accepted Answer

An interaction between caffeine and exercise does not necessarily imply that there are main effects for both caffeine and exercise. Main effects refer to the independent impact of each factor, while an interaction indicates that the effect of one factor depends on the level of the other.

If There Is a Caffeine and Exercise Interaction, Which of Thefollowing