Within-subjects designs are most useful when:
A) subject differences contribute heavily to variation in the dependent variable.
B) carryover effects are large.
C) carryover effects vary unpredictably.
D) subject differences do not significantly affect the value of the dependent variable.

Question

Quizplus · Accepted Answer

Within-subjects designs are most useful when subject differences contribute heavily to variation in the dependent variable because this design controls for these differences by using the same subjects across all conditions.

Within-Subjects Designs Are Most Useful When