When comparing a between-subjects design with a repeated design,the between-subjects design will ____ powerful than the repeated design.
A)always be less
B)usually be less
C)always be more
D)usually be more

Question

Quizplus · Accepted Answer

A between-subjects design typically involves different groups of participants being assigned to each treatment condition, whereas a repeated design involves the same participants being exposed to each treatment condition. The between-subjects design can be less powerful because individual differences between participants can contribute to variability in the data, making it more difficult to detect a significant effect. However, the repeated design can be subject to order effects or practice effects, which can also contribute to variability and reduce power. Therefore, the answer is that the between-subjects design will usually be less powerful than the repeated design.

When Comparing a Between-Subjects Design with a Repeated Design,the Between-Subjects