Which of the following is an advantage of within-subjects designs?
A) Fewer research participants are needed.
B) Attrition can't happen.
C) Testing effects don't happen.
D) Instrumentation isn't needed.

Question

Quizplus · Accepted Answer

Within-subjects designs require fewer participants because the same group of participants is exposed to all conditions or treatments, eliminating the need for a separate control group. This contrasts with between-subjects designs, where different groups are needed for each condition, increasing the total number of participants required.

Which of the Following Is an Advantage of Within-Subjects Designs