All of the following are advantages of within-groups designs EXCEPT:
A)Participants in the treatment/control groups will be equivalent.
B)It is less time-consuming for the participants.
C)It gives researchers more power to find differences between conditions.
D)They require fewer participants.

Question

Quizplus · Accepted Answer

Within-groups designs can actually take more time for participants because they are required to participate in all conditions of the study. This is in contrast to between-groups designs where participants are only in one condition. Therefore, option B is incorrect. The other three options are advantages of within-groups designs. Participants in the treatment/control groups will be equivalent because every participant experiences both the treatment and control conditions. This creates fewer variable factors that could influence the results of the study. Within-groups designs give researchers more power to find differences between conditions because they can examine how each participant's score changes from the first condition to the second. Moreover, it requires fewer participants because each participant contributes data to both conditions, maximizing each participant's usefulness.

All of the Following Are Advantages of Within-Groups Designs EXCEPT