For an experiment that compares two treatment conditions with ten scores in each treatment,which design would require fewer subjects?
A)between-subjects
B)within-subjects
C)matched-subjects
D)all would require the same number of subjects.

Question

Quizplus · Accepted Answer

Within-subjects design would require fewer subjects as it involves the same group of participants being exposed to both treatment conditions, thus reducing the need for a large sample size. This design also increases power and reduces error variance compared to other designs.

For an Experiment That Compares Two Treatment Conditions with Ten