A major disadvantage of between-subjects designs is that:
A) the effects of one treatment may alter another
B) subject differences may obscure treatment effects
C) one must use fewer independent variables
D) subject variables (such as age and sex)cannot be studied

Question

Quizplus · Accepted Answer

Between-subjects designs involve different groups of participants for each condition, which can lead to variability in participant characteristics. This variability can obscure the effects of the treatment because differences in outcomes may be due to participant differences rather than the treatment itself.

A Major Disadvantage of Between-Subjects Designs Is That