The main disadvantage of a counterbalanced design is the lack of control for
A) carry-over effect of treatment.
B) internal validity.
C) preexisting differences.
D) pretest sensitization.

Question

Quizplus · Accepted Answer

The main disadvantage of a counterbalanced design is the lack of control for carry-over effects of treatment. This occurs when the effects of one treatment persist or influence the response to subsequent treatments, which can confound the results.

The Main Disadvantage of a Counterbalanced Design Is the Lack