How can variance be reduced in a between-subjects design?
A)Use counterbalancing.
B)Use a factorial design adding a participant variable (such as age) as a second factor.
C)Use a factorial design with the order of treatments as a second factor
D)Reduce the strength of the treatment.

Question

How can variance be reduced in a between-subjects design?​
A)​Use counterbalancing.
B)​Use a factorial design adding a participant variable (such as age) as a second factor.
C)Use a factorial design with the order of treatments as a second factor
D)​Reduce the strength of the treatment.

Quizplus · Accepted Answer

Using a factorial design by adding a participant variable as a second factor can help control for individual differences, thereby reducing variance in a between-subjects design.

How Can Variance Be Reduced in a Between-Subjects Design?​

How Can Variance Be Reduced in a Between-Subjects Design?