Controlling Within-Subjects Designs Chastity wants to use complete counterbalancing with four treatment conditions in a within-subjects design.How many subjects will she need?
A)4
B)8
C)12
D)24

Question

Quizplus · Accepted Answer

With four treatment conditions in a within-subjects design using complete counterbalancing, the number of sequences needed is calculated as the factorial of the number of conditions (4!). This equals 4 x 3 x 2 x 1 = 24. Therefore, she will need at least 24 subjects to cover all possible sequences.

Controlling Within-Subjects Designs Chastity Wants to Use Complete Counterbalancing with Four