In comparison to a random-groups factorial design,the use of a complex within-subjects design:
A) requires more measures per subject
B) requires a greater number of subjects
C) is more likely to confound individual differences and treatment conditions
D) is much less efficient

Question

Quizplus · Accepted Answer

Within-subjects designs require more measures per subject because each participant is exposed to all levels of the independent variable, unlike in random-groups factorial designs where each participant is typically exposed to only one level of each independent variable.

In Comparison to a Random-Groups Factorial Design,the Use of a Complex