What types of designs are normally preferred to reduce variability by reducing individual differences?
A) between-groups designs
B) post hoc designs
C) within-groups designs
D) correlational designs

Question

Quizplus · Accepted Answer

Within-groups designs are preferred for reducing individual differences because all participants are exposed to the same conditions, eliminating any individual differences that might influence the results. This helps to increase the internal validity of the study.

What Types of Designs Are Normally Preferred to Reduce Variability