In a causal-comparative study, comparison groups:
A) are set up by the researcher
B) are already in existence
C) are obtained by random assignment
D) cannot exceed three in number

Question

Quizplus · Accepted Answer

In a causal-comparative study, the comparison groups are already in existence. The researcher does not set them up or obtain them through random assignment; instead, they study differences between groups that naturally occur.

In a Causal-Comparative Study, Comparison Groups