Why are control groups included in experiments?
A)To determine whether two variables are correlated
B)To ascertain cause-and-effect relationships
C)To ensure that participant characteristics are essentially the same in each group
D)To translate the hypothesis into something testable

Question

Quizplus · Accepted Answer

Control groups are used to ascertain cause-and-effect relationships by providing a baseline to compare the effects of the experimental treatment.

Why Are Control Groups Included in Experiments