Why are control groups included in experiments?
A)to determine whether two variables are related
B)to ascertain cause-and-effect relationships
C)to ensure that participant characteristics are essentially the same in each group
D)to ensure the inclusion of confounding variables

Question

Quizplus · Accepted Answer

Control groups are included in experiments primarily to ascertain cause-and-effect relationships by providing a baseline against which the effects of the experimental manipulation can be compared.

Why Are Control Groups Included in Experiments