What social threat to internal validity occurs because a comparison group learns about the program either directly or indirectly from program group participants?
A)diffusion of treatment
B)compensatory rivalry
C)resentful demoralization
D)compensatory equalization

Question

Quizplus · Accepted Answer

This occurs when the comparison group becomes aware of the program and receives some form of treatment, possibly diluting the effects of the program and affecting the internal validity of the study.

What Social Threat to Internal Validity Occurs Because a Comparison