What social threat to internal validity occurs when the comparison group knows what the program group is getting,and instead of developing a rivalry,control group members become discouraged or angry and give up?
A)diffusion of treatment
B)compensatory rivalry
C)resentful demoralization
D)compensatory equalization

Question

Quizplus · Accepted Answer

Resentful demoralization occurs when members of the comparison group become discouraged or angry because they know what the program group is getting, leading them to give up on the study or outcome measures. This threatens the internal validity of the study because it is no longer clear if any differences between the program and comparison groups are due to the program itself or the negative effects on the comparison group.

What Social Threat to Internal Validity Occurs When the Comparison