Multiple Choice
As a longitudinal experiment,Juan worked with two different groups,one who was receiving a special stress-reduction training,and another who was not.These two groups were matched together on important variables,and a pretest and posttest were both performed.However,he noticed that after sessions the individuals in the stress-reduction training were telling those in the control group about what they did each day.What form of internal invalidity is this?
A) compensation
B) compensatory rivalry
C) diffusion or imitation of treatments
D) demoralization
E) history
Correct Answer:
Verified
Correct Answer:
Verified
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