A group of teachers receives access to the Internet as part of their participation in an experiment. The school district's administrators decide that this is a good idea, and provide Internet access for all teachers in the district, including control group teachers. The administrators' action weakens internal validity through
A) resentful demoralization of the control group.
B) compensatory equalization of treatments.
C) compensatory rivalry by the control group.
D) differential selection.
Correct Answer:
Verified
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