A type of contamination in experimental and quasi-experimental designs that occurs when control group members are aware that they are being denied some advantage and increase their efforts by way of compensation is ______.

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Compensatory rivalry, also known as the John Henry effect, occurs when members of a control group try harder during an experiment because they are aware that they are being denied some advantage, such as a treatment or intervention. This can lead to an overestimation of the treatment effect, as the control group's performance may be artificially inflated due to compensatory efforts.

A Type of Contamination in Experimental and Quasi-Experimental Designs That