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Definition of Hawthorne effect
1. Noun. An effect on a study due to a change, due to being observed, in the behavior of a subject being studied. ¹
¹ Source: wiktionary.com
Medical Definition of Hawthorne effect
1. The effect (usually positive or beneficial) of being under study, upon the persons being studied; their knowledge of the study often influences their behaviour. Origin: city in Illinois; site of the Western Electric plant (05 Mar 2000)