hawthorne-effect

Hawthorne effect

noun Psychology.
a positive change in the performance of a group of persons taking part in an experiment or study due to their perception of being singled out for special consideration.

Origin:
1960–65; after the Hawthorne Works of the Western Electric Company, Cicero, Ill., where such an effect was observed in experiments

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Hawthorne effect (ˈhɔːˌθɔːn)
 
n
iatrogenic Compare placebo effect improvement in the performance of employees, students, etc, brought about by making changes in working methods, resulting from research into means of improving performance
 
[from the Western Electric Company's Hawthorne works in Chicago, USA, where it was discovered during experiments in the 1920s]

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