The Hawthorne effect was first reported by researchers in a series of experiments conducted at the Western Electric Hawthorne Works plant in Cicero, Illinois, between 1924 and 1932. The initial reports were published by Elton Mayo and his colleagues.

The Hawthorne effect

hawthorne effect

The Hawthorne effect is a phenomenon where individuals modify their behavior when they are aware of being studied or observed. This can result in changes in performance or behavior that are not necessarily reflective of the individual's typical actions. It was named after studies conducted at the Western Electric Hawthorne Works plant in the 1920s and 1930s.

By not telling the people what are you study is for,