Hawthorne effect is stranger than it sounds.

The Hawthorne effect is a type of behavioral reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed.

The Hawthorne effect is a type of behavioral reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed. The effect was discovered in the context of research conducted at the Hawthorne Western Electric plant; however, some scholars think the descriptions are fictitious.