Hawthorne Effect: https://en.wikipedia.org/wiki/Hawthorne_effect https://en.wikipedia.org/wiki/Hawthorne_effect In short iirc at first they thought the change

Hawthorne Effect: https://en.wikipedia.org/wiki/Hawthorne_effect https://en.wikipedia.org/wiki/Hawthorne_effect In short iirc at first they thought the changes they were making was what caused the increase in productivity but then they found out that the people worked harder because they were being observed and felt special.