Hawthorn Effect is right although it is disputed [1]. Interestingly, the interpretation that I remember is that productivity increased because the subjects were

Hawthorn Effect is right although it is disputed [1]. Interestingly, the interpretation that I remember is that productivity increased because the subjects were part of an experiment and being observed. [1] https://en.wikipedia.org/wiki/Hawthorne_effect https://en.wikipedia.org/wiki/Hawthorne_effect