I didn’t find any mentioned of the well studied Hawthorne effect known since the 1920s or so. It describes the psychological phenomenon where people improve th

I didn’t find any mentioned of the well studied Hawthorne effect known since the 1920s or so. It describes the psychological phenomenon where people improve their social behavior simply because they know they are being observed, for example washing their hands. If I had to guess I’d say they observed exactly this. But they don’t mention it. Reference: https://en.wikipedia.org/wiki/Hawthorne_effect https://en.wikipedia.org/wiki/Hawthorne_effect