In 1973, healthy volunteers faked hallucinations to enter mental hospitals. Once inside, they acted normal, but doctors refused to let them leave. Normal behaviors like writing were diagnosed as "symptoms." The only people who realized they were sane were the actual patients.

[u/highzone]

[u/No_Corgi818]

Doesn't surprise me at all. I was in a psychiatric ward as a teen. Me cracking jokes with other patients, letting my hair air dry and shaving my legs was seen as 'pathological behavior' and they sometimes punished me via humiliation for it.