After the end of the Stanford Prison Experiment, Professor Zimbardo, the media, and the academic community all conducted a certain degree of follow-up investigation on this experiment that had a significant impact.
During 1971-1972, Zimbardo's team conducted preliminary follow-ups on the psychological state of the participants and found that some people still suffered from anxiety and insomnia issues, with a few volunteers even experiencing identity confusion, unable to break free from their "Prison Guard" or "Prisoner" roles.
From the 1980s to the 2000s, some prisoner volunteers and prison guard volunteers were interviewed in the public media, stating that they had a long history of psychological intervention and suffered from PTSD and other psychological disorders, openly criticizing this experiment.
