Answer:
Ethical concerns were raised about Stanley Milgram's experiment on obedience to authority, which was conducted in the 1960s. Specifically, questions were raised about whether he had taken adequate measures to protect participants from physical and psychological harm.
In terms of physical harm, Milgram's study participants were not at significant risk. They were exposed to no more than mild stress related to the experiment, despite some participants experiencing significant levels of distress. The shocks administered in the experiment were not real, and the participant sitting at the other end of the phone line was a confederate of the experimenter, not an actual subject.
However, the study did have the potential to cause significant psychological harm. The participants were deceived, lied to, and misled about the true nature of the experiment. They were made to believe that they were administering
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