Milgram's experiment raised several important questions regarding researchers' responsibilities toward participants. Laws today protect research participants in several ways from unnecessary distress. What was the harmful aspect of Milgram's study?
1. The shock being delivered to the learner was acutely painful.
2. The intense stress experienced by participants might have had lasting consequences.
3. Milgram and his assistants took notes on participants' emotional state during the experiment.
4. Milgram had a research assistant pose as a participant in the experiment.