Would you electrocute a stranger if a scientist told you to? Most people say no. But in 1961, Stanley Milgram proved that 65% of people will administer potentially lethal electric shocks when ordered by an authority figure.
This experiment explained how ordinary Germans participated in the Holocaust—and it’s one of the most disturbing studies in psychology.
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🔬 The Setup
Cover story: “Study on learning and punishment”
Participants: 40 men (ages 20-50)
Roles:
- Teacher (real participant)
- Learner (actor, pretending to be shocked)
- Experimenter (authority figure in lab coat)
The task:
- Teacher asks questions
- Learner gives answers (from another room)
- Wrong answer = electric shock
- Shocks increase by 15 volts each time (15V → 450V)
Reality: No real shocks. Learner was acting.
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😱 What Happened
Shock levels:
- 15-120V: “Slight shock” to “Moderate shock”
- 135-300V: Learner protests, demands to stop
- 315V: Learner screams in agony
- 330V: Learner goes silent (appears unconscious or dead)
- 450V: Marked “XXX” (potentially lethal)
When teachers hesitated:
- Experimenter: “Please continue”
- “The experiment requires you to continue”
- “You have no choice, you must go on”
Results:
- 100% went to 300V (intense shock)
- 65% went to 450V (maximum, potentially lethal)
- Many showed extreme stress (sweating, trembling, nervous laughter)
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💡 Why People Obeyed
Factors:
1. Authority figure: Lab coat = legitimacy
2. Gradual escalation: Small steps to big harm
3. Diffusion of responsibility: “I’m just following orders”
4. Institutional setting: Yale University = trust
5. Lack of clear stopping point: No explicit permission to quit
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🌍 Variations
Milgram tested different scenarios:
Obedience decreased when:
- Experimenter left room (phone orders): 21%
- Experiment in office building (not Yale): 48%
- Teacher had to physically touch learner: 30%
Obedience increased when:
- Two experimenters giving orders: 92.5%
- Learner demanded more shocks: 0% (people refused!)
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🎯 Real-World Implications
Explains:
- Holocaust (ordinary people following orders)
- My Lai Massacre (Vietnam War)
- Abu Ghraib torture
- Corporate fraud (Enron, etc.)
- Police brutality
The banality of evil: Hannah Arendt’s concept—evil isn’t done by monsters, but by ordinary people following orders.
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⚠️ Ethical Concerns
Criticisms:
- Participants suffered psychological distress
- Deception (told shocks were real)
- Couldn’t truly consent (didn’t know what they’d be asked to do)
Modern ethics: Would not be approved today.
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The Milgram Experiment: proof that “I was just following orders” is a real psychological phenomenon!