How it worked
In 1961, Yale recruited volunteers through a newspaper ad for a “memory study.” Ordinary people came: salespeople, engineers, workers. Each was assigned the role of teacher. She read out word pairs and gave the learner an electric shock for mistakes, increasing the voltage each time.
There were 30 switches, from 15 volts to 450. The final ones were labeled “Danger: Severe Shock,” and the very last ones had simply three Xs.
The learner was an actor, and the shocks were fake, but the teacher did not know that. From behind a wall, she first heard protests, then pleas to stop, then cries about a bad heart. And after 330 volts - silence.
26 out of 40 participants reached the final switch - nearly 7 out of 10
Four phrases that decided everything
The experimenter did not threaten, persuade, or promise anything. He had 4 lines, which he delivered in strict order each time the teacher tried to stop.
Please continue. in an even voice, without pressure
The experiment requires that you continue. responsibility shifts to the procedure
It is absolutely essential that you continue. refusing starts to look like disrupting a shared task
You have no other choice. the final line - after it, the experiment was stopped
None of these phrases is about the shock or the learner. All 4 are about who is responsible for what is happening. As soon as responsibility shifted to the person in the lab coat, pressing the switch became easier.
That is the experiment's main finding. Obedience is driven not by fear of punishment, but by a redistribution of responsibility: I am not causing pain, I am following a procedure, and the person running it is responsible for the procedure.
Ordinary people, simply doing their jobs and without any personal hostility, can become participants in a terrible destructive process.
What retellings usually leave out
The experiment is often retold as “people turned out to be villains.” The recordings say otherwise. Participants argued, sweated, laughed nervously, stood up, demanded that the learner be checked - and still returned to the switch. Obedience came hard to them, but it came.
It also matters that the figure is not fixed. When the experimenter sat in the next room and gave instructions by phone, the share who went to the end dropped severalfold. When 2 “colleagues” who refused to continue were added, almost everyone stopped too. The setting mattered more than personality.
The experiment was partially replicated in 2009 with ethical limits and produced a comparable result. Criticism concerns the method, participant selection, and how Milgram reported the experiment's variations, but the effect of obedience to authority itself has been replicated
Today, no ethics committee would approve such an experiment: participants went home after several hours of real terror. Replications have to stop at 150 volts - the very point after which almost everyone who did not stop went all the way.
Why did it become easier for people to press the switch?
What can help you resist a questionable demand?
Sources
- Stanley Milgram, Yale, 1961-1963. Partial replication - Jerry Burger, 2009
Next in the “Manipulation” series
3 articles in full on the site, 4 more in the app
