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Milgram’s Shocking Obedience Experiments

Milgram’s Shocking Obedience Experiments

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The Milgram experiment focused on the power of obedience to authority. There have been many controversial psychological experiments in psychology history, including Milgram’s classic obedience experiment.

The experiment was considered so controversial, in fact, that most assume that such a study could never be carried out today thanks to ethical guidelines, institutional review boards, and concern for participant welfare. Yet Milgram’s experiment and results have been replicated several times in recent years.

What Was the Milgram Experiment?

In Milgram’s original experiments conducted during the 1960s, participants were asked to deliver electrical shocks to a “learner” whenever an incorrect answer was given. In reality, the learner was actually a confederate in the experiment who pretended to be shocked.

The purpose of the experiment was to determine how far people were willing to go to obey the commands of an authority figure.

Milgram found that 65% of participants were willing to deliver the maximum level of shocks even though the learner seemed to be in serious distress or unconscious.

Recreating Milgram’s Famous Experiment

Recently, Jerry Burger, a psychology professor at Santa Clara University, replicated Milgram’s famous study with some modifications to address the ethical concerns of the study. The challenge, Burger explained, was to develop a version of Milgram’s procedures that still provided useful comparisons to the original study without posing risk to the participants’ well-being.

Why do Milgram’s experiments remain so relevant and important today? Burger explained in an issue of the APS Observer:

“The haunting black-and-white images of ordinary citizens delivering what appear to be dangerous, if not deadly, electric shocks and the implications of the findings for atrocities like the Holocaust and Abu Ghraib are not easily dismissed. Yet because Milgram’s procedures are clearly out-of-bounds by today’s ethical standards, many questions about the research have gone unanswered. Chief among these is one that inevitably surfaces when I present Milgram’s findings to students: Would people still act that way today?”

How the Experiment Differed

Initially, Burger believed that replicating Milgram’s study simply wasn’t possible. To deal with the ethical concerns over the research, he made several alterations to the original experiment. First, the maximum shock level was only 150 volts, much lower than the 450 volts Milgram used in his experiments. The researcher also carefully screened the participants to eliminate anyone who might have negative reactions to the study.

Participants were asked if they had ever been diagnosed with a psychiatric disorder, experienced trauma, suffered from stress-affected medical conditions, had problems with drugs or alcohol, or took any medications for emotional difficulties. Those who responded yes to these conditions were dropped from the study. The remaining candidates then completed measures of depression and anxiety before being screened by a licensed clinical psychologist.

After carefully screening the participants, the remaining subjects were repeatedly told that they could quit the study at any time and still receive the $50 they were promised for participating. With the subject’s consent, each participant received a very mild, 15-volt electrical shock. Following the experiment, participants were quickly debriefed and told that the “learner” was simply pretending and had never really received any electrical shocks. Finally, the experimenter was also a licensed clinical psychologist who ended any sessions where undue stress or anxiety was observed.

Results of the Modern Milgram Experiment

The results of the new experiment revealed that participants obeyed at the same rate that they did when Milgram conducted his original study more than 40 years ago. The research remains controversial, but Burger has suggested that much can be gained by further exploring the remaining questions in this area using his modified 150-volt procedures.

Image: Image: Will Lion (CC BY-NC-ND 2.0)


Burger J. Replicating Milgram: would people still obey today? American Psychologist. 2009;64(1):1-11. doi:10.1037/a0010932

Elms AC. Obedience lite. American Psychologist. 2009;64(1):32-36. doi:10.1037/a0014473

Miller AG. Reflections on “Replicating Milgram” (Burger, 2009). Am Psychol. 2009 Jan;64(1):20-7. doi: 10.1037/a0014407