Hallway Hypothesis (Full Episode) | The Stanford Prison Experiment: Unlocking the Truth | Nat Geo

Introducing one of history’s most notorious psychological experiments—but with a twist. The study’s prisoner and guard participants take a seat in front of the camera to reveal never-before-heard details of an event that has shaped our understanding of human nature and good versus evil for the past 50 years. Together, they track the key events that took place over the six fateful days in 1971.

Courtesy of National Geographic on YouTube. Watch on YouTube ↗

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