Psychologists From The United States

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April 10, 2026

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"The Milgram experiments asked participants to play the role of a “teacher,” who was responsible for administering electric shocks to a “learner” when the learner failed to answer test questions correctly. The participants were not aware that the learner was working with the experimenters and did not actually receive any shocks. As the learners failed more and more, the teachers were instructed to increase the voltage intensity of the shocks — even when the learners started screaming, pleading to have the shocks stop, and eventually stopped responding altogether. Pressed by the experimenters — serious looking men in lab coats, who said they’d assume responsibility for the consequences — most participants did not stop administering shocks until they reached 300 volts or above — already in the lethal range. The majority of teachers delivered the maximum shock of 450 volts. We all like to think that the line between good and evil is impermeable — that people who do terrible things, such as commit murder, treason, or kidnapping, are on the evil side of this line, and the rest of us could never cross it. But the Stanford Prison Experiment and the Milgram studies revealed the permeability of that line. Some people are on the good side only because situations have never coerced or seduced them to cross over."

- Stanley Milgram

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"People who had damage to the right cerebral hemisphere were unable to recognise simple patterns, or enjoy music, but they could still speak normally. People with left-brain damage were able to recognise patterns, but their speech was impaired. Obviously, then, the left deals with language, and you would expect a split-brain patient to be unable to read with his right eye (connected, remember, to the opposite side of the brain). Sperry's patient was also unable to write anything meaningful (i.e., complicated) with his left hand. They noticed another oddity. if the patient bumped into something with his left side, he did not notice. And the implications were very odd indeed. Not only did the split-brain operation give the patient two separate minds; it also seemed to restrict his identity, or ego, to the left side. When they placed an object in his left hand, and asked him what he was holding, he had no idea. Further experiments underlined the point. If a split-brain patient is shown two different symbols -- say a circle and a square -- with each eye, and is asked to say what he has just seen, he replies, 'A square'. Asked to draw with his left hand what he has seen, and he draws a circle. Asked what he has just drawn, he replies: 'A square'. And when one split-brain patient was shown a picture of a nude male with the right-brain, she blushed; asked why she was blushing, she replied truthfully: 'I don't know'. The implications are clearly staggering. The person you call 'you' lives in the left side of your brain. And a few centimeters away there is another person, a completely independent identity. Where language is concerned, this other person is almost an imbecile. In other respects, he is more competent than the inhabitant of the left-brain; for example, he can make a far more accurate perspective drawing of a house. In effect, the left-brain person is a scientist, the right-brain an artist."

- Roger Wolcott Sperry

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