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06/12/1981 The man who studied loneliness dies

6:08

Harlow's Studies on Dependency in Monkeys

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Harlow's Monkeys

American psychologist Harry Harlow is best known for his unethical experiments with rhesus macaques. He separated new-born monkeys from their mothers and gave them substitute made from mesh or cloth providing warmth and food. When the monkeys grew up, they exhibited strange behavior. Some of them injured their young or even killed them.