Killer ape theory

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The killer ape theory or killer ape hypothesis is the theory that war and interpersonal aggression was the driving force behind human evolution. It was originated by Raymond Dart in his 1953 article "The predatory transition from ape to man"; it was developed further in African Genesis by Robert Ardrey in 1961. The theory gained notoriety for suggesting that the urge to violence was a fundamental part of human psychology. It is associated with the hunting hypothesis, also developed by Ardrey. According to the theory, the ancestors of humans were distinguished from other primate species by their greater aggressiveness, and this aggression is the source of humanity's murderous instincts. However, subsequent research has shown that both chimpanzees and bonobos may exhibit aggressive behaviour over 100 times more often than humans.

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