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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 the 1950s; later it was developed further in ''African Genesis'' by Robert Ardrey in 1961. According to the theory, the ancestors of humans were distinguished from other primate species by their greater aggressiveness and this aggression remains within humanity, which retains many murderous instincts. The theory gained notoriety for suggesting that the urge to do violence was a fundamental part of human psychology. The hunting hypothesis is often associated with the theory, because of similarities and because Robert Ardrey has developed both. ==Definition== The expression ''killer ape'' does not mean an outstanding aggressive kind of ape; in fact the term refers to anthropological analysis of human aggression. It is scrutinized whether present-day behavior like e.g. the defense of one’s own piece of land, palpability or even murder base on ancestors of humankind. Accordingly, the killer ape is a notably belligerent species on which our instincts might be rooted, because this very ancestor could establish itself due to its special aggression. As founder of this thesis, Raymond A. Dart (1893–1988) dealt with this issue in his professional article ''The predatory transition from ape to man'', 1953. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Killer ape theory」の詳細全文を読む スポンサード リンク
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