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Intelligenzprüfungen an Menschenaffen (literally translated: Intelligence tests on great apes) is a book by Wolfgang Köhler published in 1921. [1] The English version called "The Mentality of Apes", translated by Ella Winter, was published in 1925. [2] With the book Köhler showed that chimpanzees could solve problems by insight. [1]
In a biological sense, humans are not fundamentally different from other mammals, in that most mammals are only physically – and not cognitively – incapable of speech: “The dog and the horse, by association with man, have developed such a good ear for articulate speech that they easily learn to understand any language within their range ...
Shelford's law of tolerance is a principle developed by American zoologist Victor Ernest Shelford in 1911. It states that an organism 's success is based on a complex set of conditions and that each organism has a certain minimum, maximum, and optimum environmental factor or combination of factors that determine success. [ 1 ]
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. [1]
For example, if a shaft with a nominal diameter of 10 mm is to have a sliding fit within a hole, the shaft might be specified with a tolerance range from 9.964 to 10 mm (i.e., a zero fundamental deviation, but a lower deviation of 0.036 mm) and the hole might be specified with a tolerance range from 10.04 mm to 10.076 mm (0.04 mm fundamental ...
Ambiguity tolerance–intolerance was formally introduced in 1949 through an article published by Else Frenkel-Brunswik, who developed the concept in earlier work on ethnocentrism in children [3] In the article which defines the term, she considers, among other evidence, a study of schoolchildren who exhibit prejudice as the basis for the existence of intolerance of ambiguity.
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In the book de Waal notes that chimpanzees performed certain social maneuvering behaviors that he thought of as being "Machiavellian". [ 3 ] This hypothesis posits that large brains and distinctive cognitive abilities of primates have evolved via intense social competition in which social competitors developed increasingly sophisticated ...