Chimpanzee problem solving research. Chimpanzee assembling sticks to reach bananas placed out of its reach outside of its cage. This work by the Germa

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Chimpanzee problem solving research. Chimpanzee assembling sticks to reach bananas placed out of its reach outside of its cage. This work by the German psychologist Wolfgang Kohler (1887-1967) at a primate research station on Tenerife, led to the book 'Mentality of the Apes' (1917).

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