Exchange of objects between humans and captive western lowland gorillas

  title={Exchange of objects between humans and captive western lowland gorillas},
  author={Raphael Chalmeau and Patricia Peignot},
An experiment was carried out to assess the ability of captive western lowland gorillas (Gorilla g. gorilla) to exchange objects with a human partner. Before the exchange itself, individuals had to learn to give an item to the experimenter. Four individuals out of nine performed active giving. After that familiarization with giving behaviour, two kinds of exchanges, of increasing complexity, were tested with gorillas. Simple exchange (give C to obtain D) was the first procedure and six gorillas… 

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