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Scale-model comprehension by chimpanzees (Pan troglodytes).

V A Kuhlmeier1, S T Boysen, K L Mukobi

  • 1Department of Psychology, The Ohio State University, Columbus 43210-1222, USA.

Journal of Comparative Psychology (Washington, D.C. : 1983)
|December 23, 1999
PubMed
Summary

Chimpanzees

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Area of Science:

  • Primate cognition
  • Comparative psychology
  • Animal behavior

Background:

  • Understanding spatial relationships is crucial for survival.
  • Scale model tasks assess abstract reasoning in non-human animals.
  • Previous research on great ape spatial cognition has yielded mixed results.

Purpose of the Study:

  • To investigate chimpanzees' ability to comprehend the relationship between a scale model and its real-world referent.
  • To determine if chimpanzees can use a model to locate hidden objects in a larger space.

Main Methods:

  • Chimpanzees observed a researcher hide food in a scale model.
  • Subjects then searched for the corresponding real food in the actual environment.
  • Two experiments utilized different model setups and subject groups.

Main Results:

  • One adult female chimpanzee performed significantly above chance in locating the hidden food.
  • A young adult male chimpanzee performed at chance level.
  • In a larger-scale model, some adult chimpanzees demonstrated understanding, while others struggled with search strategies.

Conclusions:

  • Some chimpanzees exhibit an understanding of scale model-to-environment correspondence.
  • Individual variation exists in this cognitive ability among chimpanzees.
  • Further research is needed to explore factors influencing success in scale model tasks.

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