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Related Experiment Videos

Gorillas (Gorilla gorilla) and orangutans (Pongo pygmaeus) encode relevant problem features in a tool-using task.

Nicholas J Mulcahy1, Josep Call, Robin I M Dunbar

  • 1Department of Developmental and Comparative Psychology, Max-Planck Institute for Evolutionary Anthropology, D-04103 Leipzig, Germany. mulcahy@eva.mpg.de

Journal of Comparative Psychology (Washington, D.C. : 1983)
|March 3, 2005
PubMed
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Great apes like gorillas and orangutans demonstrate advanced problem-solving skills. They can select appropriate tools and use them sequentially to retrieve rewards, showcasing cognitive abilities in tool use.

Area of Science:

  • Primate Cognition
  • Animal Behavior
  • Comparative Psychology

Background:

  • Problem-solving involves encoding task features and combining actions.
  • Tool use is a key indicator of cognitive flexibility in animals.

Purpose of the Study:

  • To investigate problem-solving abilities in gorillas and orangutans.
  • To examine the capacity for tool selection and sequential tool use in great apes.

Main Methods:

  • A task was designed requiring gorillas and orangutans to use tools to retrieve out-of-reach rewards.
  • Tool length appropriateness and sequential use were systematically varied.

Main Results:

  • Subjects successfully selected tools of appropriate length, even without simultaneous visibility of reward and tools.

Related Experiment Videos

  • Apes refused to use tools that were too short, indicating an understanding of tool efficacy.
  • Great apes demonstrated proficiency in using tools in sequence to achieve a goal.

    • Conclusions:

    • Gorillas and orangutans possess sophisticated cognitive skills for tool use and problem-solving.
    • These findings highlight advanced planning and action sequencing capabilities in great apes.