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Gorillas' (Gorilla gorilla gorilla) spatial memory in a foraging task

S E MacDonald1

  • 1Department of Psychology, York University, Atkinson College, Toronto, Ontario, Canada.

Journal of Comparative Psychology (Washington, D.C. : 1983)
|June 1, 1994
PubMed
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Gorillas exhibit impressive spatial memory, accurately recalling food locations after long delays. An adult gorilla even used a counting strategy to optimize foraging efficiency.

Area of Science:

  • Primate cognition
  • Animal behavior
  • Comparative psychology

Background:

  • Spatial memory is crucial for foraging success in many species.
  • Understanding primate memory can offer insights into cognitive evolution.

Purpose of the Study:

  • To investigate the spatial memory capabilities of gorillas (Gorilla gorilla gorilla).
  • To explore potential memory strategies employed by gorillas during foraging tasks.

Main Methods:

  • A simulated foraging task involving delayed recall of baited food locations.
  • Two experiments were conducted, one with an adult and one with a juvenile gorilla.
  • Testing involved a search phase, a delay period, and a re-search phase.

Main Results:

Related Experiment Videos

  • The adult gorilla demonstrated accurate memory of food locations after delays of 24 hours or more.
  • The juvenile gorilla also showed accurate memory recall for delays up to 10 minutes.
  • The adult gorilla appeared to employ a counting strategy to minimize revisited sites.

Conclusions:

  • Gorillas possess robust long-term spatial memory for food locations.
  • Gorillas may utilize cognitive strategies, such as counting, to enhance foraging efficiency.
  • These findings contribute to our understanding of primate cognitive abilities and memory systems.