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Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems
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Socioecological complexity in primate groups and its cognitive correlates.

Susanne Shultz1, Robin I M Dunbar2

  • 1Department of Earth and Environmental Sciences, University of Manchester, Manchester, UK.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|August 8, 2022
PubMed
Summary
This summary is machine-generated.

Primate behaviors form two main groups: socioecological complexity and reproductive cooperation. Brain evolution, particularly neocortex size, is linked to social group size and cognitive flexibility in primates.

Keywords:
brain sizecultural evolutionencephalizationinnovationsocial brain hypothesissocial complexity

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Area of Science:

  • Primate behavior and evolution
  • Neuroscience
  • Comparative psychology

Background:

  • Understanding non-human primate social complexity and its cognitive underpinnings is challenging.
  • Primate behaviors encompass social, ecological, and reproductive aspects.

Purpose of the Study:

  • To analyze primate behaviors and their relationship with brain evolution.
  • To investigate the cognitive bases of social complexity in primates.

Main Methods:

  • Principal component analyses of social, ecological, and reproductive behaviors.
  • Meta-analysis of 44 published studies on primate brain evolution.
  • Path analysis to evaluate causal relationships between variables.

Main Results:

  • Primate behaviors condense into socioecological complexity and reproductive cooperation.
  • Cognition, sociality, and cooperative behaviors correlate with absolute brain volume and neocortex size.
  • Social group size is predicted by the neocortex, while ecological traits are predicted by non-neocortical brain structures.

Conclusions:

  • Primate cognition has evolved along a continuum, enhancing domain-general capacity for socioecological challenges.
  • Great apes and humans show a reliance on innovation and social information use.
  • Brain evolution is intricately linked to social complexity and cognitive flexibility in primates.