Reflections of the social environment in chimpanzee memory

Applying rational analysis beyond humans

Jeffrey R Stevens, Julian N. Marewski, Lael J. Schooler, Ian C. Gilby

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In cognitive science, the rational analysis framework allows modelling of how physical and social environments impose information-processing demands onto cognitive systems. In humans, for example, past social contact among individuals predicts their future contact with linear and power functions. These features of the human environment constrain the optimal way to remember information and probably shape how memory records are retained and retrieved. We offer a primer on how biologists can apply rational analysis to study animal behaviour. Using chimpanzees (Pan troglodytes) as a case study, we modelled 19 years of observational data on their social contact patterns. Much like humans, the frequency of past encounters in chimpanzees linearly predicted future encounters, and the recency of past encounters predicted future encounters with a power function. Consistent with the rational analyses carried out for human memory, these findings suggest that chimpanzee memory performance should reflect those environmental regularities. In re-analysing existing chimpanzee memory data, we found that chimpanzee memory patterns mirrored their social contact patterns. Our findings hint that human and chimpanzee memory systems may have evolved to solve similar information-processing problems. Overall, rational analysis offers novel theoretical and methodological avenues for the comparative study of cognition.

Original languageEnglish (US)
Article number160293
JournalRoyal Society Open Science
Volume3
Issue number8
DOIs
StatePublished - Aug 1 2016

Fingerprint

social relations
information processing
regularity
Social Environment
cognition
animal
contact
science
performance

Keywords

  • Chimpanzees
  • Comparative cognition
  • Forgetting
  • Memory
  • Rational analysis
  • Social contact

ASJC Scopus subject areas

  • General

Cite this

Reflections of the social environment in chimpanzee memory : Applying rational analysis beyond humans. / Stevens, Jeffrey R; Marewski, Julian N.; Schooler, Lael J.; Gilby, Ian C.

In: Royal Society Open Science, Vol. 3, No. 8, 160293, 01.08.2016.

Research output: Contribution to journalArticle

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