The evolution of primate short-term memory

ManyPrimates, Esther Herrmann, Marine Joly, Louise Loyant

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Abstract

Short-term memory is implicated in a range of cognitive abilities and is critical for understanding primate cognitive evolution. To investigate the effects of phylogeny, ecology and sociality on short-term memory ability, we tested 421 non-human primates across 41 species in a preregistered, experimental delayed-response task. Our results confirm previous findings that longer delays decrease memory performance across species and taxa. Our analyses demonstrate a considerable contribution of phylogeny over ecological and social factors on the distribution of short-term memory performance in primates; closely related species had more similar short-term memory abilities. However, interdependencies between phylogeny and socioecology of a given species present an obstacle to disentangling the effects of each of these factors on the evolution of short-term memory capacity.
Original languageEnglish
Pages (from-to)428-516
Number of pages89
JournalAnimal Behavior and Cognition
Volume9
Issue number4
DOIs
Publication statusPublished - 1 Nov 2022

Keywords

  • cognitive evolution
  • short-term memory
  • primate cognition
  • phylogenetic analysis

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