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The social brain hypothesis
Conventional wisdom over the past 160 years in the cognitive and neurosciences has assumed that brains evolved to process factual information about the world. Most attention has therefore beenExpand
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Coevolution of neocortical size, group size and language in humans
Group size is a function of relative neocortical volume in nonhuman primates. Extrapolation from this regression equation yields a predicted group size for modern humans very similar to that ofExpand
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Gossip in Evolutionary Perspective
Conversation is a uniquely human phenomenon. Analyses of freely forming conversations indicate that approximately two thirds of conversation time is devoted to social topics, most of which can beExpand
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Primate social systems
1. Primates and their Societies.- Asking the Right Questions.- The Primate Heritage.- Primate Social Systems.- 2. Theory of Reproductive Strategies.- An Evolutionary Perspective.- Optimal StrategyExpand
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Social network size in humans
This paper examines social network size in contemporary Western society based on the exchange of Christmas cards. Maximum network size averaged 153.5 individuals, with a mean network size of 124.9Expand
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Primate Conservation Biology
A recent report warns that nearly 20 per cent of the world's primates may go extinct by 2020. This work integrates theoretical advances with practical management priorities to give scientists andExpand
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Time: a hidden constraint on the behavioural ecology of baboons
  • R. Dunbar
  • Biology
  • Behavioral Ecology and Sociobiology
  • 1 July 1992
SummaryData from wild populations of baboons are used to derive functional equations relating time budget components, day journey length and group size to environmental variables. This set ofExpand
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The social role of touch in humans and primates: Behavioural function and neurobiological mechanisms
  • R. Dunbar
  • Psychology, Medicine
  • Neuroscience & Biobehavioral Reviews
  • 1 February 2010
Grooming is a widespread activity throughout the animal kingdom, but in primates (including humans) social grooming, or allo-grooming (the grooming of others), plays a particularly important role inExpand
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Functional significance of social grooming in primates
Frequencies of social grooming recorded from 44 species of free-living primates correlate with group size but not body size. This is interpreted as evidence for the social function of grooming andExpand
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Neocortex Size, Group Size, and the Evolution of Language
l'auteur propose un modele derive de la morphologie et de l'ethologie comparative des primates. Il suggere l'idee que le besoin est le moteur de l'evolution du langage et de l'encephalisation desExpand
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