| Records |
| Author |
Sawaguchi, T.; Kudo, H. |
| Title |
Neocortical development and social structure in primates |
Type |
Journal Article |
| Year |
1990 |
Publication  |
Primates |
Abbreviated Journal |
Primates |
| Volume |
31 |
Issue |
2 |
Pages |
283-289 |
| Keywords |
Neocortex – Relative size – Allometry – Congeneric group – Social structure – Monogyny – Polygyny – Primates |
| Abstract |
Abstract  The relationships between the relative size of the neocortex and differences in social structures were examined in prosimians and anthropoids. The relative size of the neocortex (RSN) of a given congeneric group in each superfamily of primates was measured based on the allometric relationships between neocortical volume and brain weight for each superfamily, to control phylogenetic affinity and the effects of brain size. In prosimians, “troop-making” congeneric groups (N=3) revealed a significantly larger RSN than solitary groups (N=6), and there was a significant, positive correlation between RSN and troop size. In the case of anthropoids, polygynous/frugivorous groups (N=5) revealed a significantly larger RSN than monogynous/frugivorous groups (N=8). Furthermore, a significant, positive correlation between RSN and troop size was found for frugivorous congeneric groups of the Ceboidea. These results suggest that neocortical development is associated with differences in social structure among primates. |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4799 |
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| Author |
Boyd, R.; Richerson, P.J. |
| Title |
Why Culture is Common, but Cultural Evolution is Rare |
Type |
Journal Article |
| Year |
1996 |
Publication |
Proceedings of the British Academy |
Abbreviated Journal |
Proc Br Acad |
| Volume |
88 |
Issue |
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Pages |
73-93 |
| Keywords |
cultural distributed evolution primates |
| Abstract |
If culture is defined as variation acquired and maintained by social learning, then culture is common in nature. However, cumulative cultural evolution resulting in behaviors that no individual could invent on their own is limited to humans, song birds, and perhaps chimpanzees. Circumstantial evidence suggests that cumulative cultural evolution requires the capacity for observational learning. Here, we analyze two models the evolution of psychological capacities that allow cumulative cultural evolution. Both models suggest that the conditions which allow the evolution of such capacities when rare are much more stringent than the conditions which allow the maintenance of the capacities when common. This result follows from the fact that the assumed benefit of the capacities, cumulative cultural adaptation, cannot occur when the capacities are rare. These results suggest why such capacities may be rare in nature. |
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Royal Society/British Academy |
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http://www.proc.britac.ac.uk/cgi-bin/somsid.cgi?page=summaries/pba88#boyd |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4195 |
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| Author |
Seyfarth, R.M.; Cheney, D.L. |
| Title |
What are big brains for? |
Type |
Journal Article |
| Year |
2002 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
| Volume |
99 |
Issue |
7 |
Pages |
4141-4142 |
| Keywords |
Animals; Brain/*anatomy & histology; *Intelligence; Learning; Primates/*anatomy & histology/*psychology; Social Behavior |
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| Address |
Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. seyfarth@psych.upenn.edu |
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English |
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| ISSN |
0027-8424 |
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| Notes |
PMID:11929989 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
692 |
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| Author |
Reader, S.M.; Laland, K.N. |
| Title |
Social intelligence, innovation, and enhanced brain size in primates |
Type |
Journal Article |
| Year |
2002 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
| Volume |
99 |
Issue |
7 |
Pages |
4436-4441 |
| Keywords |
Animals; Brain/*anatomy & histology; Evolution; *Intelligence; Learning; Primates/*anatomy & histology/*psychology; Social Behavior |
| Abstract |
Despite considerable current interest in the evolution of intelligence, the intuitively appealing notion that brain volume and “intelligence” are linked remains untested. Here, we use ecologically relevant measures of cognitive ability, the reported incidence of behavioral innovation, social learning, and tool use, to show that brain size and cognitive capacity are indeed correlated. A comparative analysis of 533 instances of innovation, 445 observations of social learning, and 607 episodes of tool use established that social learning, innovation, and tool use frequencies are positively correlated with species' relative and absolute “executive” brain volumes, after controlling for phylogeny and research effort. Moreover, innovation and social learning frequencies covary across species, in conflict with the view that there is an evolutionary tradeoff between reliance on individual experience and social cues. These findings provide an empirical link between behavioral innovation, social learning capacities, and brain size in mammals. The ability to learn from others, invent new behaviors, and use tools may have played pivotal roles in primate brain evolution. |
| Address |
Department of Zoology, University of Cambridge, High Street, Madingley, Cambridge CB3 8AA, United Kingdom |
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English |
Summary Language |
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Edition |
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| ISSN |
0027-8424 |
ISBN |
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| Notes |
PMID:11891325 |
Approved |
no |
| Call Number |
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Serial |
2149 |
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| Author |
Barton, R.A. |
| Title |
Neocortex size and behavioural ecology in primates |
Type |
Journal Article |
| Year |
1996 |
Publication |
Proceedings of the Royal Society B |
Abbreviated Journal |
Proc. R. Soc. Lond. B |
| Volume |
263 |
Issue |
1367 |
Pages |
173-177 |
| Keywords |
Animals; *Behavior, Animal; Brain/*anatomy & histology; Cerebral Cortex/*anatomy & histology/*physiology; *Ecology; Evolution; Primates/anatomy & histology/*physiology/psychology; Regression Analysis; Species Specificity |
| Abstract |
The neocortex is widely held to have been the focus of mammalian brain evolution, but what selection pressures explain the observed diversity in its size and structure? Among primates, comparative studies suggest that neocortical evolution is related to the cognitive demands of sociality, and here I confirm that neocortex size and social group size are positively correlated once phylogenetic associations and overall brain size are taken into account. This association holds within haplorhine but not strepsirhine primates. In addition, the neocortex is larger in diurnal than in nocturnal primates, and among diurnal haplorhines its size is positively correlated with the degree of frugivory. These ecological correlates reflect the diverse sensory-cognitive functions of the neocortex. |
| Address |
Department of Anthropology, University of Durham |
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English |
Summary Language |
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Edition |
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| ISSN |
0962-8452 |
ISBN |
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| Notes |
PMID:8728982 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4783 |
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| Author |
Barrett, L.; Henzi, P. |
| Title |
The social nature of primate cognition |
Type |
Journal Article |
| Year |
2005 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
272 |
Issue |
1575 |
Pages |
1865-1875 |
| Keywords |
Animals; Brain/anatomy & histology/*physiology; Cognition/*physiology; *Evolution; Intelligence/*physiology; Primates/*physiology; *Social Behavior |
| Abstract |
The hypothesis that the enlarged brain size of the primates was selected for by social, rather than purely ecological, factors has been strongly influential in studies of primate cognition and behaviour over the past two decades. However, the Machiavellian intelligence hypothesis, also known as the social brain hypothesis, tends to emphasize certain traits and behaviours, like exploitation and deception, at the expense of others, such as tolerance and behavioural coordination, and therefore presents only one view of how social life may shape cognition. This review outlines work from other relevant disciplines, including evolutionary economics, cognitive science and neurophysiology, to illustrate how these can be used to build a more general theoretical framework, incorporating notions of embodied and distributed cognition, in which to situate questions concerning the evolution of primate social cognition. |
| Address |
School of Biological Sciences, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK. louiseb@liv.ac.uk |
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English |
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0962-8452 |
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| Notes |
PMID:16191591 |
Approved |
no |
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Serial |
2086 |
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| Author |
Joffe, T.H.; Dunbar, R.I. |
| Title |
Visual and socio-cognitive information processing in primate brain evolution |
Type |
Journal Article |
| Year |
1997 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
264 |
Issue |
1386 |
Pages |
1303-1307 |
| Keywords |
Animals; Brain/anatomy & histology/*physiology; Cognition/physiology; *Evolution; Geniculate Bodies/anatomy & histology/physiology; Humans; Mental Processes/physiology; Neocortex/physiology; Primates/anatomy & histology/*physiology/*psychology; *Social Behavior; Visual Cortex/anatomy & histology/physiology |
| Abstract |
Social group size has been shown to correlate with neocortex size in primates. Here we use comparative analyses to show that social group size is independently correlated with the size of non-V1 neocortical areas, but not with other more proximate components of the visual system or with brain systems associated with emotional cueing (e.g. the amygdala). We argue that visual brain components serve as a social information 'input device' for socio-visual stimuli such as facial expressions, bodily gestures and visual status markers, while the non-visual neocortex serves as a 'processing device' whereby these social cues are encoded, interpreted and associated with stored information. However, the second appears to have greater overall importance because the size of the V1 visual area appears to reach an asymptotic size beyond which visual acuity and pattern recognition may not improve significantly. This is especially true of the great ape clade (including humans), that is known to use more sophisticated social cognitive strategies. |
| Address |
School of Life Sciences, University of Liverpool, UK |
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English |
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0962-8452 |
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| Notes |
PMID:9332015 |
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no |
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Serial |
2095 |
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| Author |
de Waal, F.B. |
| Title |
Primates--A natural heritage of conflict resolution |
Type |
Journal Article |
| Year |
2000 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
289 |
Issue |
5479 |
Pages |
586-590 |
| Keywords |
Aggression/*psychology; Animals; Behavior, Animal; *Conflict (Psychology); Female; Humans; Male; *Primates; *Social Behavior; Social Dominance |
| Abstract |
The traditional notion of aggression as an antisocial instinct is being replaced by a framework that considers it a tool of competition and negotiation. When survival depends on mutual assistance, the expression of aggression is constrained by the need to maintain beneficial relationships. Moreover, evolution has produced ways of countering its disruptive consequences. For example, chimpanzees kiss and embrace after fights, and other nonhuman primates engage in similar “reconciliations.” Theoretical developments in this field carry implications for human aggression research. From families to high schools, aggressive conflict is subject to the same constraints known of cooperative animal societies. It is only when social relationships are valued that one can expect the full complement of natural checks and balances. |
| Address |
Living Links, Center for the Advanced Study of Human and Ape Evolution, Yerkes Regional Primate Research Center, and Psychology Department, Emory University, Atlanta, GA 30322, USA. dewaal@emory.edu |
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English |
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0036-8075 |
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| Notes |
PMID:10915614 |
Approved |
no |
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refbase @ user @ |
Serial |
187 |
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| Author |
Cheney, D.; Seyfarth, R.; Smuts, B. |
| Title |
Social relationships and social cognition in nonhuman primates |
Type |
Journal Article |
| Year |
1986 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
234 |
Issue |
4782 |
Pages |
1361-1366 |
| Keywords |
Animals; *Cognition; Female; Male; Pair Bond; Primates/*physiology; *Social Behavior; Social Dominance; Social Perception |
| Abstract |
Complex social relationships among nonhuman primates appear to contribute to individual reproductive success. Experiments with and behavioral observations of natural populations suggest that sophisticated cognitive mechanisms may underlie primate social relationships. Similar capacities are usually less apparent in the nonsocial realm, supporting the view that at least some aspects of primate intelligence evolved to solve the challenges of interacting with conspecifics. |
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English |
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0036-8075 |
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| Notes |
PMID:3538419 |
Approved |
no |
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refbase @ user @ |
Serial |
349 |
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| Author |
Pennisi, E. |
| Title |
Are out primate cousins 'conscious'? |
Type |
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| Year |
1999 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
284 |
Issue |
5423 |
Pages |
2073-2076 |
| Keywords |
Animals; *Behavior, Animal; Cebus; *Consciousness; Empathy; Humans; Instinct; Intelligence; Learning; *Mental Processes; Pan troglodytes; *Primates |
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English |
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Edition |
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0036-8075 |
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| Notes |
PMID:10409060 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2843 |
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