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	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	AbstractÂ Â 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, â€œtroop-makingâ€ 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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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4799
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	Author	Pérez-Barbería, F.J.; Shultz, S.; Dunbar, R.I.M.; Janis, C.
	Title	Evidence For Coevolution Of Sociality And Relative Brain Size In Three Orders Of Mammals			Type	Journal Article
	Year	2007	Publication	Evolution	Abbreviated Journal
	Volume	61	Issue	12	Pages	2811-2821
	Keywords	Brain size, carnivores, coevolution, primates, sociality, ungulates
	Abstract	Abstract As the brain is responsible for managing an individual's behavioral response to its environment, we should expect that large relative brain size is an evolutionary response to cognitively challenging behaviors. The â€œsocial brain hypothesisâ€ argues that maintaining group cohesion is cognitively demanding as individuals living in groups need to be able to resolve conflicts that impact on their ability to meet resource requirements. If sociality does impose cognitive demands, we expect changes in relative brain size and sociality to be coupled over evolutionary time. In this study, we analyze data on sociality and relative brain size for 206 species of ungulates, carnivores, and primates and provide, for the first time, evidence that changes in sociality and relative brain size are closely correlated over evolutionary time for all three mammalian orders. This suggests a process of coevolution and provides support for the social brain theory. However, differences between taxonomic orders in the stability of the transition between small-brained/nonsocial and large-brained/social imply that, although sociality is cognitively demanding, sociality and relative brain size can become decoupled in some cases. Carnivores seem to have been especially prone to this.
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	Notes	doi: 10.1111/j.1558-5646.2007.00229.x			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4781
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	Author	Sterck, E.; Watts, D.; van Schaik, C.
	Title	The evolution of female social relationships in nonhuman primates			Type	Journal Article
	Year	1997	Publication	Behavioral Ecology and Sociobiology	Abbreviated Journal	Behav. Ecol. Sociobiol.
	Volume	41	Issue	5	Pages	291-309
	Keywords	ecology; matrilocal; primate; social; theory
	Abstract	Considerable interspeci®c variation in female social relationships occurs in gregarious primates, particularly with regard to agonism and cooperation between females and to the quality of female relationships with males. This variation exists alongside variation in female philopatry and dispersal. Socioecological theories have tried to explain variation in female-female social relationships from an evolutionary perspective focused on ecological factors, notably predation and food distribution. According to the current ``ecological model'', predation risk forces females of most diurnal primate species to live in groups; the strength of the contest component of competition for resources within and between groups then largely determines social relationships between females. Social elationships among gregarious females are here characterized as DispersalEgalitarian, Resident-Nepotistic, Resident-Nepotistic-Tolerant, or Resident-Egalitarian. This ecological model has successfully explained ierences in the occurrence of formal submission signals, decided dominance relation ships, coalitions and female philopatry. Group size and female rank generally aect female reproduction success as the model predicts, and studies of closely related species in dierent ecological circumstances underscore the importance of the model. Some cases, however, can only be explained when we extend the model to incorporate the eects of infanticide risk and habitat saturation. We review evidence in support of the ecological model and test the power of alternative models that invoke between-group competition, forced female philopatry, demographic female recruitment, male interventions into female aggression, and male harassment. Not one of these models can replace the ecological model, which already encompasses the between-group competition. Currently the best model, which explains several phenomena that the ecological model does not, is a ``socioecological model'' based on the combined importance of ecological factors, habitat saturation and infanticide avoidance. We note some points of similarity and divergence with other mammalian taxa; these remain to be explored in detail.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5227
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	Author	Köhler, W.
	Title	Intelligenzprüfungen an Menschenaffen			Type	Book Whole
	Year	1921	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords	Animal intelligence , Chimpanzees , Primates , Psychology
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	Publisher	Springer	Place of Publication	Berlin	Editor
	Language	German	Summary Language		Original Title
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5752
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	Author	Gruber, T.; Clay, Z.; Zuberbühler, K.
	Title	A comparison of bonobo and chimpanzee tool use: evidence for a female bias in the Pan lineage			Type	Journal Article
	Year	2010	Publication	Animal Behaviour	Abbreviated Journal	Anim. Behav.
	Volume	80	Issue	6	Pages	1023-1033
	Keywords	culture; great ape; neoteny; Pan; primate evolution; sex difference; tool use
	Abstract	Chimpanzees, Pan troglodytes, are the most sophisticated tool-users among all nonhuman primates. From an evolutionary perspective, it is therefore puzzling that the tool use behaviour of their closest living primate relative, the bonobo, Pan paniscus, has been described as particularly poor. However, only a small number of bonobo groups have been studied in the wild and only over comparably short periods. Here, we show that captive bonobos and chimpanzees are equally diverse tool-users in most contexts. Our observations illustrate that tool use in bonobos can be highly complex and no different from what has been described for chimpanzees. The only major difference in the chimpanzee and bonobo data was that bonobos of all age–sex classes used tools in a play context, a possible manifestation of their neotenous nature. We also found that female bonobos displayed a larger range of tool use behaviours than males, a pattern previously described for chimpanzees but not for other great apes. Our results are consistent with the hypothesis that the female-biased tool use evolved prior to the split between bonobos and chimpanzees.
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	ISSN	0003-3472	ISBN		Medium
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5856
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	Author	Marino, L.
	Title	Convergence of complex cognitive abilities in cetaceans and primates			Type	Journal Article
	Year	2002	Publication	Brain, Behavior and Evolution	Abbreviated Journal	Brain Behav Evol
	Volume	59	Issue	1-2	Pages	21-32
	Keywords	Animal Communication; Animals; Brain/physiology; Cerebral Cortex/physiology; Cetacea/physiology; Cognition/physiology; Evolution; Humans; Intelligence; Primates/physiology
	Abstract	What examples of convergence in higher-level complex cognitive characteristics exist in the animal kingdom? In this paper I will provide evidence that convergent intelligence has occurred in two distantly related mammalian taxa. One of these is the order Cetacea (dolphins, whales and porpoises) and the other is our own order Primates, and in particular the suborder anthropoid primates (monkeys, apes, and humans). Despite a deep evolutionary divergence, adaptation to physically dissimilar environments, and very different neuroanatomical organization, some primates and cetaceans show striking convergence in social behavior, artificial 'language' comprehension, and self-recognition ability. Taken together, these findings have important implications for understanding the generality and specificity of those processes that underlie cognition in different species and the nature of the evolution of intelligence.
	Address	Neuroscience and Behavioral Biology Program, Emory University, Atlanta, Ga. 30322, USA. lmarino@emory.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN	0006-8977	ISBN		Medium
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	Notes	PMID:12097858			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4158
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	Author	Lefebvre, L.; Reader, S.M.; Sol, D.
	Title	Brains, Innovations and Evolution in Birds and Primates			Type	Journal Article
	Year	2004	Publication	Brain, Behavior and Evolution	Abbreviated Journal	Brain. Behav. Evol.
	Volume	63	Issue	4	Pages	233-246
	Keywords	Innovation W Brain evolution W Hyperstriatum ventrale W Neostriatum W Isocortex W Birds W Primates W Tool use W Invasion biology
	Abstract	Abstract Several comparative research programs have focusedon the cognitive, life history and ecological traits thataccount for variation in brain size. We review one ofthese programs, a program that uses the reported frequencyof behavioral innovation as an operational measureof cognition. In both birds and primates, innovationrate is positively correlated with the relative size of associationareas in the brain, the hyperstriatum ventrale andneostriatum in birds and the isocortex and striatum inprimates. Innovation rate is also positively correlatedwith the taxonomic distribution of tool use, as well asinterspecific differences in learning. Some features ofcognition have thus evolved in a remarkably similar wayin primates and at least six phyletically-independent avianlineages. In birds, innovation rate is associated withthe ability of species to deal with seasonal changes in theenvironment and to establish themselves in new regions,and it also appears to be related to the rate atwhich lineages diversify. Innovation rate provides a usefultool to quantify inter-taxon differences in cognitionand to test classic hypotheses regarding the evolution ofthe brain.
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	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
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	ISSN	0006-8977	ISBN		Medium
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4738
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	Author	Bermudez, J.L.
	Title	The moral significance of birth			Type	Journal Article
	Year	1996	Publication	Ethics	Abbreviated Journal	Ethics
	Volume	106	Issue	2	Pages	378-403
	Keywords	Abortion, Induced; Animal Rights; Animals; Beginning of Human Life; Embryonic and Fetal Development; Ethical Analysis; Ethics; Fetus; Homicide; Humans; Individuality; Infant, Newborn; Infant, Premature; Infanticide; Labor, Obstetric; Life; Personhood; Philosophy; Primates; Psychology; Self Concept; *Value of Life; Analytical Approach; Genetics and Reproduction; Philosophical Approach
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0014-1704	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11656645; KIE: 31 fn.; KIE: KIE BoB Subject Heading: fetuses; KIE: KIE BoB Subject Heading: personhood			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4177
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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
	Abstract
	Address	Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. seyfarth@psych.upenn.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0027-8424	ISBN		Medium
	Area		Expedition		Conference
	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
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0027-8424	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11891325			Approved	no
	Call Number				Serial	2149
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