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	Author	Bergman, T.J.; Beehner, J.C.; Cheney, D.L.; Seyfarth, R.M.
	Title	Hierarchical classification by rank and kinship in baboons			Type	Journal Article
	Year	2003	Publication	Science (New York, N.Y.)	Abbreviated Journal	Science
	Volume	302	Issue	5648	Pages	1234-1236
	Keywords	Animals; Animals, Wild; Botswana; Cognition; Family; Female; Hierarchy, Social; Language; *Papio/psychology; Social Dominance; Vocalization, Animal
	Abstract	Humans routinely classify others according to both their individual attributes, such as social status or wealth, and membership in higher order groups, such as families or castes. They also recognize that people's individual attributes may be influenced and regulated by their group affiliations. It is not known whether such rule-governed, hierarchical classifications are specific to humans or might also occur in nonlinguistic species. Here we show that baboons recognize that a dominance hierarchy can be subdivided into family groups. In playback experiments, baboons respond more strongly to call sequences mimicking dominance rank reversals between families than within families, indicating that they classify others simultaneously according to both individual rank and kinship. The selective pressures imposed by complex societies may therefore have favored cognitive skills that constitute an evolutionary precursor to some components of human cognition.
	Address	Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA. thore@sas.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	1095-9203	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:14615544			Approved	no
	Call Number	refbase @ user @			Serial	689
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	Author	Cheney D.L.; Seyfarth, R.M.
	Title	How monkeys see the world: Inside the mind of another species			Type	Book Whole
	Year	1990	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	University of Chicago Press	Place of Publication	Chicago	Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	refbase @ user @			Serial	706
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	Author	Cheney, D.L.; Seyfarth, R.M
	Title	Social and non.social knowledge in vervet monkeys			Type	Book Chapter
	Year	1988	Publication	Machiavellian Intelligence	Abbreviated Journal
	Volume		Issue		Pages	255-270
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Oxford Univ Press	Place of Publication	Oxford	Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN	0-19-852175-8	Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @ Byrne+Whiten1988			Serial	4787
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	Recognition of other individuals' social relationships by female baboons			Type	Journal Article
	Year	1999	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	58	Issue	1	Pages	67-75
	Keywords
	Abstract	We describe a series of playback experiments designed to test whether free-ranging baboons, Papio cynocephalus ursinus, recognize the calls of other group members and also associate signallers with their close genetic relatives. Pairs of unrelated females were played sequences of calls that mimicked a fight between their relatives. As controls, the same females heard sequences that involved either (1) only the more dominant female's relative or (2) neither of the females' relatives. When call sequences involved their relatives, subjects looked towards the speaker for a longer duration than when the sequences involved nonkin. When the sequences involved the other female's relative, they also looked towards that female. Subjects did not look towards one another when call sequences involved nonkin. Dominant subjects were more likely to supplant their subordinate partners following playbacks of sequences that mimicked a dispute between their relatives than following the two control trials. In contrast, both subjects were more likely to approach one another and to interact in a friendly manner following the two control trials than following the test trial. Results indicate that female baboons recognize the screams and threat grunts not only of their own close relatives but also of unrelated individuals. They also replicate previous studies in suggesting that female monkeys recognize the close associates of other individuals and adjust their interactions with others according to recent events involving individuals other than themselves. Copyright 1999 The Association for the Study of Animal Behaviour.
	Address	Departments of Biology and Psychology, University of Pennsylvania
	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	0003-3472	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10413542			Approved	no
	Call Number	refbase @ user @			Serial	346
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	Reconciliatory grunts by dominant female baboons influence victims' behaviour			Type	Journal Article
	Year	1997	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	54	Issue	2	Pages	409-418
	Keywords
	Abstract	Following aggressive interactions, dominant female baboons, Papio cynocephalus ursinusoccasionally grunt to their victims. To examine the effect of these apparently reconciliatory grunts on victims' subsequent behaviour, a series of playback experiments was designed to mimic reconciliation. Victims were played their opponents' grunts in the minutes immediately following a fight and then observed for half an hour. After hearing these grunts, victims approached their former opponents and also tolerated their opponents' approaches at significantly higher rates than they did under control conditions. They were also supplanted by their opponents at significantly lower rates. By contrast, playbacks of control females' grunts did not influence victims' behaviour. Playbacks of reconciliatory grunts did not increase the rate at which opponents approached or initiated friendly interactions with their former victims. Playbacks of reconciliatory grunts, therefore, appeared to influence victims', but not opponents', perception of recent events.
	Address	Departments of Biology and Psychology, University of Pennsylvania
	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	0003-3472	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9268473			Approved	no
	Call Number	refbase @ user @			Serial	347
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	How Monkeys See the World			Type	Miscellaneous
	Year	1990	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4866
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	The representation of social relations by monkeys			Type	Journal Article
	Year	1990	Publication	Cognition	Abbreviated Journal	Cognition
	Volume	37	Issue	1-2	Pages	167-196
	Keywords	Animals; Cercopithecus aethiops/psychology; Concept Formation; Dominance-Subordination; Female; Macaca fascicularis/psychology; Male; Social Behavior; *Social Environment
	Abstract	Monkeys recognize the social relations that exist among others in their group. They know who associates with whom, for example, and other animals' relative dominance ranks. In addition, monkeys appear to compare types of social relations and make same/different judgments about them. In captivity, longtailed macaques (Macaca fascicularis) trained to recognize the relation between one adult female and her offspring can identify the same relation among other mother-offspring pairs, and distinguish this relation from bonds between individuals who are related in a different way. In the wild, if a vervet monkey (Cercopithecus aethiops) has seen a fight between a member of its own family and a member of Family X, this increases the likelihood that it will act aggressively toward another member of Family X. Vervets act as if they recognize some similarity between their own close associates and the close associates of others. To make such comparisons the monkeys must have some way of representing the properties of social relationships. We discuss the adaptive value of such representations, the information they contain, their structure, and their limitations.
	Address	Department of Anthropology, University of Pennsylvania, Philadelphia 19104
	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	0010-0277	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:2269006			Approved	no
	Call Number	refbase @ user @			Serial	702
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	Reconciliation and redirected aggression in vervet monkeys, Behaviour			Type	Journal Article
	Year	1989	Publication	Behaviour	Abbreviated Journal	Behaviour
	Volume	110	Issue		Pages	258-275
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4865
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	The recognition of social alliances among vervet monkeys			Type	Journal Article
	Year	1986	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	34	Issue		Pages	1722-1731
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4864
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	Author	Cheney, D.L.; Seyfarth, R.M.; Silk, J.B.
	Title	The responses of female baboons (Papio cynocephalus ursinus) to anomalous social interactions: evidence for causal reasoning?			Type	Journal Article
	Year	1995	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	109	Issue	2	Pages	134-141
	Keywords	Animals; Attention; Auditory Perception; Awareness; Concept Formation; Dominance-Subordination; Fear; Female; Hierarchy, Social; Papio/psychology; *Social Behavior; Social Environment; Vocalization, Animal
	Abstract	Baboons' (Papio cynocephalus ursinus) understanding of cause-effect relations in the context of social interactions was examined through use of a playback experiment. Under natural conditions, dominant female baboons often grunt to more subordinate mothers when interacting with their infants. Mothers occasionally respond to these grunts by uttering submissive fear barks. Subjects were played causally inconsistent call sequences in which a lower ranking female apparently grunted to a higher ranking female, and the higher ranking female apparently responded with fear barks. As a control, subjects heard a sequence made causally consistent by the inclusion of grunts from a 3rd female that was dominant to both of the others. Subjects responded significantly more strongly to the causally inconsistent sequences, suggesting that they recognized the factors that cause 1 individual to give submissive vocalizations to another.
	Address	Department of Biology, University of Pennsylvania, Philadelphia 19104, USA
	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	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:7758289			Approved	no
	Call Number	refbase @ user @			Serial	348
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