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Author Seyfarth, R.M.; Cheney, D.L.
Title Social cognition Type Journal Article
Year 2015 Publication Animal Behaviour Abbreviated Journal
Volume 103 Issue Pages 191-202
Keywords evolution; fitness; future research; personality; selective pressure; skill; social cognition
Abstract The social intelligence hypothesis argues that competition and cooperation among individuals have shaped the evolution of cognition in animals. What do we mean by social cognition? Here we suggest that the building blocks of social cognition are a suite of skills, ordered roughly according to the cognitive demands they place upon individuals. These skills allow an animal to recognize others by various means; to recognize and remember other animals' relationships; and, perhaps, to attribute mental states to them. Some skills are elementary and virtually ubiquitous in the animal kingdom; others are more limited in their taxonomic distribution. We treat these skills as the targets of selection, and assume that more complex levels of social cognition evolve only when simpler methods are inadequate. As a result, more complex levels of social cognition indicate greater selective pressures in the past. The presence of each skill can be tested directly through field observations and experiments. In addition, the same methods that have been used to compare social cognition across species can also be used to measure individual differences within species and to test the hypothesis that individual differences in social cognition are linked to differences in reproductive success.
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial (down) 6025
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Author Seyfarth, R.M.; Cheney, D.L.
Title Social Awareness in Monkeys Type Journal Article
Year 2000 Publication Amer. Zool. Abbreviated Journal
Volume 40 Issue 6 Pages 902-909
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Abstract Tests of self-awareness in nonhuman primates have to date been concerned almost entirely with the recognition of an animal's reflection in a mirror. By contrast, we know much less about non-human primates' perception of their place within a social network, or of their understanding of themselves as individuals with unique sets of social relationships. Here we review evidence that monkeys who fail the mirror test may nonetheless behave as if they recognize themselves as distinct individuals, each of whom occupies a unique place in society and has a specific set of relations with others. A free-ranging vervet monkey, baboon, or macaque recognizes other members of his group as individuals. He also recognizes matrilineal kin groups, linear dominance rank orders, and behaves as if he recognizes his own unique place within them. This sense of “social self” in monkeys, however, is markedly different from self-awareness in humans. Although monkeys may behave in ways that accurately place themselves within a social network, they are unaware of the knowledge that allows them to do so: they do not know what they know, cannot reflect on what they know, and cannot become the object of their own attention.
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Notes 10.1093/icb/40.6.902 Approved no
Call Number Equine Behaviour @ team @ Serial (down) 4934
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Author Cheney, D.L.; Seyfarth, R.M.
Title How Monkeys See the World Type Miscellaneous
Year 1990 Publication Abbreviated Journal
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Call Number Equine Behaviour @ team @ Serial (down) 4866
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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
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Call Number Equine Behaviour @ team @ Serial (down) 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
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Call Number Equine Behaviour @ team @ Serial (down) 4864
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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
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Publisher Oxford Univ Press Place of Publication Oxford Editor
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ISSN ISBN 0-19-852175-8 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Byrne+Whiten1988 Serial (down) 4787
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Author Crockford, C.; Wittig, R.M.; Seyfarth, R.M.; Cheney, D.L.
Title Baboons eavesdrop to deduce mating opportunities Type Journal Article
Year 2007 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 73 Issue 5 Pages 885-890
Keywords baboon; cognition; eavesdropping; extrapair copulation; mate guarding; Papio hamadryas ursinus; primate; social intelligence; third-party relationships; transient relationships
Abstract Many animals appear to monitor changes in other individuals' dominance ranks and social relationships and to track changes in them. However, it is not known whether they also track changes in very transient relationships. Rapid recognition of a temporary separation between a dominant male and a sexually receptive female, for example, should be adaptive in species where subordinate males use opportunistic strategies to achieve mating success. Dominant male baboons (Papio hamadryas ursinus) form sexual consortships with oestrous females that are characterized by mate guarding and close proximity. To assess whether subordinate males track temporary changes in the status of other males' consortships, we conducted playback experiments using a two-speaker paradigm. In the test condition, subjects heard the consort male's grunts played from one speaker and his consort female's copulation call played from a speaker approximately 40 m away. This sequence suggested that the male and female had temporarily separated and that the female was mating with another male. In a control trial, subjects heard another dominant male's grunts played from one speaker and the female's copulation call played from the other. In a second control trial, conducted within 24 h after the consortship had ended, subjects again heard the consort male's grunt and the female's copulation call played from separate speakers. As predicted, subjects responded strongly only in the test condition. Eavesdropping upon the temporal and spatial juxtaposition of other individuals' vocalizations may be one strategy by which male baboons achieve sneaky matings.
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Call Number refbase @ user @ Serial (down) 816
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Author Seyfarth, R.M.; Cheney, D.L.
Title Grooming, alliances and reciprocal altruism in vervet monkeys Type Journal Article
Year 1984 Publication Nature Abbreviated Journal Nature
Volume 308 Issue 5959 Pages 541-543
Keywords *Altruism; Animals; Cercopithecus/*physiology; Cercopithecus aethiops/*physiology; *Grooming; *Social Behavior; Vocalization, Animal
Abstract Reciprocal altruism refers to the exchange of beneficial acts between individuals, in which the benefits to the recipient exceed the cost to the altruist. Theory predicts that cooperation among unrelated animals can occur whenever individuals encounter each other regularly and are capable of adjusting their cooperative behaviour according to experience. Although the potential for reciprocal altruism exists in many animal societies, most interactions occur between closely related individuals, and examples of reciprocity among non-kin are rare. The field experiments on vervet monkeys which we present here demonstrate that grooming between unrelated individuals increases the probability that they will subsequently attend to each others' solicitations for aid. Vervets appear to be more willing to aid unrelated individuals if those individuals have behaved affinitively toward them in the recent past. In contrast, recent grooming between close genetic relatives appears to have no effect on their willingness to respond to each other's solicitations for aid.
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ISSN 0028-0836 ISBN Medium
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Notes PMID:6709060 Approved no
Call Number refbase @ user @ Serial (down) 704
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Author Seyfarth, R.M.; Cheney, D.L.
Title The acoustic features of vervet monkey grunts Type Journal Article
Year 1984 Publication The Journal of the Acoustical Society of America Abbreviated Journal J Acoust Soc Am
Volume 75 Issue 5 Pages 1623-1628
Keywords *Acoustics; Animals; Auditory Perception; Cercopithecus/*physiology; Cercopithecus aethiops/*physiology; Cues; Dominance-Subordination; Female; Male; Social Behavior; Sound Spectrography; *Vocalization, Animal
Abstract East African vervet monkeys give short (125 ms), harsh-sounding grunts to each other in a variety of social situations: when approaching a dominant or subordinate member of their group, when moving into a new area of their range, or upon seeing another group. Although all these vocalizations sound similar to humans, field playback experiments have shown that the monkeys distinguish at least four different calls. Acoustic analysis reveals that grunts have an aperiodic F0, at roughly 240 Hz. Most grunts exhibit a spectral peak close to this irregular F0. Grunts may also contain a second, rising or falling frequency peak, between 550 and 900 Hz. The location and changes in these two frequency peaks are the cues most likely to be used by vervets when distinguishing different grunt types.
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ISSN 0001-4966 ISBN Medium
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Notes PMID:6736426 Approved no
Call Number refbase @ user @ Serial (down) 703
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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
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ISSN 0010-0277 ISBN Medium
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Notes PMID:2269006 Approved no
Call Number refbase @ user @ Serial (down) 702
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