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Author Silk, J.; Cheney, D.; Seyfarth, R. url  doi
openurl 
  Title A practical guide to the study of social relationships Type Journal Article
  Year 2013 Publication Evolutionary Anthropology: Issues, News, and Reviews Abbreviated Journal Evol. Anthropol.  
  Volume 22 Issue 5 Pages 213-225  
  Keywords observational methods; behavioral analysis; methods; dyadic relationships; social bonds  
  Abstract Behavioral ecologists have devoted considerable effort to identifying the sources of variation in individual reproductive success. Much of this work has focused on the characteristics of individuals, such as their sex and rank. However, many animals live in stable social groups and the fitness of individuals depends at least in part on the outcome of their interactions with other group members. For example, in many primate species, high dominance rank enhances access to resources and reproductive success. The ability to acquire and maintain high rank often depends on the availability and effectiveness of coalitionary support. Allies may be cultivated and coalitions may be reinforced by affiliative interactions such as grooming, food sharing, and tolerance. These findings suggest that if we want to understand the selective pressures that shape the social behavior of primates, it will be profitable to broaden our focus from the characteristics of individuals to the properties of the relationships that they form with others. The goal of this paper is to discuss a set of methods that can be used to quantify the properties of social relationships.  
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  ISSN (down) 1520-6505 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5748  
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Author Kitchen, D.M.; Cheney, D.L.; Seyfarth, R.M. doi  openurl
  Title Male chacma baboons (Papio hamadryas ursinus) discriminate loud call contests between rivals of different relative ranks Type Journal Article
  Year 2005 Publication Animal cognition Abbreviated Journal Anim. Cogn.  
  Volume 8 Issue 1 Pages 1-6  
  Keywords Acoustic Stimulation; Animals; *Discrimination Learning; *Hierarchy, Social; Male; Papio hamadryas/*psychology; *Social Dominance; *Vocalization, Animal  
  Abstract Males in multi-male groups of chacma baboons (Papio hamadryas ursinus) in Botswana compete for positions in a linear dominance hierarchy. Previous research suggests that males treat different categories of rivals differently; competitive displays between males of similar rank are more frequent and intense than those between disparately ranked males. Here we test whether males also respond differently to male-male interactions in which they are not directly involved, using playbacks of the loud 'wahoo' calls exchanged between competing males in aggressive displays. We played paired sequences of vocal contests between two adjacently ranked and two disparately ranked males to ten subjects, half ranking below the signalers in the call sequences and half above. Subjects who ranked above the two signalers showed stronger responses than lower-ranking subjects. Higher-ranking subjects also responded more strongly to sequences involving disparately ranked, as opposed to adjacently ranked opponents, suggesting that they recognized those individuals' relative ranks. Strong responses to sequences between disparately ranked opponents might have occurred either because such contests typically involve resources of high fitness value (defense of meat, estrous females or infants vulnerable to infanticide) or because they indicate a sudden change in one contestant's condition. In contrast, subjects who ranked lower than the signalers responded equally strongly to both types of sequences. These subjects may have been able to distinguish between the two categories of opponents but did not respond differently to them because they had little to lose or gain by a rank reversal between males that already ranked higher than they did.  
  Address Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. dkitchen@psych.upenn.edu  
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  Language English Summary Language Original Title  
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  ISSN (down) 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:15164259 Approved no  
  Call Number refbase @ user @ Serial 687  
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Author Kitchen, D.; Bergman, T.; Cheney, D.; Nicholson, J.; Seyfarth, R. doi  openurl
  Title Comparing responses of four ungulate species to playbacks of baboon alarm calls Type Journal Article
  Year 2010 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 13 Issue 6 Pages 861-870  
  Keywords Biomedical and Life Sciences  
  Abstract A growing body of evidence suggests that a wide range of animals can recognize and respond appropriately to calls produced by other species. Social learning has been implicated as a possible mechanism by which heterospecific call recognition might develop. To examine whether familiarity and/or shared vulnerability with the calling species might influence the ability of sympatric species to distinguish heterospecific alarm calls, we tested whether four ungulate species (impala: Aepyceros melampus; tsessebe: Damaliscus lunatus; zebra: Equus burchelli; wildebeest: Connochaetes taurinus) could distinguish baboon (Papio hamadryas ursinus) alarm calls from other loud baboon calls produced during intra-specific aggressive interactions (‘contest’ calls). Overall, subjects’ responses were stronger following playback of alarm calls than contest calls. Of the species tested, impala showed the strongest responses and the greatest difference in composite response scores, suggesting they were best able to differentiate call types. Compared with the other ungulate species, impala are the most frequent associates of baboons. Moreover, like baboons, they are susceptible to both lion and leopard attacks, whereas leopards rarely take the larger ungulates. Although it seems possible that high rates of association and/or shared vulnerability may influence impala’s greater ability to distinguish among baboon call types, our results point to a stronger influence of familiarity. Ours is the first study to compare such abilities among several community members with variable natural histories, and we discuss future experiments that would more systematically examine development of these skills in young ungulates.  
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  Publisher Springer Berlin / Heidelberg Place of Publication Editor  
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  ISSN (down) 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5275  
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Author Seyfarth, R.M.; Cheney, D.L.; Bergman, T.J. doi  openurl
  Title Primate social cognition and the origins of language Type Journal Article
  Year 2005 Publication Trends in Cognitive Sciences Abbreviated Journal Trends. Cognit. Sci.  
  Volume 9 Issue 6 Pages 264-266  
  Keywords Animals; *Cognition; Humans; *Language; Papio; Psychological Theory; Social Behavior; *Social Perception  
  Abstract Are the cognitive mechanisms underlying language unique, or can similar mechanisms be found in other domains? Recent field experiments demonstrate that baboons' knowledge of their companions' social relationships is based on discrete-valued traits (identity, rank, kinship) that are combined to create a representation of social relations that is hierarchically structured, open-ended, rule-governed, and independent of sensory modality. The mechanisms underlying language might have evolved from the social knowledge of our pre-linguistic primate ancestors.  
  Address Departments of Biology and Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. seyfarth@psych.upenn.edu  
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  ISSN (down) 1364-6613 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:15925802 Approved no  
  Call Number refbase @ user @ Serial 343  
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Author Manser, M.B.; Seyfarth, R.M.; Cheney, D.L. openurl 
  Title Suricate alarm calls signal predator class and urgency Type
  Year 2002 Publication Trends in Cognitive Sciences Abbreviated Journal Trends. Cognit. Sci.  
  Volume 6 Issue 2 Pages 55-57  
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  ISSN (down) 1364-6613 ISBN Medium  
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  Notes PMID:15866180 Approved no  
  Call Number refbase @ user @ Serial 686  
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Author Bergman, T.J.; Beehner, J.C.; Cheney, D.L.; Seyfarth, R.M. doi  openurl
  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  
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  ISSN (down) 1095-9203 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:14615544 Approved no  
  Call Number refbase @ user @ Serial 689  
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Author Wittig, R.M.; Crockford, C.; Wikberg, E.; Seyfarth, R.M.; Cheney, D.L. doi  openurl
  Title Kin-mediated reconciliation substitutes for direct reconciliation in female baboons Type Journal Article
  Year 2007 Publication Proceedings. Biological sciences / The Royal Society Abbreviated Journal Proc Biol Sci  
  Volume 274 Issue 1613 Pages 1109-1115  
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  Abstract It has been hypothesized that group-living mammals engage in reconciliation (post-conflict affiliation between former opponents) to reduce the disruptive costs of aggression and restore opponents' tolerance to baseline levels. Recipients of aggression are sometimes reluctant to tolerate the proximity of a recent opponent, however, in apparent fear that aggression will be renewed. In such cases, reconciliatory behaviour by the aggressor's close kin may substitute for direct reconciliation. We describe a playback experiment with free-ranging baboons (Papio hamadryas ursinus) that examines whether friendly behaviour by the aggressor's kin can substitute for direct reconciliation by the aggressor herself. In the test condition, female subjects who had recently been threatened heard the friendly grunt of one of their aggressor's relatives, mimicking kin-mediated vocal reconciliation. In the control condition, subjects heard the grunt of a dominant female from a different matriline. Subjects responded significantly more strongly in test than in control trials. Moreover, in the next hour they were significantly more likely to tolerate the proximity of both their aggressor and the relative whose grunt they had heard. In contrast, subjects' behaviour towards both control females and other members of their aggressor's matriline was unaffected. We conclude that kin-mediated vocal reconciliation can substitute for direct reconciliation in baboons.  
  Address Department of Biology, University of Pennsylvania, Philadelphia, PA 19104-6018, USA  
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  ISSN (down) 0962-8452 ISBN Medium  
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  Notes PMID:17301022 Approved no  
  Call Number refbase @ user @ Serial 342  
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Author Fischer, J.; Cheney, D.L.; Seyfarth, R.M. doi  openurl
  Title Development of infant baboons' responses to graded bark variants Type Journal Article
  Year 2000 Publication Proceedings. Biological sciences / The Royal Society Abbreviated Journal Proc Biol Sci  
  Volume 267 Issue 1459 Pages 2317-2321  
  Keywords *Animal Communication; Animals; Behavior, Animal; Female; Male; Models, Psychological; Papio/growth & development/*physiology; *Vocalization, Animal  
  Abstract We studied the development of infant baboons' (Papio cynocephalus ursinus) responses to conspecific 'barks' in a free-ranging population in the Okavango Delta, Botswana. These barks grade from tonal, harmonically rich calls into calls with a more noisy, harsh structure. Typically, tonal variants are given when the signaller is at risk of losing contact with the group or a particular individual ('contact barks'), whereas harsh variants are given in response to predators ('alarm barks'). We conducted focal observations and playback experiments in which we presented variants of barks recorded from resident adult females. By six months of age, infants reliably discriminated between typical alarm and contact barks and they responded more strongly to intermediate alarm calls than to typical contact barks. Infants of six months and older also recognized their mothers by voice. The ability to discriminate between different call variants developed with increasing age. At two and a half months of age, infants failed to respond at all, whereas at four months they responded irrespective of the call type that was presented. At six months, infants showed adult-like responses by responding strongly to alarm barks but ignoring contact barks. We concluded that infants gradually learn to attach the appropriate meaning to alarm and contact barks.  
  Address Department of Psychology, University of Pennsylvania, 3815 Walnut Street, Philadelphia, PA 19104, USA. fischerj@eva.mpg.de  
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  ISSN (down) 0962-8452 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:11413649 Approved no  
  Call Number refbase @ user @ Serial 694  
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Author Cheney, D.L.; Seyfarth, R.M.; Silk, J.B. openurl 
  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  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN (down) 0735-7036 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:7758289 Approved no  
  Call Number refbase @ user @ Serial 348  
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Author Rendall, D.; Cheney, D.L.; Seyfarth, R.M. openurl 
  Title Proximate factors mediating “contact” calls in adult female baboons (Papio cynocephalus ursinus) and their infants Type Journal Article
  Year 2000 Publication Journal of comparative psychology (Washington, D.C. : 1983) Abbreviated Journal J Comp Psychol  
  Volume 114 Issue 1 Pages 36-46  
  Keywords Animals; Animals, Wild; Botswana; Female; *Maternal Behavior; Motivation; Orientation; Papio/*psychology; Social Environment; Sound Spectrography; *Vocalization, Animal  
  Abstract “Contact” calls are widespread in social mammals and birds, but the proximate factors that motivate call production and mediate their contact function remain poorly specified. Field study of chacma baboons (Papio cynocephalus ursinus) revealed that contact barks in adult females were motivated by separation both from the group at large and from their dependent infants. A variety of social and ecological factors affect the probability of separation from either one or both. Results of simultaneous observations and a playback experiment indicate that the contact function of calling between mothers and infants was mediated by occasional maternal retrieval rather than coordinated call exchange. Mothers recognized the contact barks of their own infants and often were strongly motivated to locate them. However, mothers did not produce contact barks in reply unless they themselves were at risk of becoming separated from the group.  
  Address Department of Psychology, University of Pennsylvania, USA. d.rendall@uleth.ca  
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  Series Volume Series Issue Edition  
  ISSN (down) 0735-7036 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:10739310 Approved no  
  Call Number refbase @ user @ Serial 695  
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