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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 (up) 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 Keiper, R.R.
Title Social structure Type Journal Article
Year 1986 Publication The Veterinary clinics of North America. Equine practice Abbreviated Journal (up) Vet Clin North Am Equine Pract
Volume 2 Issue 3 Pages 465-484
Keywords Animal Communication; Animals; Animals, Domestic; Animals, Wild; Dominance-Subordination; Female; *Hierarchy, Social; Homing Behavior; *Horses; Male; Sexual Behavior, Animal; *Social Behavior; *Social Dominance
Abstract Socially feral horses live in stable social groups characterized by one adult male, a number of adult females, and their offspring up to 2 years of age. Extra males either live by themselves or with other males in bachelor groups. The bands occupy nondefended home ranges that often overlap. Many abnormal behaviors seen in domestic horses occur because some aspect of their normal social behavior cannot be carried out in captivity.
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 0749-0739 ISBN Medium
Area Expedition Conference
Notes PMID:3492240 Approved no
Call Number refbase @ user @ Serial 675
Permanent link to this record