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Author |
Subiaul, F.; Cantlon, J.F.; Holloway, R.L.; Terrace, H.S. |
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Title |
Cognitive imitation in rhesus macaques |
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Journal Article |
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Year |
2004 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
305 |
Issue |
5682 |
Pages |
407-410 |
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Keywords |
Animals; *Cognition; *Imitative Behavior; *Learning; Macaca mulatta/*physiology/psychology; Male |
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Abstract |
Experiments on imitation typically evaluate a student's ability to copy some feature of an expert's motor behavior. Here, we describe a type of observational learning in which a student copies a cognitive rule rather than a specific motor action. Two rhesus macaques were trained to respond, in a prescribed order, to different sets of photographs that were displayed on a touch-sensitive monitor. Because the position of the photographs varied randomly from trial to trial, sequences could not be learned by motor imitation. Both monkeys learned new sequences more rapidly after observing an expert execute those sequences than when they had to learn new sequences entirely by trial and error. |
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Department of Anthropology, Columbia University, New York, NY 10027, USA. subiaul@aol.com |
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1095-9203 |
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PMID:15256673 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2839 |
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Author |
Clutton-Brock, T.H.; Russell, A.F.; Sharpe, L.L.; Brotherton, P.N.; McIlrath, G.M.; White, S.; Cameron, E.Z. |
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Title |
Effects of helpers on juvenile development and survival in meerkats |
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Journal Article |
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Year |
2001 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
293 |
Issue |
5539 |
Pages |
2446-2449 |
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Keywords |
Animals; Breeding; Carnivora/growth & development/*physiology; *Cooperative Behavior; Feeding Behavior; Female; Male; Survival Rate; *Weight Gain |
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Abstract |
Although breeding success is known to increase with group size in several cooperative mammals, the mechanisms underlying these relationships are uncertain. We show that in wild groups of cooperative meerkats, Suricata suricatta, reductions in the ratio of helpers to pups depress the daily weight gain and growth of pups and the daily weight gain of helpers. Increases in the daily weight gain of pups are associated with heavier weights at independence and at 1 year of age, as well as with improved foraging success as juveniles and higher survival rates through the first year of life. These results suggest that the effects of helpers on the fitness of pups extend beyond weaning and that helpers may gain direct as well as indirect benefits by feeding pups. |
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Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. thcb@hermes.cam.ac.uk |
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0036-8075 |
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PMID:11577235 |
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Call Number |
refbase @ user @ |
Serial |
414 |
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Author |
Macfadden, B.J. |
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Title |
Evolution. Fossil horses--evidence for evolution |
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Journal Article |
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Year |
2005 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
307 |
Issue |
5716 |
Pages |
1728-1730 |
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Keywords |
Animals; Body Size; DNA, Mitochondrial; Diet; *Equidae/anatomy & histology/classification/genetics; *Evolution; Feeding Behavior; *Fossils; *Horses/anatomy & histology/classification/genetics; Paleodontology; Phylogeny; Time; Tooth/anatomy & histology |
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Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA. bmacfadd@flmnh.ufl.edu |
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1095-9203 |
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PMID:15774746 |
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no |
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1892 |
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Author |
Williams, N. |
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Title |
Evolutionary psychologists look for roots of cognition |
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Year |
1997 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
275 |
Issue |
5296 |
Pages |
29-30 |
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Keywords |
Animals; *Behavior, Animal; Birds; *Cognition; *Evolution; Female; Humans; Macaca mulatta/psychology; Male; Memory; Reward; *Social Sciences |
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0036-8075 |
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PMID:8999531 |
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Call Number |
Equine Behaviour @ team @ |
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2845 |
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Author |
Bergman, T.J.; Beehner, J.C.; Cheney, D.L.; Seyfarth, R.M. |
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Title |
Hierarchical classification by rank and kinship in baboons |
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Journal Article |
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Year |
2003 |
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Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
302 |
Issue |
5648 |
Pages |
1234-1236 |
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Keywords |
Animals; Animals, Wild; Botswana; *Cognition; Family; Female; *Hierarchy, Social; Language; *Papio/psychology; Social Dominance; Vocalization, Animal |
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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. |
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Address |
Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA. thore@sas.upenn.edu |
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1095-9203 |
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PMID:14615544 |
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no |
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Call Number |
refbase @ user @ |
Serial |
689 |
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Author |
Gary C. Jahn; Craig Packer,Robert Heinsohn |
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Title |
Lioness leadership |
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Journal Article |
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Year |
1996 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
271 |
Issue |
5253 |
Pages |
1216-1219 |
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Keywords |
Animals; *Behavior; Animal; Cooperative Behavior; Female; Lions/*psychology; Territoriality |
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0036-8075 |
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Call Number |
Equine Behaviour @ team @ Jahn1996 |
Serial |
2073 |
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Author |
Seyfarth, R.M.; Cheney, D.L.; Marler, P. |
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Title |
Monkey responses to three different alarm calls: evidence of predator classification and semantic communication |
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Journal Article |
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Year |
1980 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
210 |
Issue |
4471 |
Pages |
801-803 |
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Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Cercopithecidae/*physiology; *Fear; Female; Male; Predatory Behavior; Vocalization, Animal |
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Abstract |
Vervet monkeys give different alarm calls to different predators. Recordings of the alarms played back when predators were absent caused the monkeys to run into trees for leopard alarms, look up for eagle alarms, and look down for snake alarms. Adults call primarily to leopards, martial eagles, and pythons, but infants give leopard alarms to various mammals, eagle alarms to many birds, and snake alarms to various snakelike objects. Predator classification improves with age and experience. |
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0036-8075 |
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PMID:7433999 |
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refbase @ user @ |
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351 |
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Author |
Morell, V. |
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Title |
Nicola Clayton profile. Nicky and the jays |
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2007 |
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Science (New York, N.Y.) |
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Science |
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Volume |
315 |
Issue |
5815 |
Pages |
1074-1075 |
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Keywords |
Animals; *Behavior, Animal; *Cognition; England; History, 20th Century; History, 21st Century; Intelligence; Memory; Passeriformes/*physiology; Portraits |
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1095-9203 |
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PMID:17322042 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2833 |
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Author |
Galdikas, B.M. |
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Title |
Orangutan tool use |
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Journal Article |
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Year |
1989 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
243 |
Issue |
4888 |
Pages |
152 |
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Keywords |
Animals; Animals, Wild; *Behavior, Animal; Cognition; *Hominidae; Humans; *Pongo pygmaeus |
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0036-8075 |
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PMID:2911726 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2847 |
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Permanent link to this record |
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Author |
Brannon, E.M.; Terrace, H.S. |
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Title |
Ordering of the numerosities 1 to 9 by monkeys |
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Journal Article |
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Year |
1998 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
282 |
Issue |
5389 |
Pages |
746-749 |
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Keywords |
Animals; *Discrimination (Psychology); Macaca mulatta/*psychology; *Mathematics; *Mental Processes |
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Abstract |
A fundamental question in cognitive science is whether animals can represent numerosity (a property of a stimulus that is defined by the number of discriminable elements it contains) and use numerical representations computationally. Here, it was shown that rhesus monkeys represent the numerosity of visual stimuli and detect their ordinal disparity. Two monkeys were first trained to respond to exemplars of the numerosities 1 to 4 in an ascending numerical order (1 --> 2 --> 3 --> 4). As a control for non-numerical cues, exemplars were varied with respect to size, shape, and color. The monkeys were later tested, without reward, on their ability to order stimulus pairs composed of the novel numerosities 5 to 9. Both monkeys responded in an ascending order to the novel numerosities. These results show that rhesus monkeys represent the numerosities 1 to 9 on an ordinal scale. |
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Department of Psychology, Columbia University, New York, NY 10027, USA. liz@psych.columbia.edu |
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0036-8075 |
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PMID:9784133 |
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Call Number |
refbase @ user @ |
Serial |
606 |
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