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Author |
Gouzoules, S.; Gouzoules, H. |
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Title |
Kinship |
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Book Chapter |
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Year |
1987 |
Publication |
Primate societies |
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Pages |
299-305 |
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University of Chicago Press |
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Chicago |
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Smuts, B. B.; Cheney, D. L.; Seyfarth, R. M.; Wrangham, R. W.; Struhsaker T. T |
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Call Number |
Equine Behaviour @ team @ |
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5430 |
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Author |
Feh, C. |
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Title |
Etude du développement des relations sociales chez des étalons (Equus caballus) de race camargue et de leur contribution à l'organisation sociale du groupe |
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Manuscript |
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Year |
1987 |
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Diplôme de recherche universitaire: neurosciences comportementales: Université d'Aix-Marseille II. Faculté des sciences de Luminy Marseille (FRA)* 117p |
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Master's thesis |
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Université d'Aix-Marseille |
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Marseille |
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no |
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Equine Behaviour @ team @ |
Serial |
5485 |
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Author |
Siegel, H.S. |
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Title |
Effects of behavioural and physical stressors on immune responses. |
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Book Whole |
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Year |
1987 |
Publication |
Biology of Stress in Farm Animals |
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Martinus Nijhoff |
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London |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5994 |
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Author |
Tizard I. |
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Title |
An introduction to veterinary immunology. |
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Book Whole |
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Year |
1987 |
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WB Saunders Co. |
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Philadelphia |
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no |
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Equine Behaviour @ team @ |
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6000 |
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Author |
Povinelli DJ |
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Title |
Monkeys, apes, mirrors and minds: the evolution of self-awareness in primates |
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Journal Article |
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Year |
1987 |
Publication |
J. Hum. Evol. |
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Volume |
2 |
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Pages |
493 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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3025 |
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Author |
Tomasello, M.; Davis-Dasilva, M.; Camak, L.; Bard, K. |
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Title |
Observational learning of tool-use by young chimpanzees |
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Journal Article |
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Year |
1987 |
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Abbreviated Journal |
Human Evolution |
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Volume |
2 |
Issue |
2 |
Pages |
175-183 |
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Keywords |
Chimpanzees; Observational Learning; Tool-Use |
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Abstract |
In the current study two groups of young chimpanzees (4–6 and 8–9 years old) were given a T-bar and a food item that could only be reached by using the T-bar. Experimental subjects were given the opportunity to observe an adult using the stick as a tool to obtain the food; control subjects were exposed to the adult but were given no demonstration. Subjects in the older group did not learn to use the tool. Subjects in the younger group who were exposed to the demonstrator learned to use the stick as a tool much more readily than those who were not. None of the subjects demonstrated an ability to imitatively copy the demonstrator's precise behavioral strategies. More than simple stimulus enhancement was involved, however, since both groups manipulated the T-bar, but only experimental subjects used it in its function as a tool. Our findings complement naturalistic observations in suggesting that chimpanzee tool-use is in some sense «culturally transmitted» — though perhaps not in the same sense as social-conventional behaviors for which precise copying of conspecifics is crucial. |
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Kluwer Academic Publishers |
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English |
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ISSN |
0393-9375 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5915 |
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Author |
Pusey, A.E. |
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Title |
Sex-biased dispersal and inbreeding avoidance in birds and mammals |
Type |
Journal Article |
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Year |
1987 |
Publication |
Trends in Ecology & Evolution |
Abbreviated Journal |
Trends. Ecol. Evol |
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Volume |
2 |
Issue |
10 |
Pages |
295-299 |
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Abstract |
Sex differences in dispersal distance are widespread in birds and mammals, but the predominantly dispersing sex differs consistently between the classes. There has been persistent debate over the relative importance of two factors -- intrasexual competition and inbreeding avoidance -- in producing sex-biased dispersal, and over the sources of the difference in dispersal patterns between the two classes. Recent studies cast new light on these questions. |
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ISSN |
0169-5347 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5326 |
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Author |
Klingel H, |
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Title |
Unpaarhufer, Pferde |
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Journal Article |
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Year |
1987 |
Publication |
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Abbreviated Journal |
in Grzimek B (ed): Grzimeks Enzyklopädie Säugetiere |
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Volume |
4 |
Issue |
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Pages |
548-592, Kindler |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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1319 |
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Author |
Olivier W, |
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Title |
Is it possible to bring back the quagga? |
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Journal Article |
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Year |
1987 |
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Abbreviated Journal |
Roan News |
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Volume |
4 |
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Pages |
1-2 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1435 |
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Author |
Rumbaugh, D.M.; Savage-Rumbaugh, S.; Hegel, M.T. |
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Title |
Summation in the chimpanzee (Pan troglodytes) |
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Journal Article |
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Year |
1987 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
13 |
Issue |
2 |
Pages |
107-115 |
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Keywords |
Animals; Choice Behavior; *Cognition; Male; *Mathematics; *Pan troglodytes; Visual Perception |
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Abstract |
In this research, we asked whether 2 chimpanzee (Pan troglodytes) subjects could reliably sum across pairs of quantities to select the greater total. Subjects were allowed to choose between two trays of chocolates. Each tray contained two food wells. To select the tray containing the greater number of chocolates, it was necessary to sum the contents of the food wells on each tray. In experiments where food wells contained from zero to four chocolates, the chimpanzees chose the greater value of the summed wells on more than 90% of the trials. In the final experiment, the maximum number of chocolates assigned to a food well was increased to five. Choice of the tray containing the greater sum still remained above 90%. In all experiments, subjects reliably chose the greater sum, even though on many trials a food well on the “incorrect” tray held more chocolates than either single well on the “correct” tray. It was concluded that without any known ability to count, these chimpanzees used some process of summation to combine spatially separated quantities. Speculation regarding the basis for summation includes consideration of perceptual fusion of pairs of quantities and subitization. |
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English |
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0097-7403 |
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Notes |
PMID:3572305 |
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Call Number |
Equine Behaviour @ team @ |
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2785 |
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