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Westergaard, G.C.; Liv, C.; Rocca, A.M.; Cleveland, A.; Suomi, S.J. |
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Title  |
Tufted capuchins (Cebus apella) attribute value to foods and tools during voluntary exchanges with humans |
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Journal Article |
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Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
7 |
Issue |
1 |
Pages |
19-24 |
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Keywords |
Animals; Cebus/*physiology; *Food; Humans; *Object Attachment; *Social Behavior |
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Abstract |
This research examined exchange and value attribution in tufted capuchin monkeys ( Cebus apella). We presented subjects with opportunities to obtain various foods and a tool from an experimenter in exchange for the foods or tool in the subjects' possession. The times elapsed before the first chow biscuits were expelled and/or an exchange took place were recorded as the dependent measures. Laboratory chow biscuits, grapes, apples, and a metal bolt (a tool used to probe for syrup) were used as experimental stimuli. The subjects demonstrated the ability to recognize that exchanges could occur when an experimenter was present with a desirable food. Results indicate that subjects exhibited significant variation in their willingness to barter based upon the types of foods that were both in their possession and presented by the experimenter. Subjects more readily traded chow biscuits for fruit, and more readily traded apples for grapes than grapes for apples. During the exchange of tools and food, the subjects preferred the following in descending order when the probing apparatus was baited with sweet syrup: grapes, metal bolts, and chow biscuits. However when the apparatus was not baited, the values changed to the following in descending order: grapes, chow, and metal bolts. These results indicate that tufted capuchins recognize opportunities to exchange and engage in a simple barter system whereby low-valued foods are readily traded for more highly valued food. Furthermore, these capuchins demonstrate that their value for a tool changes depending upon its utility. |
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Division of Research and Development, LABS of Virginia, Inc., 95 Castle Hall Road, P.O. Box 557, Yemassee, SC 29945, USA. Gwprimate@netscape.net |
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1435-9448 |
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PMID:12884078 |
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Call Number |
Equine Behaviour @ team @ |
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2562 |
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Author |
Davies, R.B.; Clark, G.G. |
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Title |
Trypanosomes from elk and horse flies in New Mexico |
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Journal Article |
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Year |
1974 |
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Journal of Wildlife Diseases |
Abbreviated Journal |
J Wildl Dis |
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10 |
Issue |
1 |
Pages |
63-65 |
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Keywords |
Animals; *Artiodactyla; Blood/microbiology; *Diptera; Ecology; *Insect Vectors; New Mexico; Trypanosoma/*isolation & purification; Trypanosomiasis/microbiology/*veterinary |
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0090-3558 |
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PMID:4810218 |
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Equine Behaviour @ team @ |
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2709 |
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Author |
Beer C.G. |
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Title |
Trial and error in the evolution of cognition |
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Journal Article |
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Year |
1995 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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35 |
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215-224 |
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refbase @ user @ |
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3455 |
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Peltzer, K.; Mabilu, M.G.; Mathoho, S.F.; Nekhwevha, A.P.; Sikhwivhilu, T.; Sinthumule, T.S. |
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Title |
Trauma history and severity of gambling involvement among horse-race gamblers in a South African gambling setting |
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Journal Article |
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Year |
2006 |
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Psychological Reports |
Abbreviated Journal |
Psychol Rep |
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99 |
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2 |
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472-476 |
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Adult; African Continental Ancestry Group/*psychology/statistics & numerical data; Aged; Aged, 80 and over; Cross-Sectional Studies; Female; Gambling/*psychology; Humans; *Life Change Events; Male; Middle Aged; Personality Inventory; Risk Factors; *Social Environment; Socioeconomic Factors; South Africa; Statistics; Stress Disorders, Post-Traumatic/epidemiology/*psychology |
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The purpose of this study was to ascertain the frequency of gambling involvement and the prevalence of problem gambling among horse race gamblers and to discover whether problem gambling in this sample is associated with a history of trauma. Among a sample of 266 South African horse-race gamblers (94% men and 6% women, Mage 46.8 yr., SD = 13.9, range 18-85 years), 31.2% were classified as probable pathological gamblers and 19.9% with problem gambling. Major weekly gambling activities included racetrack betting (82%), purchase of lottery tickets or scratch tickets (35%), purchase of sports lottery tickets (23%), and using casino type games (18%). Trauma history was significantly associated with gambling severity. |
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Human Sciences Research Council, University of Limpopo, Pretoria, South Africa. KPeltzer@hsrc.ac.za |
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0033-2941 |
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PMID:17153816 |
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1850 |
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Cleveland, A.; Rocca, A.M.; Wendt, E.L.; Westergaard, G.C. |
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Title |
Transport of tools to food sites in tufted capuchin monkeys (Cebus apella) |
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Journal Article |
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Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
7 |
Issue |
3 |
Pages |
193-198 |
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Keywords |
Animals; *Association Learning; Cebus/*psychology; *Concept Formation; *Feeding Behavior; Female; Male; *Problem Solving |
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Abstract |
Tool use and transport represent cognitively important aspects of early hominid evolution, and nonhuman primates are often used as models to examine the cognitive, ecological, morphological and social correlates of these behaviors in order to gain insights into the behavior of our early human ancestors. In 2001, Jalles-Filho et al. found that free-ranging capuchin monkeys failed to transport tools (stones) to food sites (nuts), but transported the foods to the tool sites. This result cast doubt on the usefulness of Cebus to model early human tool-using behavior. In this study, we examined the performance of six captive tufted capuchin monkeys (Cebus apella) in a tool transport task. Subjects were provided with the opportunity to transport two different tools to fixed food reward sites when the food reward was visible from the tool site and when the food reward was not visible from the tool site. We found that the subjects quickly and readily transported probing tools to an apparatus baited with syrup, but rarely transported stones to a nut-cracking apparatus. We suggest that the performance of the capuchins here reflects an efficient foraging strategy, in terms of energy return, among wild Cebus monkeys. |
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Alpha Genesis, 95 Castle Hall Road, P.O. Box 557, Yemassee, SC 29945, USA |
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1435-9448 |
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Notes |
PMID:15022055 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2539 |
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Author |
Judge, N.G. |
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Title |
Transport of horses |
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Journal Article |
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Year |
1969 |
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Australian Veterinary Journal |
Abbreviated Journal |
Aust Vet J |
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45 |
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10 |
Pages |
465-469 |
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Aircraft; Animals; Australia; Automobiles; Behavior, Animal; Equipment and Supplies/veterinary; *Horses; Methods; *Movement; Ships; Veterinary Medicine |
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0005-0423 |
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PMID:5408645 |
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refbase @ user @ |
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1968 |
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Author |
Shuster, G.; Sherman, P.W. |
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Title |
Tool use by naked mole-rats |
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Journal Article |
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1998 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
1 |
Issue |
1 |
Pages |
71-74 |
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Abstract |
Naked mole-rats (Heterocephalus glaber, Rodentia: Bathyergidae) excavate extensive subterranean burrows with their procumbent incisors. Captive individuals often place a wood shaving or tuber husk behind their incisor teeth and in front of their lips and molar teeth while gnawing on substrates that yield fine particulate debris. This oral barrier may prevent choking or aspiration of foreign material. Consistent use of tools has rarely been reported in rodents. |
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Equine Behaviour @ team @ |
Serial |
3367 |
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Author |
Westergaard, G.C.; Liv, C.; Chavanne, T.J.; Suomi, S.J. |
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Title |
Token-mediated tool-use by a tufted capuchin monkey (Cebus apella) |
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Journal Article |
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Year |
1998 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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1 |
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2 |
Pages |
101-106 |
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This research examined token-mediated tool-use in a tufted capuchin monkey (Cebus apella). We conducted five experiments. In experiment 1 we examined the use of plastic color-coded chips to request food, and in experiments 2-5 we examined the use of color-coded chips to request tools. Our subject learned to use chips to request tools following the same general pattern seen in great apes performing analogous tasks, that is, initial discrimination followed by an understanding of the relationship among tokens, tools, and their functions. Our findings are consistent with the view that parallel representational processes underlie the tool-related behavior of capuchins and great apes. |
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Equine Behaviour @ team @ |
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3152 |
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Author |
Westergaard, G.C.; Evans, T.A.; Howell, S. |
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Title |
Token mediated tool exchange between tufted capuchin monkeys (Cebus apella) |
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Journal Article |
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Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Three experiments were conducted to test whether a pair of tufted capuchin monkeys (Cebus apella) could generalize their ability to exchange tokens and tool objects with a human experimenter to similar exchanges with a conspecific partner. Monkeys were tested in side-by-side enclosures, one enclosure containing a tool-use apparatus and one or more token(s), and the other enclosure containing one or more tool object(s). The monkeys willingly transferred tokens and tools to a conspecific with little practice. Following a small amount of training, we also found that the monkeys would select situation-appropriate tokens to exchange for specific tools, but did not select appropriate tool objects in response to another monkey's token transfers. Implications regarding role reversal are discussed. |
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Alpha Genesis, Inc., 95 Castle Hall Road, P.O. Box 557, Yemassee, SC, 29945, USA |
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1435-9448 |
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PMID:17345056 |
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Equine Behaviour @ team @ |
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2415 |
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Author |
Kräußlich, H.; Brem, G. |
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Tierzucht und allgemeine Landwirtschaftslehre für Tiermediziner |
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Book Whole |
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1997 |
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Enke |
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Stuttgart |
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Equine Behaviour @ team @ |
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6542 |
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