| Records |
| Author |
de Waal, F.B.M. |
| Title |
Animal Social Conflict |
Type |
Miscellaneous |
| Year |
1993 |
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| Call Number |
Equine Behaviour @ team @ |
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4894 |
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| Author |
de Waal, F.B.M. |
| Title |
Peacemaking Among Primates |
Type |
Miscellaneous |
| Year |
1989 |
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no |
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Equine Behaviour @ team @ |
Serial |
4924 |
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| Author |
de Waal, F.B.M. |
| Title |
Chimpanzee politics:power and sex among apes. |
Type |
Book Whole |
| Year |
1982 |
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Johns Hopkins University Press |
Place of Publication |
Baltimore |
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ISBN |
978-0801886560 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4857 |
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| Author |
de Waal, F.B.M.; Aureli, F. |
| Title |
Consolation, reconciliation, and a possible cognitive difference between macaque and chimpanzee |
Type |
Book Chapter |
| Year |
1996 |
Publication |
Reaching into Thought: The Minds of the Great Apes |
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Pages |
80–110. |
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| Abstract |
Russon,A.E.; Bard, K.A.; Parker, S.T. |
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Cambridge University Press |
Place of Publication |
Cambridge |
Editor |
Russon,A.E.; Bard, K.A.; Parker, S.T. |
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no |
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Equine Behaviour @ team @ |
Serial |
5060 |
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| Author |
de Waal, F.B.M.; Luttrell, L.M. |
| Title |
Mechanisms of social reciprocity in three primate species: Symmetrical relationship characteristics or cognition? |
Type |
Journal Article |
| Year |
1988 |
Publication |
Ethology and Sociobiology |
Abbreviated Journal |
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| Volume |
9 |
Issue |
2–4 |
Pages |
101-118 |
| Keywords |
Reciprocity; Agonistic intervention; Cognition; Chimpanzees; Macaques |
| Abstract |
Agonistic intervention behavior was observed in captive groups of chimpanzees (Pan troglodytes), rhesus monkeys (Macaca mulatta), and stumptail monkeys (M. arctoides). Reciprocity correlations of interventions were determined while removing from the data the effects of several symmetrical relationship characteristics, that is, matrillineal kinship, proximity relations, and same-sex combination. It was considered likely that if significant reciprocity persisted after controlling for these characteristics, the reciprocity was based on cognitive mechanisms. Statistical significance was tested by means of recently developed matrix permutation procedures. All three species exhibited significant reciprocity with regard to beneficial interventions, even after controlling for symmetrical traits. Harmful interventions were, however, reciprocal among chimpanzees only. This species showed a “revenge system”, that is, if A often intervened against B, B did the same to A. In contrast, both macaque species showed significantly inversed reciprocity in their harmful interventions: if A often intervened against B, B rarely intervened against A. Further analysis indicates that the strict hierarchy of macaques prevents them from achieving complete reciprocity. Compared to chimpanzees, macaques rarely intervene against higher ranking group members. The observed contrast can be partially explained on the basis of differences in available space, as indicated by a comparison of indoor and outdoor living conditions for the chimpanzee colony. Yet, even when such spatial factors are taken into account, substantial behavior differences between chimpanzees and macaques remain. |
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| ISSN |
0162-3095 |
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Approved |
no |
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Equine Behaviour @ team @ |
Serial |
5809 |
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| Author |
de Waal, F.B.; Uno, H.; Luttrell, L.M.; Meisner, L.F.; Jeannotte, L.A. |
| Title |
Behavioral retardation in a macaque with autosomal trisomy and aging mother |
Type |
Journal Article |
| Year |
1996 |
Publication |
American journal of mental retardation : AJMR |
Abbreviated Journal |
Am J Ment Retard |
| Volume |
100 |
Issue |
4 |
Pages |
378-390 |
| Keywords |
Animals; *Behavior, Animal; Brain/physiopathology; Female; Hydrocephalus/complications; Longitudinal Studies; Macaca mulatta/*genetics; Magnetic Resonance Imaging; Male; *Maternal Age; Psychomotor Disorders/*etiology; Social Behavior; Trisomy/*genetics; X Chromosome |
| Abstract |
The social development of a female rhesus monkey (Macaca mulatta) was followed from the day of birth until her death, at age 32 months. The subject, born to an older mother, had an extra autosome (karyotype: 43, XX, +18), an affliction that came about spontaneously. MRI scans revealed that she was also hydrocephalic. Compared to 23 female monkeys growing up under identical conditions, the subject showed serious motor deficiencies, a dramatic delay in the development of social behavior, poorly established dominance relationships, and greater than usual dependency on mother and kin. The subject was well-integrated into the social group, however. |
| Address |
University of Wisconsin-Madison, USA |
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English |
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0895-8017 |
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| Notes |
PMID:8718992 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
205 |
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| Author |
Flack, J.C.; de Waal, F.B.M.; Krakauer, D.C. |
| Title |
Social structure, robustness, and policing cost in a cognitively sophisticated species |
Type |
Journal Article |
| Year |
2005 |
Publication |
The American Naturalist |
Abbreviated Journal |
Am Nat |
| Volume |
165 |
Issue |
5 |
Pages |
E126-139 |
| Keywords |
Animals; *Behavior, Animal; Cognition; Conflict (Psychology); Female; Macaca nemestrina/*physiology; Male; Models, Biological; *Social Behavior |
| Abstract |
Conflict management is one of the primary requirements for social complexity. Of the many forms of conflict management, one of the rarest and most interesting is third-party policing, or intervening impartially to control conflict. Third-party policing should be hard to evolve because policers personally pay a cost for intervening, while the benefits are diffused over the whole group. In this study we investigate the incidence and costs of policing in a primate society. We report quantitative evidence of non-kin policing in the nonhuman primate, the pigtailed macaque. We find that policing is effective at reducing the intensity of or terminating conflict when performed by the most powerful individuals. We define a measure, social power consensus, that predicts effective low-cost interventions by powerful individuals and ineffective, relatively costly interventions by low-power individuals. Finally, we develop a simple probabilistic model to explore whether the degree to which policing can effectively reduce the societal cost of conflict is dependent on variance in the distribution of power. Our data and simple model suggest that third-party policing effectiveness and cost are dependent on power structure and might emerge only in societies with high variance in power. |
| Address |
Santa Fe Institute, Santa Fe, New Mexico 87501, USA. jflack@santafe.edu |
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English |
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1537-5323 |
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| Notes |
PMID:15795848 |
Approved |
no |
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refbase @ user @ |
Serial |
168 |
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| Author |
Dindo, M.; De Waal, F.B.M. |
| Title |
Partner effects on food consumption in brown capuchin monkeys |
Type |
Journal Article |
| Year |
2007 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
69 |
Issue |
4 |
Pages |
448-456 |
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| Abstract |
It has been claimed that capuchin monkeys (Cebus apella) show inequity aversion in relation to food rewards for a simple exchange task. However, other factors may affect the willingness of a monkey to consume foods of high or low value in the presence of a conspecific. In this study, pairs of monkeys were presented with unequally valued foods, but without any task-performance: they simply received the food under four experimental conditions. By looking at the rate of collection and consumption of low-valued cucumber slices we expected to see variation dependent on whether the partner either had 1) cucumber (equity), 2) grape (inequity), 3) inaccessible cucumber or 4) inaccessible grape. Testing 12 adult capuchin monkeys, our findings differed from those of other authors in that the monkeys failed to show negative reactions to inequity, but rather responded with scramble competition (i.e., fast food collection) in the presence of a conspecific without access to food. They also showed facilitated consumption in the presence of a conspecific consuming high-valued food. Possibly, (in)equity plays a different role if food serves as a reward for a task rather than if it is simply made available for consumption. Am. J. Primatol. 69:1-9, 2007. (c) 2006 Wiley-Liss, Inc. |
| Address |
Living Links, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia |
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English |
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0275-2565 |
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| Notes |
PMID:17146793 |
Approved |
no |
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refbase @ user @ |
Serial |
158 |
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| Author |
Brosnan, S.F.; Freeman, C.; De Waal, F.B.M. |
| Title |
Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys |
Type |
Journal Article |
| Year |
2006 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
68 |
Issue |
7 |
Pages |
713-724 |
| Keywords |
Animals; Behavior, Animal/*physiology; Cebus/*physiology; *Cooperative Behavior; Female; Food Preferences/physiology; Male; *Reward |
| Abstract |
It was recently demonstrated that capuchin monkeys notice and respond to distributional inequity, a trait that has been proposed to support the evolution of cooperation in the human species. However, it is unknown how capuchins react to inequitable rewards in an unrestricted cooperative paradigm in which they may freely choose both whether to participate and, within the bounds of their partner's behavior, which reward they will receive for their participation. We tested capuchin monkeys with such a design, using a cooperative barpull, which has been used with great success in the past. Contrary to our expectations, the equity of the reward distribution did not affect success or pulling behavior. However, the behavior of the partner in an unequal situation did affect overall success rates: pairs that had a tendency to alternate which individual received the higher-value food in unequal reward situations were more than twice as successful in obtaining rewards than pairs in which one individual dominated the higher-value food. This ability to equitably distribute rewards in inherently biased cooperative situations has profound implications for activities such as group hunts, in which multiple individuals work together for a single, monopolizable reward. |
| Address |
Living Links Center, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA. sbrosna@emory.edu |
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English |
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0275-2565 |
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| Notes |
PMID:16786518 |
Approved |
no |
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refbase @ user @ |
Serial |
160 |
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| Author |
Baker, K.C.; Seres, E.; Aureli, F.; De Waal, F.B. |
| Title |
Injury risks among chimpanzees in three housing conditions |
Type |
Journal Article |
| Year |
2000 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
51 |
Issue |
3 |
Pages |
161-175 |
| Keywords |
Aggression; *Animal Welfare; Animals; Female; *Housing, Animal; Male; *Pan troglodytes; Risk Assessment; Wounds and Injuries/*veterinary |
| Abstract |
Meeting the psychological needs of chimpanzees (Pan troglodytes) can be a challenge given their aggressiveness on the one hand and the complexity of their social lives on the other. It is unclear how to balance the need to provide opportunities for species-appropriate behavior against potential risks of injury chimpanzees may inflict on each other. This study evaluates the suggestion that simpler social environments protect chimpanzees from wounding. Over a two-year period all visible injuries to 46 adult males, 64 adult females, and 25 immature chimpanzees were recorded at the Yerkes Regional Primate Research Center. Approximately half of the subjects were mother-reared, and the rest were nursery-reared. Housing included compounds containing about 20 chimpanzees, interconnected indoor-outdoor runs for groups of up to 12 individuals, and smaller indoor-outdoor runs for pairs and trios. Annual wounding rates were calculated for serious wounds (extensive injuries and all those requiring veterinary intervention) as well as for minor wounds. Compound-housed chimpanzees incurred the highest level of minor wounding, but serious wounding levels were not affected by housing condition. Even with a period of dominance instability and elevated levels of wounding in one compound, compound chimpanzees were not injured more than those in smaller social groups over the long term. Nursery-reared females in moderate-sized groups were wounded more than mother-reared females. Also, nursery-reared males and females were wounded less often when paired with mother-reared companions. Overall, this study indicates that maintaining chimpanzees in pairs and trios would not be an effective means for reducing injuries. The management of wounding in chimpanzee colonies is influenced more by the sex and rearing composition of a colony. |
| Address |
Living Links Center, Yerkes Regional Primate Research Center, Emory University, Atlanta, Georgia 30322, USA. kateb@rmy.emory.edu |
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English |
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0275-2565 |
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| Notes |
PMID:10902665 |
Approved |
no |
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refbase @ user @ |
Serial |
188 |
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