| Records |
| Author |
de Waal, F.B.M. |
| Title |
Animal Social Conflict |
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Miscellaneous |
| Year |
1993 |
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Equine Behaviour @ team @ |
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4894 |
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| Author |
de Waal, F.B.M. |
| Title |
Peacemaking Among Primates |
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Miscellaneous |
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1989 |
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Equine Behaviour @ team @ |
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4924 |
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| Author |
Call, J.; Aureli, F.; de Waal, F.B.M. |
| Title |
Postconflict third-party affiliation in stumptailed macaques |
Type |
Journal Article |
| Year |
2002 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
63 |
Issue |
2 |
Pages |
209-216 |
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Stumptailed macaques, Macaca arctoides, are characterized by high levels of postconflict affiliative contacts between opponents. We investigated the occurrence of postconflict affiliative contacts between opponents and third parties that were not involved in the original conflict. We collected 10-min focal observations during postconflict and control periods in which we recorded all aggressive and affiliative behaviours between opponents and third parties. We distinguished three types of third parties depending on the relationship with the focal animal: own kin, opponent's kin and individuals unrelated to both opponents. We analysed the interactions with third parties separately, while distinguishing two classes of affiliative behaviours: (1) allogrooming and contact sitting and (2) sociosexual behaviours (e.g. genital inspection). The macaques showed differences between postconflict and control periods in their affiliative contacts with third parties. Aggressors received more postconflict grooming and contact sitting from their opponents' kin, received more sociosexual behaviour from their own kin and unrelated individuals, and directed more sociosexual behaviour to unrelated individuals. Victims received and directed less postconflict grooming from and towards their own kin. They received more postconflict sociosexual behaviour from all partners except their own kin and directed more sociosexual behaviour to all partners except the opponent's kin. This study establishes the occurrence of multiple postconflict triadic affiliation in stumptailed macaques, and is the first to show that victims receive contacts from third parties in a cercopithecine species, a behaviour previously described only in chimpanzees. It also highlights the importance of analysing the different affiliative behaviours separately in postconflict situations. Otherwise, many of the patterns we report, especially those involving victims, would have been missed. |
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refbase @ user @ |
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304 |
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| Author |
de Waal, F.B.M. |
| Title |
Chimpanzee politics:power and sex among apes. |
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1982 |
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Johns Hopkins University Press |
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Baltimore |
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978-0801886560 |
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no |
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Equine Behaviour @ team @ |
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4857 |
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| Author |
de Waal, F.B.M. |
| Title |
Putting the Altruism Back into Altruism: The Evolution of Empathy |
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Journal Article |
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2008 |
Publication |
Annual Review of Psychology |
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Annu Rev Psychol |
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59 |
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1 |
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279-300 |
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Evolutionary theory postulates that altruistic behavior evolved for the return-benefits it bears the performer. For return-benefits to play a motivational role, however, they need to be experienced by the organism. Motivational analyses should restrict themselves, therefore, to the altruistic impulse and its knowable consequences. Empathy is an ideal candidate mechanism to underlie so-called directed altruism, i.e., altruism in response to anothers's pain, need, or distress. Evidence is accumulating that this mechanism is phylogenetically ancient, probably as old as mammals and birds. Perception of the emotional state of another automatically activates shared representations causing a matching emotional state in the observer. With increasing cognition, state-matching evolved into more complex forms, including concern for the other and perspective-taking. Empathy-induced altruism derives its strength from the emotional stake it offers the self in the other's welfare. The dynamics of the empathy mechanism agree with predictions from kin selection and reciprocal altruism theory. |
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Annual Reviews |
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0066-4308 |
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doi: 10.1146/annurev.psych.59.103006.093625 |
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Equine Behaviour @ team @ |
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5058 |
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de Waal, F.B.M.; Aureli, F. |
| Title |
Consolation, reconciliation, and a possible cognitive difference between macaque and chimpanzee |
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Book Chapter |
| Year |
1996 |
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Reaching into Thought: The Minds of the Great Apes |
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80–110. |
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Russon,A.E.; Bard, K.A.; Parker, S.T. |
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Cambridge University Press |
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Cambridge |
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Russon,A.E.; Bard, K.A.; Parker, S.T. |
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Equine Behaviour @ team @ |
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5060 |
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de Waal, F.B.M.; Luttrell, L.M. |
| Title |
Mechanisms of social reciprocity in three primate species: Symmetrical relationship characteristics or cognition? |
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Journal Article |
| Year |
1988 |
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Ethology and Sociobiology |
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9 |
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2–4 |
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101-118 |
| Keywords |
Reciprocity; Agonistic intervention; Cognition; Chimpanzees; Macaques |
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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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0162-3095 |
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Equine Behaviour @ team @ |
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5809 |
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de Waal, F.B.M.; Ferrari, P.F. |
| Title |
Towards a bottom-up perspective on animal and human cognition |
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Journal Article |
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2010 |
Publication |
Trends in Cognitive Sciences |
Abbreviated Journal |
Trends Cognit. Sci. |
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14 |
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5 |
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201-207 |
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Over the last few decades, comparative cognitive research has focused on the pinnacles of mental evolution, asking all-or-nothing questions such as which animals (if any) possess a theory of mind, culture, linguistic abilities, future planning, and so on. Research programs adopting this top-down perspective have often pitted one taxon against another, resulting in sharp dividing lines. Insight into the underlying mechanisms has lagged behind. A dramatic change in focus now seems to be under way, however, with increased appreciation that the basic building blocks of cognition might be shared across a wide range of species. We argue that this bottom-up perspective, which focuses on the constituent capacities underlying larger cognitive phenomena, is more in line with both neuroscience and evolutionary biology. |
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1364-6613 |
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Equine Behaviour @ team @ |
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5857 |
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Bonnie, K.E.; Horner, V.; Whiten, A.; de Waal, F.B.M. |
| Title |
Spread of arbitrary conventions among chimpanzees: a controlled experiment |
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Journal Article |
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2007 |
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Proceedings. Biological sciences / The Royal Society |
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Proc Biol Sci |
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274 |
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1608 |
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367-372 |
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Wild chimpanzees (Pan troglodytes) have a rich cultural repertoire--traditions common in some communities are not present in others. The majority of reports describe functional, material traditions, such as tool use. Arbitrary conventions have received far less attention. In the same way that observations of material culture in wild apes led to experiments to confirm social transmission and identify underlying learning mechanisms, experiments investigating how arbitrary habits or conventions arise and spread within a group are also required. The few relevant experimental studies reported thus far have relied on cross-species (i.e. human-ape) interaction offering limited ecological validity, and no study has successfully generated a tradition not involving tool use in an established group. We seeded one of two rewarded alternative endpoints to a complex sequence of behaviour in each of two chimpanzee groups. Each sequence spread in the group in which it was seeded, with many individuals unambiguously adopting the sequence demonstrated by a group member. In one group, the alternative sequence was discovered by a low ranking female, but was not learned by others. Since the action-sequences lacked meaning before the experiment and had no logical connection with reward, chimpanzees must have extracted both the form and benefits of these sequences through observation of others. |
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Living Links, Yerkes National Primate Research Center, Atlanta, GA 30329, USA. kebonni@emory.edu |
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0962-8452 |
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PMID:17164200 |
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refbase @ user @ |
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157 |
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Dindo, M.; De Waal, F.B.M. |
| Title |
Partner effects on food consumption in brown capuchin monkeys |
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Journal Article |
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2007 |
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American journal of primatology |
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Am. J. Primatol. |
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69 |
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4 |
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448-456 |
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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. |
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Living Links, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia |
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0275-2565 |
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PMID:17146793 |
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refbase @ user @ |
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158 |
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