| Records |
| Author |
de Waal, F.B.; Berger, M.L. |
| Title |
Payment for labour in monkeys |
Type |
Journal Article |
| Year |
2000 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
404 |
Issue |
6778 |
Pages |
563 |
| Keywords |
Animals; Cebus/*physiology; *Cooperative Behavior; Evolution; *Feeding Behavior; Female; Male; Reward |
| Abstract |
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| Address |
Living Links, Yerkes Regional Primate Research Center, and Department of Psychology, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu |
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English |
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Edition |
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| ISSN |
0028-0836 |
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| Notes |
PMID:10766228 |
Approved  |
no |
| Call Number |
refbase @ user @ |
Serial |
190 |
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| Author |
Parr, L.A.; Winslow, J.T.; Hopkins, W.D.; de Waal, F.B. |
| Title |
Recognizing facial cues: individual discrimination by chimpanzees (Pan troglodytes) and rhesus monkeys (Macaca mulatta) |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
114 |
Issue |
1 |
Pages |
47-60 |
| Keywords |
Animals; *Discrimination Learning; *Facial Expression; Female; Macaca mulatta/*psychology; Male; Mental Recall; Pan troglodytes/*psychology; Perceptual Masking; *Social Perception; Species Specificity |
| Abstract |
Faces are one of the most salient classes of stimuli involved in social communication. Three experiments compared face-recognition abilities in chimpanzees (Pan troglodytes) and rhesus monkeys (Macaca mulatta). In the face-matching task, the chimpanzees matched identical photographs of conspecifics' faces on Trial 1, and the rhesus monkeys did the same after 4 generalization trials. In the individual-recognition task, the chimpanzees matched 2 different photographs of the same individual after 2 trials, and the rhesus monkeys generalized in fewer than 6 trials. The feature-masking task showed that the eyes were the most important cue for individual recognition. Thus, chimpanzees and rhesus monkeys are able to use facial cues to discriminate unfamiliar conspecifics. Although the rhesus monkeys required many trials to learn the tasks, this is not evidence that faces are not as important social stimuli for them as for the chimpanzees. |
| Address |
Department of Psychology, Emory University. parr@rmy.emory.edu |
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English |
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Edition |
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| ISSN |
0735-7036 |
ISBN |
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Conference |
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| Notes |
PMID:10739311 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
191 |
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| Author |
de Waal, F.B. |
| Title |
The end of nature versus nurture |
Type |
Journal Article |
| Year |
1999 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
| Volume |
281 |
Issue |
6 |
Pages |
94-99 |
| Keywords |
Animals; *Behavior; Behavior, Animal; Ecology; *Environment; Ethology; Evolution; Female; *Genetics; Humans; Instinct; Learning; Male; Sex Characteristics; Twin Studies |
| Abstract |
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| Address |
Living Links Center, Yerkes Regional Primate Research Center, Atlanta, USA |
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Place of Publication |
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English |
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Edition |
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| ISSN |
0036-8733 |
ISBN |
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| Notes |
PMID:10614071 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
192 |
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| Author |
Lilienfeld, S.O.; Gershon, J.; Duke, M.; Marino, L.; de Waal, F.B. |
| Title |
A preliminary investigation of the construct of psychopathic personality (psychopathy) in chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
1999 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
113 |
Issue |
4 |
Pages |
365-375 |
| Keywords |
Age Factors; Analysis of Variance; Animals; Antisocial Personality Disorder/*diagnosis/psychology; Ethology/*methods; Female; Male; Observer Variation; Pan troglodytes/*psychology; Psychiatric Status Rating Scales/*standards; Reproducibility of Results; Sex Characteristics; *Social Behavior |
| Abstract |
Although the construct of psychopathy has received considerable attention in humans, its relevance to other animals is largely unknown. We developed a measure of psychopathy for use in chimpanzees (Pan troglodytes), the Chimpanzee Psychopathy Measure (CPM), and asked 6 raters to complete this index on 34 chimpanzees. The CPM (a) demonstrated satisfactory interrater reliability and internal consistency; (b) exhibited marginally significant sex differences (males > females); (c) correlated positively with measures of extraversion, agreeableness, and observational ratings of agonism, sexual activity, daring behaviors, teasing, silent bluff displays, and temper tantrums, and negatively with observational ratings of generosity; and (d) demonstrated incremental validity above and beyond a measure of dominance. Although further validation of the CPM is needed, these findings suggest that the psychopathy construct may be relevant to chimpanzees. |
| Address |
Department of Psychology, Emory University, Atlanta, Georgia 30322, USA. scott@ss.emory.edu |
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English |
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Edition |
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0735-7036 |
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| Notes |
PMID:10608560 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
193 |
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| Author |
Call, J.; Aureli,F.; de Waal, F.B. M. |
| Title |
Reconciliation patterns among stumptailed macaques: a multivariate approach |
Type |
Journal Article |
| Year |
1999 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
58 |
Issue |
1 |
Pages |
165-172 |
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| Abstract |
This study focused on two aspects of the dynamics of reconciliation in stumptailed macaques, Macaca arctoides. First, we investigated the combined effects of multiple variables (i.e. sex, age, rank, conflict intensity, outcome, or number of participants, interopponent distance, kinship and friendship) on the occurrence of reconciliation. Second, we investigated whether opponents used different behaviour patterns in their postconflict reunions depending on the characteristics of their conflicts or their relationship with their opponents. We studied a multimale, multifemale group of 38 stumptailed macaques housed in a large outdoor compound. Three types of data were collected: (1) instantaneous scan sampling of contact sitting to infer 'friendship'; (2) ad libitum data on bared-teeth and teeth-chattering displays to infer dominance rank; (3) 10-min focal observations during postconflict (PC) and matched control (MC) periods in which we recorded interopponent distance at the beginning of the observation and all aggressive and affiliative behaviours between former opponents. Our study confirmed the high conciliatory tendency of stumptailed macaques previously reported for other groups. A stepwise logistic regression revealed that initial interopponent distance in PC, friendship and kinship were the only factors that independently contributed to explain the occurrence of reconciliation. Two main clusters of postconflict behavioural patterns emerged: allogrooming+contact sitting and sociosexual behaviours (e.g. hold-bottom). It is hypothesized that postconflict allogrooming and contact sitting may be used for the maintenance of valuable relationships, whereas sociosexual behaviours may be used more indiscriminately by any pair of opponents as a buffering mechanism to prevent immediate recurrence of aggression. Copyright 1999 The Association for the Study of Animal Behaviour. |
| Address |
School of Biological Sciences, University of Liverpool |
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English |
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0003-3472 |
ISBN |
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Conference |
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| Notes |
PMID:10413553 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
194 |
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| Author |
Parr, L.A.; de Waal, F.B. |
| Title |
Visual kin recognition in chimpanzees |
Type |
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| Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
399 |
Issue |
6737 |
Pages |
647-648 |
| Keywords |
Animals; *Behavior, Animal; Face; Female; Male; Pan troglodytes/*physiology |
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English |
Summary Language |
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Edition |
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| ISSN |
0028-0836 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:10385114 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
195 |
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| Author |
de Waal, F.B. |
| Title |
Cultural primatology comes of age |
Type |
Journal Article |
| Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
399 |
Issue |
6737 |
Pages |
635-636 |
| Keywords |
Animals; *Behavior, Animal; *Culture; Humans; Pan troglodytes/*physiology |
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Place of Publication |
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Editor |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0028-0836 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
PMID:10385107 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
196 |
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| Author |
Aureli, F.; Preston, S.D.; de Waal, F.B. |
| Title |
Heart rate responses to social interactions in free-moving rhesus macaques (Macaca mulatta): a pilot study |
Type |
Journal Article |
| Year |
1999 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
113 |
Issue |
1 |
Pages |
59-65 |
| Keywords |
Animals; Behavior, Animal/physiology; Female; Grooming/physiology; Heart Rate/*physiology; Macaca mulatta/*physiology; Male; Movement/*physiology; Pilot Projects; *Social Behavior |
| Abstract |
Heart rate telemetry was explored as a means to access animal emotion during social interactions under naturalistic conditions. Heart rates of 2 middle-ranking adult females living in a large group of rhesus macaques (Macaca mulatta) were recorded along with their behavior. Heart rate changes during 2 types of interactions were investigated, while controlling for the effects of posture and activity. The risk of aggression associated with the approach of a dominant individual was expected to provoke anxiety in the approachee. This prediction was supported by the heart rate increase after such an approach. No increase was found when the approacher was a kin or a subordinate individual. The tension-reduction function of allogrooming was also supported. Heart rate decelerated faster during the receipt of grooming than in matched control periods. |
| Address |
Yerkes Regional Primate Research Center, Emory University, Atlanta, Georgia 30322, USA. aureli@rmy.emory.edu |
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English |
Summary Language |
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Abbreviated Series Title |
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Edition |
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| ISSN |
0735-7036 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:10098269 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
197 |
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| Author |
de Waal, F.B. |
| Title |
Food transfers through mesh in brown capuchins |
Type |
Journal Article |
| Year |
1997 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
111 |
Issue |
4 |
Pages |
370-378 |
| Keywords |
Animals; Cebus/*psychology; *Feeding Behavior; Female; Food Preferences/psychology; Male; *Motivation; Sex Factors; *Social Behavior; Social Environment |
| Abstract |
Capuchin monkeys (Cebus apella) share food even if their partner is behind a mesh restraint. Pairs of adult capuchins were moved into a test chamber in which 1 monkey received cucumber pieces for 20 min and the other received apple slices during the following 20 min. Tolerant transfers of food occurred reciprocally among females: The rate of transfer from Female B to A in the second test phase varied with the rate from Female A to B in the first test phase. Several social mechanisms may explain this reciprocity. Whereas this study does not contradict cognitively complex explanations (e.g., mental record keeping of given and received food), the results are consistent with a rather simple explanation: that food sharing reflects a combination of affiliative tendency and high tolerance. The study suggests that sharing mechanisms may be different for adult male capuchins, with males sharing food more readily and less discriminatingly than females. |
| Address |
Yerkes Primate Center, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu |
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Place of Publication |
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English |
Summary Language |
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Edition |
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| ISSN |
0735-7036 |
ISBN |
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Conference |
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| Notes |
PMID:9419882 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
198 |
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| Author |
Judge, P.G.; De Waa,l F.B.M. |
| Title |
Rhesus monkey behaviour under diverse population densities: coping with long-term crowding |
Type |
Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
54 |
Issue |
3 |
Pages |
643-662 |
| Keywords |
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| Abstract |
A popular view is that high population density promotes behavioural pathology, particularly increased aggression. In contrast, according to a coping model, some primates have behavioural mechanisms (e.g. formal displays, reconciliation and grooming) that regulate social tensions and control the negative consequences of crowding. Seven captive rhesus monkey groups, Macaca mulattawere observed over a wide range of population densities where high-density groups were over 2000 times more crowded than low-density free-ranging groups. As density increased, male rhesus monkeys increased grooming and huddling but did not increase rates of aggression. Females increased all categories of behaviour examined (heavy aggression, mild aggression, formal bared-teeth displays, grooming and huddling), but the increases were not distributed uniformly to all classes of partners. Females increased only grooming, huddling and appeasement displays to males, increased only aggression and huddling with kin and increased all categories of behaviour to non-kin adult females. There were no differences in the percentage of aggressive conflicts reconciled across density conditions. Increased density had different effects on particular relationships. Relationships between females and males were characterized by a coping pattern in which animals modified their behaviour in ways that may decrease aggression under crowded conditions. Female relationships with kin and non-kin were characterized by increases in both aggression and friendly interactions as density increased. The different patterns of response to higher density may reflect different strategies depending on the strength and stability of relationships and the potential consequences if certain relationships are disrupted.1997The Association for the Study of Animal Behaviour |
| Address |
Yerkes Regional Primate Research Center and Department of Psychology, Emory University |
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English |
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Edition |
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0003-3472 |
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Conference |
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| Notes |
PMID:9299049 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
199 |
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