Records |
Author |
Hopkins, W.D.; Washburn, D.A. |
Title |
Matching visual stimuli on the basis of global and local features by chimpanzees (Pan troglodytes) and rhesus monkeys (Macaca mulatta) |
Type |
Journal Article |
Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
5 |
Issue |
1 |
Pages |
27-31 |
Keywords |
Animals; Discrimination Learning; Facial Expression; Female; Macaca mulatta/physiology/*psychology; Male; Pan troglodytes/physiology/*psychology; Perceptual Masking; Social Perception; Visual Perception/*physiology |
Abstract |
This study was designed to examine whether chimpanzees and monkeys exhibit a global-to-local precedence in the processing of hierarchically organized compound stimuli, as has been reported for humans. Subjects were tested using a sequential matching-to-sample paradigm using stimuli that differed on the basis of their global configuration or local elements, or on both perceptual attributes. Although both species were able to discriminate stimuli on the basis of their global configuration or local elements, the chimpanzees exhibited a global-to-local processing strategy, whereas the rhesus monkeys exhibited a local-to-global processing strategy. The results suggest that perceptual and attentional mechanisms underlying information-processing strategies may account for differences in learning by primates. |
Address |
Department of Psychology, Berry College, Mount Berry, GA 30149, USA. whopkins@berry.edu |
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1435-9448 |
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Notes |
PMID:11957399 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2613 |
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Author |
Brannon, E.M.; Terrace, H.S. |
Title |
Representation of the numerosities 1-9 by rhesus macaques (Macaca mulatta) |
Type |
Journal Article |
Year |
2000 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
26 |
Issue |
1 |
Pages |
31-49 |
Keywords |
Animals; *Cognition; Macaca mulatta/*psychology; *Mathematics; Perception; Reaction Time |
Abstract |
Three rhesus monkeys (Macaca mulatta) were trained to respond to exemplars of 1, 2, 3, and 4 in an ascending, descending, or a nonmonotonic numerical order (1-->2-->3-->4, 4-->3-->2--1, 3-->1-->4-->2). The monkeys were then tested on their ability to order pairs of the novel numerosities 5-9. In Experiment 1, all 3 monkeys ordered novel exemplars of the numerosities 1-4 in ascending or descending order. The attempt to train a nonmonotonic order (3-->1-->4-->2) failed. In Experiment 2A, the 2 monkeys who learned the ascending numerical rule ordered pairs of the novel numerosities 5-9 on unreinforced trials. The monkey who learned the descending numerical rule failed to extrapolate the descending rule to new numerosities. In Experiment 2B all 3 monkeys ordered novel exemplars of pairs of the numerosities 5-9. Accuracy and latency of responding revealed distance and magnitude effects analogous to previous findings with human participants (R. S. Moyer & T. K. Landaeur, 1967). Collectively these studies show that monkeys represent the numerosities 1-9 on at least an ordinal scale. |
Address |
Department of Psychology, Columbia University, New York, New York 10027, USA. liz@psych.columbia.edu |
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ISSN |
0097-7403 |
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Notes |
PMID:10650542 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2775 |
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Author |
Brannon, E.M.; Terrace, H.S. |
Title |
Ordering of the numerosities 1 to 9 by monkeys |
Type |
Journal Article |
Year |
1998 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
Volume |
282 |
Issue |
5389 |
Pages |
746-749 |
Keywords |
Animals; *Discrimination (Psychology); Macaca mulatta/*psychology; *Mathematics; *Mental Processes |
Abstract |
A fundamental question in cognitive science is whether animals can represent numerosity (a property of a stimulus that is defined by the number of discriminable elements it contains) and use numerical representations computationally. Here, it was shown that rhesus monkeys represent the numerosity of visual stimuli and detect their ordinal disparity. Two monkeys were first trained to respond to exemplars of the numerosities 1 to 4 in an ascending numerical order (1 --> 2 --> 3 --> 4). As a control for non-numerical cues, exemplars were varied with respect to size, shape, and color. The monkeys were later tested, without reward, on their ability to order stimulus pairs composed of the novel numerosities 5 to 9. Both monkeys responded in an ascending order to the novel numerosities. These results show that rhesus monkeys represent the numerosities 1 to 9 on an ordinal scale. |
Address |
Department of Psychology, Columbia University, New York, NY 10027, USA. liz@psych.columbia.edu |
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0036-8075 |
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Notes |
PMID:9784133 |
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no |
Call Number |
refbase @ user @ |
Serial |
606 |
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Author |
de Waal, F.B. |
Title |
Macaque social culture: development and perpetuation of affiliative networks |
Type |
Journal Article |
Year |
1996 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
Volume |
110 |
Issue |
2 |
Pages |
147-154 |
Keywords |
Animals; Dominance-Subordination; Female; Macaca mulatta/*psychology; Male; Maternal Behavior; *Peer Group; Sexual Behavior, Animal; *Social Behavior; Social Distance; *Social Environment |
Abstract |
Maternal affiliative relations may be transmitted to offspring, similar to the way in which maternal rank determines offspring rank. The development of 23 captive female rhesus monkeys (Macaca mulatta) was followed from the day of birth until adulthood. A multivariate analysis compared relations among age peers with affiliative relations, kinship, and rank distance among mothers. Maternal relations were an excellent predictor of affiliative relations among daughters, explaining up to 64% of the variance. Much of this predictability was due to the effect of kinship. However, after this variable had been controlled, significant predictability persisted. For relations of female subjects with male peers, on the other hand, maternal relations had no significant predictive value beyond the effect of kinship. One possible explanation of these results is that young rhesus females copy maternal social preferences through a process of cultural learning. |
Address |
Department of Psychology, Emory University, Atlanta, Georgia 30322, USA. dewaal@rmy.emory.edu |
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ISSN |
0735-7036 |
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PMID:8681528 |
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no |
Call Number |
refbase @ user @ |
Serial |
204 |
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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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0735-7036 |
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Notes |
PMID:10739311 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
191 |
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Author |
Washburn, D.A.; Smith, J.D.; Shields, W.E. |
Title |
Rhesus monkeys (Macaca mulatta) immediately generalize the uncertain response |
Type |
Journal Article |
Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
32 |
Issue |
2 |
Pages |
185-189 |
Keywords |
Adaptation, Psychological; Animals; *Cognition; *Discrimination Learning; *Generalization (Psychology); Macaca mulatta/*psychology; Male; *Uncertainty |
Abstract |
Rhesus monkeys (Macaca mulatta) have learned, like humans, to use an uncertain response adaptively under test conditions that create uncertainty, suggesting a metacognitive process by which human and nonhuman primates may monitor their confidence and alter their behavior accordingly. In this study, 4 rhesus monkeys generalized their use of the uncertain response, without additional training, to 2 familiar tasks (2-choice discrimination learning and mirror-image matching to sample) that predictably and demonstrably produce uncertainty. The monkeys were significantly less likely to use the uncertain response on trials in which the answer might be known. These results indicate that monkeys, like humans, know when they do not know and that they can learn to use a symbol as a generalized means for indicating their uncertainty. |
Address |
Department of Psychology, Georgia State University, Atlanta, 30303, USA. dwashhburn@gsu.edu |
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0097-7403 |
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Notes |
PMID:16634662 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2760 |
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Author |
Washburn, D.A.; Astur, R.S. |
Title |
Exploration of virtual mazes by rhesus monkeys (Macaca mulatta) |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
3 |
Pages |
161-168 |
Keywords |
Animals; Choice Behavior/*physiology; Computer Peripherals; Macaca mulatta/*physiology; Male; Maze Learning/*physiology; Space Perception/*physiology; User-Computer Interface |
Abstract |
A chasm divides the huge corpus of maze studies found in the literature, with animals tested in mazes on the one side and humans tested with mazes on the other. Advances in technology and software have made possible the production and use of virtual mazes, which allow humans to navigate computerized environments and thus for humans and nonhuman animals to be tested in comparable spatial domains. In the present experiment, this comparability is extended even further by examining whether rhesus monkeys (Macaca mulatta) can learn to explore virtual mazes. Four male macaques were trained to manipulate a joystick so as to move through a virtual environment and to locate a computer-generated target. The animals succeeded in learning this task, and located the target even when it was located in novel alleys. The search pattern within the maze for these animals resembled the pattern of maze navigation observed for monkeys that were tested on more traditional two-dimensional computerized mazes. |
Address |
Department of Psychology, Georgia State University, Atlanta, GA 30303, USA. dwashburn@gsu.edu |
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1435-9448 |
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Notes |
PMID:12750961 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2569 |
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Author |
Cooper, M.A.; Berntein, I.S.; Hemelrijk, C.K. |
Title |
Reconciliation and relationship quality in Assamese macaques (Macaca assamensis) |
Type |
Journal Article |
Year |
2005 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
65 |
Issue |
3 |
Pages |
269-282 |
Keywords |
Aggression; Animals; Female; Macaca/*psychology; Male; Sex Factors; *Social Behavior |
Abstract |
A consistent conclusion in reconciliation research is that animals that reconcile are likely to have strong social bonds. This has led to the hypothesis that reconciliation occurs most often between valuable social partners. We tested this hypothesis in a group of Assamese macaques (Macaca assamensis) living near a temple in Assam, India. Using focal sample and ad libitum data collection, we recorded the occurrence of reconciliation, grooming, and agonistic aiding, and the outcomes of approach. We used matrix association methods (TauKr correlation) to correlate reconciliation with grooming, aiding, and approach outcome. Females reconciled more often with females with which they had stronger grooming and aiding relationships. The correlation between reconciliation and aiding was significant for support to the aggressor and the victim. In contrast, no such correlations with reconciliation were found for males. This study provides evidence that females reconcile most often with valuable and compatible social partners. The results do not support the relationship-quality hypothesis for males, and we suggest that future studies give more consideration to the possibility that males reconcile for reasons other than to repair relationships with valuable partners. |
Address |
Department of Psychology, Georgia State University, Atlanta, Georgia 30302-3966, USA. biomcc@langate.gsu.edu |
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ISSN |
0275-2565 |
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Notes |
PMID:15772987 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
2875 |
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Author |
Murai, C.; Tomonaga, M.; Kamegai, K.; Terazawa, N.; Yamaguchi, M.K. |
Title |
Do infant Japanese macaques ( Macaca fuscata) categorize objects without specific training? |
Type |
Journal Article |
Year |
2004 |
Publication |
Primates |
Abbreviated Journal |
Primates |
Volume |
45 |
Issue |
1 |
Pages |
1-6 |
Keywords |
Analysis of Variance; Animals; *Cognition; *Concept Formation; *Generalization, Stimulus; Japan; Macaca/*psychology; Male |
Abstract |
In the present study, we examined whether infant Japanese macaques categorize objects without any training, using a similar technique also used with human infants (the paired-preference method). During the familiarization phase, subjects were presented twice with two pairs of different objects from one global-level category. During the test phase, they were presented twice with a pair consisting of a novel familiar-category object and a novel global-level category object. The subjects were tested with three global-level categories (animal, furniture, and vehicle). It was found that they showed significant novelty preferences as a whole, indicating that they processed similarities between familiarization objects and novel familiar-category objects. These results suggest that subjects responded distinctively to objects without training, indicating the possibility that infant macaques possess the capacity for categorization. |
Address |
Department of Psychology, Graduate School of Letters, Kyoto University, Sakyo, Kyoto 606-8501, Japan. cmurai@bun.kyoto-u.ac.jp |
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0032-8332 |
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PMID:14505179 |
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no |
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Equine Behaviour @ team @ |
Serial |
2813 |
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Author |
Santos, L.R.; Miller, C.T.; Hauser, M.D. |
Title |
Representing tools: how two non-human primate species distinguish between the functionally relevant and irrelevant features of a tool |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
4 |
Pages |
269-281 |
Keywords |
Animals; *Discrimination Learning; Female; Form Perception/*physiology; Habituation, Psychophysiologic/*physiology; Imitative Behavior; Macaca mulatta/*growth & development/*psychology; Male; Motor Skills; Practice (Psychology); Saguinus/*growth & development/*psychology; Species Specificity |
Abstract |
Few studies have examined whether non-human tool-users understand the properties that are relevant for a tool's function. We tested cotton-top tamarins (Saguinus oedipus) and rhesus macaques (Macaca mulatta) on an expectancy violation procedure designed to assess whether these species make distinctions between the functionally relevant and irrelevant features of a tool. Subjects watched an experimenter use a tool to push a grape down a ramp, and then were presented with different displays in which the features of the original tool (shape, color, orientation) were selectively varied. Results indicated that both species looked longer when a newly shaped stick acted on the grape than when a newly colored stick performed the same action, suggesting that both species perceive shape as a more salient transformation than color. In contrast, tamarins, but not rhesus, attended to changes in the tool's orientation. We propose that some non-human primates begin with a predisposition to attend to a tool's shape and, with sufficient experience, develop a more sophisticated understanding of the features that are functionally relevant to tools. |
Address |
Department of Psychology, Harvard University, Cambridge, MA 02138, USA. laurie.santos@yale.edu |
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1435-9448 |
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PMID:12736800 |
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Equine Behaviour @ team @ |
Serial |
2570 |
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