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Author |
Santos, L.R.; Rosati, A.; Sproul, C.; Spaulding, B.; Hauser, M.D. |
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Title  |
Means-means-end tool choice in cotton-top tamarins (Saguinus oedipus): finding the limits on primates' knowledge of tools |
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Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
4 |
Pages |
236-246 |
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Keywords |
Animals; *Behavior, Animal; *Choice Behavior; Female; Male; *Problem Solving; Saguinus/*psychology |
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Abstract |
Most studies of animal tool use require subjects to use one object to gain access to a food reward. In many real world situations, however, animals perform more than one action in sequence to achieve their goals. Of theoretical interest is whether animals have the cognitive capacity to recognize the relationship between consecutive action sequences in which there may be one overall goal and several subgoals. Here we ask if cotton-top tamarins, a species that in captivity uses tools to solve means-end problems, can go one step further and use a sequence of tools (means) to obtain food (end). We first trained subjects to use a pulling tool to obtain a food reward. After this initial training, subjects were presented with problems in which one tool had to be used in combination with a second in order to obtain food. Subjects showed great difficulty when two tools were required to obtain the food reward. Although subjects attended to the connection between the tool and food reward, they ignored the physical connection between the two tools. After training on a two-tool problem, we presented subjects with a series of transfer tests to explore if they would generalize to new types of connections between the tools. Subjects readily transferred to new connections. Our results therefore provide the first evidence to date that tamarins can learn to solve problems involving two tools, but that they do so only with sufficient training. |
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Department of Psychology, Yale University, New Haven, CT, USA. laurie.santos@yale.edu |
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1435-9448 |
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PMID:15668762 |
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Equine Behaviour @ team @ |
Serial |
2495 |
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Author |
Craig, J.V. |
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Title |
Measuring social behavior: social dominance |
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Journal Article |
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Year |
1986 |
Publication |
Journal of animal science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
62 |
Issue |
4 |
Pages |
1120-1129 |
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Keywords |
Aggression; Agonistic Behavior; Animals; *Behavior, Animal; Cattle; Chickens; Competitive Behavior; Female; Horses; Male; *Social Dominance; Swine |
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Abstract |
Social dominance develops more slowly when young animals are kept in intact peer groups where they need not compete for resources. Learned generalizations may cause smaller and weaker animals to accept subordinate status readily when confronted with strangers that would be formidable opponents. Sexual hormones and sensitivity to them can influence the onset of aggression and status attained. After dominance orders are established, they tend to be stable in female groups but are less so in male groups. Psychological influences can affect dominance relationships when strangers meet and social alliances within groups may affect relative status of individuals. Whether status associated with agonistic behavior is correlated with control of space and scarce resources needs to be determined for each species and each kind of resource. When such correlations exists, competitive tests and agonistic behavior associated with gaining access to scarce resources can be useful to the observer in learning about dominance relationships rapidly. Examples are given to illustrate how estimates of social dominance can be readily attained and some strengths and weaknesses of the various methods. |
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0021-8812 |
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PMID:3519554 |
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Call Number |
refbase @ user @ |
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676 |
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Author |
Zentall, T.R. |
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Title |
Mental time travel in animals: a challenging question |
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Journal Article |
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Year |
2006 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
72 |
Issue |
2 |
Pages |
173-183 |
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Keywords |
Animals; *Behavior, Animal; Columbidae; Concept Formation; Conditioning, Operant; *Imagination; *Memory; Mental Recall; Planning Techniques; Rats; *Time Perception; Transfer (Psychology) |
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Abstract |
Humans have the ability to mentally recreate past events (using episodic memory) and imagine future events (by planning). The best evidence for such mental time travel is personal and thus subjective. For this reason, it is particularly difficult to study such behavior in animals. There is some indirect evidence, however, that animals have both episodic memory and the ability to plan for the future. When unexpectedly asked to do so, animals can report about their recent past experiences (episodic memory) and they also appear to be able to use the anticipation of a future event as the basis for a present action (planning). Thus, the ability to imagine past and future events may not be uniquely human. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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0376-6357 |
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PMID:16466863 |
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no |
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Call Number |
refbase @ user @ |
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218 |
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Author |
Marchal, P.; Anderson, J.R. |
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Title |
Mirror-image responses in capuchin monkeys (Cebus capucinus): social responses and use of reflected environmental information |
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Journal Article |
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Year |
1993 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
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Volume |
61 |
Issue |
3 |
Pages |
165-173 |
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Keywords |
Animals; *Behavior, Animal; Cebus/*psychology; *Cognition; Female; Male; Self Concept; Sex Factors; *Social Behavior |
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Laboratoire de Psychophysiologie (CNRS URA 1295), Universite Louis-Pasteur, Strasbourg, France |
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0015-5713 |
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PMID:8206423 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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4180 |
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Author |
Friedberger, J.C. |
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Title |
Modern horse training methods--what is justifiable? |
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Journal Article |
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Year |
1970 |
Publication |
The Veterinary Record |
Abbreviated Journal |
Vet. Rec. |
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Volume |
87 |
Issue |
8 |
Pages |
229-231 |
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Keywords |
Animals; *Behavior, Animal; Ethics; *Horses; Learning |
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0042-4900 |
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PMID:5529870 |
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Call Number |
refbase @ user @ |
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1967 |
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Author |
de Waal, F.B.; Johanowicz, D.L. |
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Title |
Modification of reconciliation behavior through social experience: an experiment with two macaque species |
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Journal Article |
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Year |
1993 |
Publication |
Child development |
Abbreviated Journal |
Child Dev |
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Volume |
64 |
Issue |
3 |
Pages |
897-908 |
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Keywords |
Aggression; Animals; *Behavior, Animal; Female; Grooming; *Macaca; *Macaca mulatta; Male; Play and Playthings; *Socialization; Vocalization, Animal |
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Abstract |
Reconciliation, defined as a friendly reunion between former opponents shortly after an aggressive encounter, is common in the stumptail macaque (Macaca arctoides) but rare in the rhesus macaque (M. mulatta). Juveniles of the two species were cohoused for 5 months, after which they were observed with conspecifics only. Control rhesus monkeys, matched in age and sex to the experimental subjects, went through the same procedure without exposure to the other species. A threefold increase in the proportion of reconciled fights was measured in the rhesus subjects. The difference emerged gradually during cohousing with the tutor species and was sustained following removal of this species. Other behavior, such as grooming and aggression, decreased over time. It is suggested that the social attitude of the subjects was affected through contact with a species characterized by a more relaxed dominance style. |
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Wisconsin Regional Primate Research Center, University of Wisconsin-Madison |
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ISSN |
0009-3920 |
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Notes |
PMID:8339702 |
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no |
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Call Number |
refbase @ user @ |
Serial |
209 |
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Author |
Zhao, C.J.; Qin, Y.H.; Lee, X.H.; Wu, C. |
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Title |
Molecular and cytogenetic paternity testing of a male offspring of a hinny |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Animal Breeding and Genetics = Zeitschrift fur Tierzuchtung und Zuchtungsbiologie |
Abbreviated Journal |
J Anim Breed Genet |
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Volume |
123 |
Issue |
6 |
Pages |
403-405 |
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Keywords |
Animals; Cytogenetic Analysis; DNA, Mitochondrial/genetics; Equidae/*genetics; Female; Horses/genetics; Hybridization, Genetic; Male; Microsatellite Repeats; Pedigree; Protamines/genetics; Sexual Behavior, Animal |
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An alleged male foal of a female mule, whose sire and grandparents were unknown, was identified for its pedigree. Parentage testing was conducted by comparing polymorphism of 12 microsatellite DNA sites and mitochondrial D-loop sequences of the male foal and the female mule. Both the sequence analysis of species-specific DNA fragments and a cytogenetic analysis were performed to identify the species of the foal and its parents. The results showed that the alleged female mule is actually a hinny, and the male foal, which possesses 62 chromosomes, qualifies as an offspring of the female hinny and a jack donkey. |
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Equine Center, China Agricultural University, Beijing, China |
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ISSN |
0931-2668 |
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Notes |
PMID:17177697 |
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no |
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Call Number |
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Serial |
1846 |
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Author |
Seyfarth, R.M.; Cheney, D.L.; Marler, P. |
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Title |
Monkey responses to three different alarm calls: evidence of predator classification and semantic communication |
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Journal Article |
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Year |
1980 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
210 |
Issue |
4471 |
Pages |
801-803 |
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Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Cercopithecidae/*physiology; *Fear; Female; Male; Predatory Behavior; Vocalization, Animal |
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Abstract |
Vervet monkeys give different alarm calls to different predators. Recordings of the alarms played back when predators were absent caused the monkeys to run into trees for leopard alarms, look up for eagle alarms, and look down for snake alarms. Adults call primarily to leopards, martial eagles, and pythons, but infants give leopard alarms to various mammals, eagle alarms to many birds, and snake alarms to various snakelike objects. Predator classification improves with age and experience. |
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0036-8075 |
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Notes |
PMID:7433999 |
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no |
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Call Number |
refbase @ user @ |
Serial |
351 |
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Author |
Shettleworth, S.J.; Sutton, J.E. |
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Title |
Multiple systems for spatial learning: dead reckoning and beacon homing in rats |
Type |
Journal Article |
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Year |
2005 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
31 |
Issue |
2 |
Pages |
125-141 |
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Keywords |
Animals; Behavior, Animal; Cues; *Feeding Behavior; Habituation, Psychophysiologic; *Homing Behavior; *Learning; Male; Rats; Rats, Long-Evans; *Space Perception |
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Abstract |
Rats homed with food in a large lighted arena. Without visual cues, they used dead reckoning. When a beacon indicated the home, rats could also use the beacon. Homing did not differ in 2 groups of rats, 1 provided with the beacon and 1 without it; tests without the beacon gave no evidence that beacon learning overshadowed dead reckoning (Experiment 1). When the beacon was at the home for 1 group and in random locations for another, there was again no evidence of cue competition (Experiment 2). Dead reckoning experience did not block acquisition of beacon homing (Experiment 3). Beacon learning and dead reckoning do not compete for predictive value but acquire information in parallel and are used hierarchically. |
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Department of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada. shettle@psych.utoronto.ca |
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0097-7403 |
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Notes |
PMID:15839771 |
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no |
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Call Number |
refbase @ user @ |
Serial |
364 |
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Author |
Barton, R.A. |
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Title |
Neocortex size and behavioural ecology in primates |
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Journal Article |
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Year |
1996 |
Publication |
Proceedings of the Royal Society B |
Abbreviated Journal |
Proc. R. Soc. Lond. B |
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Volume |
263 |
Issue |
1367 |
Pages |
173-177 |
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Keywords |
Animals; *Behavior, Animal; Brain/*anatomy & histology; Cerebral Cortex/*anatomy & histology/*physiology; *Ecology; Evolution; Primates/anatomy & histology/*physiology/psychology; Regression Analysis; Species Specificity |
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Abstract |
The neocortex is widely held to have been the focus of mammalian brain evolution, but what selection pressures explain the observed diversity in its size and structure? Among primates, comparative studies suggest that neocortical evolution is related to the cognitive demands of sociality, and here I confirm that neocortex size and social group size are positively correlated once phylogenetic associations and overall brain size are taken into account. This association holds within haplorhine but not strepsirhine primates. In addition, the neocortex is larger in diurnal than in nocturnal primates, and among diurnal haplorhines its size is positively correlated with the degree of frugivory. These ecological correlates reflect the diverse sensory-cognitive functions of the neocortex. |
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Department of Anthropology, University of Durham |
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0962-8452 |
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PMID:8728982 |
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Equine Behaviour @ team @ |
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4783 |
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