| Records |
| Author |
Caldwell, C.A.; Whiten, A. |
| Title |
Testing for social learning and imitation in common marmosets, Callithrix jacchus, using an artificial fruit |
Type |
Journal Article |
| Year |
2004 |
Publication |
Animal cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
7 |
Issue  |
2 |
Pages |
77-85 |
| Keywords |
Animals; *Association Learning; Callithrix/*psychology; Discrimination Learning; *Feeding Behavior; Female; Food Preferences; Fruit; *Imitative Behavior; Male; *Social Behavior; Social Environment |
| Abstract |
We tested for social learning and imitation in common marmosets using an artificial foraging task and trained conspecific demonstrators. We trained a demonstrator marmoset to open an artificial fruit, providing a full demonstration of the task to be learned. Another marmoset provided a partial demonstration, controlling for stimulus enhancement effects, by eating food from the outside of the apparatus. We thus compared three observer groups, each consisting of four animals: those that received the full demonstration, those that received the partial demonstration, and a control group that saw no demonstration prior to testing. Although none of the observer marmosets succeeded in opening the artificial fruit during the test periods, there were clear effects of demonstration type. Those that saw the full demonstration manipulated the apparatus more overall, whereas those from the control group manipulated it the least of the three groups. Those from the full-demonstration group also contacted the particular parts of the artificial fruit that they had seen touched (localised stimulus enhancement) to a greater extent than the other two groups. There was also an interaction between the number of hand and mouth touches made to the artificial fruit for the full- and partial-demonstration groups. Whether or not these data represent evidence for imitation is discussed. We also propose that the clear differences between the groups suggest that social learning mechanisms provide real benefits to these animals in terms of developing novel food-processing skills analogous to the one presented here. |
| Address |
Centre for Social Learning and Cognitive Evolution and Scottish Primate Research Group, University of St Andrews, KY16 9JU, St Andrews, Fife, Scotland. C.A.Caldwell@exeter.ac.uk |
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English |
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1435-9448 |
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| Notes |
PMID:15069606 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
735 |
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| Author |
Chiandetti, C.; Regolin, L.; Sovrano, V.A.; Vallortigara, G. |
| Title |
Spatial reorientation: the effects of space size on the encoding of landmark and geometry information |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
159-168 |
| Keywords |
Animals; Chickens/*physiology; *Feeding Behavior; Male; Orientation/*physiology; Pattern Recognition, Visual/*physiology; *Space Perception |
| Abstract |
The effects of the size of the environment on animals' spatial reorientation was investigated. Domestic chicks were trained to find food in a corner of either a small or a large rectangular enclosure. A distinctive panel was located at each of the four corners of the enclosures. After removal of the panels, chicks tested in the small enclosure showed better retention of geometrical information than chicks tested in the large enclosure. In contrast, after changing the enclosure from a rectangular-shaped to a square-shaped one, chicks tested in the large enclosure showed better retention of landmark (panels) information than chicks tested in the small enclosure. No differences in the encoding of the overall arrangement of landmarks were apparent when chicks were tested for generalisation in an enclosure differing from that of training in size together with a transformation (affine transformation) that altered the geometric relations between the target and the shape of the environment. These findings suggest that primacy of geometric or landmark information in reorientation tasks depends on the size of the experimental space, likely reflecting a preferential use of the most reliable source of information available during visual exploration of the environment. |
| Address |
Department of Psychology and B.R.A.I.N. Centre for Neuroscience, University of Trieste, Via S. Anastasio 12, 34123, Trieste, Italy. cchiandetti@univ.trieste.it |
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1435-9448 |
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| Notes |
PMID:17136416 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2433 |
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| Author |
Naug, D.; Arathi, H.S. |
| Title |
Sampling and decision rules used by honey bees in a foraging arena |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
117-124 |
| Keywords |
Animals; Bees/*physiology; *Choice Behavior; Cooperative Behavior; *Feeding Behavior; Flight, Animal |
| Abstract |
Animals must continuously choose among various available options to exploit the most profitable resource. They also need to keep themselves updated about the values of all available options, since their relative values can change quickly due to depletion or exploitation by competitors. While the sampling and decision rules by which foragers profitably exploit a flower patch have attracted a great deal of attention in theory and experiments with bumble bees, similar rules for honey bee foragers, which face similar foraging challenges, are not as well studied. By presenting foragers of the honey bee Apis cerana with choice tests in a foraging arena and recording their behavior, we investigate possible sampling and decision rules that the foragers use to choose one option over another and to track other options. We show that a large part of the sampling and decision-making process of a foraging honey bee can be explained by decomposing the choice behavior into dichotomous decision points and incorporating the cost of sampling. The results suggest that a honey bee forager, by using a few simple rules as part of a Bayesian inference process, is able to effectively deal with the complex task of successfully exploiting foraging patches that consist of dynamic and multiple options. |
| Address |
Department of Biology, Colorado State University, Fort Collins, CO 80523, USA. dhruba@lamar.colostate.edu |
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English |
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1435-9448 |
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| Notes |
PMID:16941157 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2441 |
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| Author |
Chappell, J.; Kacelnik, A. |
| Title |
Selection of tool diameter by New Caledonian crows Corvus moneduloides |
Type |
Journal Article |
| Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
7 |
Issue |
2 |
Pages |
121-127 |
| Keywords |
Animals; Behavior, Animal; *Choice Behavior; Discrimination Learning; *Feeding Behavior; Female; Functional Laterality; *Manufactured Materials; *Plant Leaves; *Problem Solving; *Songbirds; Technology |
| Abstract |
One important element of complex and flexible tool use, particularly where tool manufacture is involved, is the ability to select or manufacture appropriate tools anticipating the needs of any given task-an ability that has been rarely tested in non-primates. We examine aspects of this ability in New Caledonian crows-a species known to be extraordinary tool users and manufacturers. In a 2002 study, Chappell and Kacelnik showed that these crows were able to select a tool of the appropriate length for a task among a set of different lengths, and in 2002, Weir, Chappell and Kacelnik showed that New Caledonian crows were able to shape unfamiliar materials to create a usable tool for a specific task. Here we examine their handling of tool diameter. In experiment 1, we show that when facing three loose sticks that were usable as tools, they preferred the thinnest one. When the three sticks were presented so that one was loose and the other two in a bundle, they only disassembled the bundle when their preferred tool was tied. In experiment 2, we show that they manufacture, and modify during use, a tool of a suitable diameter from a tree branch, according to the diameter of the hole through which the tool will have to be inserted. These results add to the developing picture of New Caledonian crows as sophisticated tool users and manufacturers, having an advanced level of folk physics. |
| Address |
Department of Zoology, South Parks Road, OX1 3PS, Oxford, UK. jackie.chappell@zoo.ox.ac.uk |
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1435-9448 |
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| Notes |
PMID:15069612 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2528 |
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| Author |
Hunt, G.R.; Gray, R.D. |
| Title |
Direct observations of pandanus-tool manufacture and use by a New Caledonian crow (Corvus moneduloides) |
Type |
Journal Article |
| Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
7 |
Issue |
2 |
Pages |
114-120 |
| Keywords |
Animals; *Behavior, Animal; *Discrimination Learning; *Feeding Behavior; *Functional Laterality; Manufactured Materials; *Plant Leaves; *Songbirds |
| Abstract |
New Caledonian crows are reported to have impressive pandanus-tool manufacture abilities. These claims are based on an extensive artefact record. However, inferring behavioural and cognitive abilities without direct observation of tool manufacture is problematic. Here we report (and document on video) direct observations of a crow making and using stepped pandanus tools at Pic Ningua. We observed (1) a bias for making tools on left edges consistent with that previously found at the site, (2) faithful manufacture of a stepped design with high overall congruence in the shapes of tools, (3) the use of convergent rips to first form the tapered end working away from the trunk then the wide end working towards the trunk, (4) appropriate functional use of stepped tools by use of the leaf-edge barbs to hook food from holes, and (5) consistent holding of tools on the left side of its head when using them. Our observations verify most of the claims based on the artefact record, but the crow's exact manufacture technique was slightly different to that inferred previously. |
| Address |
Department of Psychology, University of Auckland, 92019 Auckland, New Zealand. grhunt10@hotmail.com |
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1435-9448 |
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| Notes |
PMID:15069611 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2529 |
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| Author |
Cohen, J.; Pardy, S.; Solway, H.; Graham, H. |
| Title |
Chunking versus foraging search patterns by rats in the hierarchically baited radial maze |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
6 |
Issue |
2 |
Pages |
93-104 |
| Keywords |
Animals; Exploratory Behavior; *Feeding Behavior; Male; *Maze Learning; Rats; Rats, Long-Evans |
| Abstract |
Rats were exposed to a radial maze containing six black smooth arms and six wire-grid-covered arms and a striped 'exit arm' in experiment 1. The probability of a black or grid arm being baited (5/6 vs 1/6) with sunflower seeds was associated with its proximal cue for some rats (the Relevant Arm Cue group) but not for others (the Irrelevant Arm Cue group). All rats could terminate a trial and receive a highly preferred morsel of apple by entering the exit arm only after having sampled all six seed-baited arms. Relevant Arm Cue rats usually chose some arms from the more densely baited set before choosing an arm from the less densely baited set and made fewer reentries than Irrelevant Arm Cue rats. Although such clustered, higher choice accuracy in the Relevant Arm Cue group corresponds to human clustered, better recall of verbal items from lists hierarchically organized by categories, these rats did not similarly exhaustively retrieve items (arm locations). That is, when required to terminate a trial by entering the 'exit' arm for an apple morsel after having sampled all seed-baited arms, both groups were equally unable to withhold making nonrewarded premature exits. This nonexhaustive foraging search pattern was maintained in the next two experiments in which the radial maze was reduced to three black and three grid arms along with the striped 'exit' arm and in which black and grid arm cues were paired with number of seeds (eight or one) in an arm for Relevant Arm Cue rats. Although Relevant Arm Cue rats displayed perfect clustering by entering all eight-seeded arms before a one-seeded arm, they made more premature exits and reentries into eight-seeded arms in experiment 2 or when forced to enter all eight-seeded arms in experiment 3 than did Irrelevant Arm Cue rats. These foraging tendencies prevent accurate estimations of the amount of information (i.e., arm locations) rats can 'chunk'. |
| Address |
Department of Psychology, University of Windsor, Windsor, Ontario N9B 3P4, Canada. jcohen@uwindsor.ca |
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1435-9448 |
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| Notes |
PMID:12720109 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2574 |
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| Author |
Jensen, G.D.; Gordon, B.N.; Wolfheim, J. |
| Title |
Nursing behavior in infant monkeys: a sequence analysis |
Type |
Journal Article |
| Year |
1975 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
55 |
Issue |
1-2 |
Pages |
115-127 |
| Keywords |
Animals; Dependency (Psychology); *Feeding Behavior; Female; *Macaca; Male; Sensory Deprivation; Social Behavior; Spatial Behavior |
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0005-7959 |
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| Notes |
PMID:1191212 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
4153 |
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| Author |
Nicol, C.J. |
| Title |
Development, direction, and damage limitation: social learning in domestic fowl |
Type |
Journal Article |
| Year |
2004 |
Publication |
Learning & behavior : a Psychonomic Society publication |
Abbreviated Journal |
Learn Behav |
| Volume |
32 |
Issue |
1 |
Pages |
72-81 |
| Keywords |
Adaptation, Psychological; Age Factors; Animals; Behavior, Animal; *Chickens; *Feeding Behavior; *Food Preferences; *Imitative Behavior; Imprinting (Psychology); *Learning; Maternal Behavior; Reinforcement (Psychology); *Social Environment; *Social Facilitation |
| Abstract |
This review highlights two areas of particular interest in the study of social learning in fowl. First, the role of social learning in the development of feeding and foraging behavior in young chicks and older birds is described. The role of the hen as a demonstrator and possible teacher is considered, and the subsequent social influence of brood mates and other companions on food avoidance and food preference learning is discussed. Second, the way in which work on domestic fowl has contributed to an understanding of the importance of directed social learning is examined. The well-characterized hierarchical social organization of small chicken flocks has been used to design studies which demonstrate that the probability of social transmission is strongly influenced by social relationships between birds. The practical implications of understanding the role of social learning in the spread of injurious behaviors in this economically important species are briefly considered. |
| Address |
Department of Clinical Veterinary Science, University of Bristol, Langford, Bristol, England. c.j.nicol@bristol.ac.uk |
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English |
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1543-4494 |
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| Notes |
PMID:15161142 |
Approved |
no |
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refbase @ user @ |
Serial |
75 |
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| Author |
Brauer, J.; Kaminski, J.; Riedel, J.; Call, J.; Tomasello, M. |
| Title |
Making inferences about the location of hidden food: social dog, causal ape |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of comparative psychology |
Abbreviated Journal |
J Comp Psychol |
| Volume |
120 |
Issue |
1 |
Pages |
38-47 |
| Keywords |
Animals; Communication; Cues; Dogs; Exploratory Behavior; *Feeding Behavior; Female; *Food; Male; Pan paniscus; Pan troglodytes; *Visual Perception |
| Abstract |
Domestic dogs (Canis familiaris) and great apes from the genus Pan were tested on a series of object choice tasks. In each task, the location of hidden food was indicated for subjects by some kind of communicative, behavioral, or physical cue. On the basis of differences in the ecologies of these 2 genera, as well as on previous research, the authors hypothesized that dogs should be especially skillful in using human communicative cues such as the pointing gesture, whereas apes should be especially skillful in using physical, causal cues such as food in a cup making noise when it is shaken. The overall pattern of performance by the 2 genera strongly supported this social-dog, causal-ape hypothesis. This result is discussed in terms of apes' adaptations for complex, extractive foraging and dogs' adaptations, during the domestication process, for cooperative communication with humans. |
| Address |
Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. jbraeuer@eva.mpg.de |
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Place of Publication |
Washington, D.C. : 1983 |
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English |
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0735-7036 |
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| Notes |
PMID:16551163 |
Approved |
yes |
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refbase @ user @ |
Serial |
597 |
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| Author |
Fragaszy, D.; Visalberghi, E. |
| Title |
Socially biased learning in monkeys |
Type |
Journal Article |
| Year |
2004 |
Publication |
Learning & behavior : a Psychonomic Society publication |
Abbreviated Journal |
Learn Behav |
| Volume |
32 |
Issue |
1 |
Pages |
24-35 |
| Keywords |
Adaptation, Psychological; Animal Communication; Animals; Behavior, Animal; *Feeding Behavior/psychology; Food Preferences/psychology; Haplorhini/*psychology; *Imitative Behavior; Imprinting (Psychology); *Learning; *Social Environment; *Social Facilitation |
| Abstract |
We review socially biased learning about food and problem solving in monkeys, relying especially on studies with tufted capuchin monkeys (Cebus apella) and callitrichid monkeys. Capuchin monkeys most effectively learn to solve a new problem when they can act jointly with an experienced partner in a socially tolerant setting and when the problem can be solved by direct action on an object or substrate, but they do not learn by imitation. Capuchin monkeys are motivated to eat foods, whether familiar or novel, when they are with others that are eating, regardless of what the others are eating. Thus, social bias in learning about foods is indirect and mediated by facilitation of feeding. In most respects, social biases in learning are similar in capuchins and callitrichids, except that callitrichids provide more specific behavioral cues to others about the availability and palatability of foods. Callitrichids generally are more tolerant toward group members and coordinate their activity in space and time more closely than capuchins do. These characteristics support stronger social biases in learning in callitrichids than in capuchins in some situations. On the other hand, callitrichids' more limited range of manipulative behaviors, greater neophobia, and greater sensitivity to the risk of predation restricts what these monkeys learn in comparison with capuchins. We suggest that socially biased learning is always the collective outcome of interacting physical, social, and individual factors, and that differences across populations and species in social bias in learning reflect variations in all these dimensions. Progress in understanding socially biased learning in nonhuman species will be aided by the development of appropriately detailed models of the richly interconnected processes affecting learning. |
| Address |
Psychology Department, University of Georgia, Athens, Georgia 30602, USA. doree@uga.edu |
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English |
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1543-4494 |
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| Notes |
PMID:15161138 |
Approved |
no |
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refbase @ user @ |
Serial |
828 |
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