Records |
Author |
Friedrich, A.M.; Clement, T.S.; Zentall, T.R. |
Title |
Functional equivalence in pigeons involving a four-member class |
Type |
Journal Article |
Year |
2004 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
Volume |
67 |
Issue |
3 |
Pages |
395-403 |
Keywords |
Animals; *Association Learning; *Behavior, Animal; *Cognition; Columbidae; *Concept Formation |
Abstract |
Research suggests that animals are capable of forming functional equivalence relations or stimulus classes of the kind usually demonstrated by humans (e.g., the class defined by an object and the word for that object). In pigeons, such functional equivalences are typically established using many-to-one matching-to-sample in which two samples are associated with one comparison stimulus and two different samples are associated with the other. Evidence for the establishment of functional equivalences between samples associated with the same comparison comes from transfer tests. In Experiment 1, we found that pigeons can form a single class consisting of four members (many-to-one matching) when the alternative class has only one member (one-to-one matching). In Experiment 2, we ruled out the possibility that the pigeons acquired the hybrid one-to-one/many-to-one task by developing a single-code/default coding strategy as earlier research suggested that it might. Thus, pigeons can develop a functional class consisting of as many as four members, with the alternative class consisting of a single member. |
Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA |
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English |
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ISSN |
0376-6357 |
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Notes |
PMID:15518989 |
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no |
Call Number |
refbase @ user @ |
Serial |
228 |
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Author |
Clement, T.S.; Zentall, T.R. |
Title |
Choice based on exclusion in pigeons |
Type |
Journal Article |
Year |
2003 |
Publication |
Psychonomic bulletin & review |
Abbreviated Journal |
Psychon Bull Rev |
Volume |
10 |
Issue |
4 |
Pages |
959-964 |
Keywords |
Animals; Appetitive Behavior; *Association Learning; *Choice Behavior; *Color Perception; Columbidae; *Discrimination Learning; Memory, Short-Term; *Problem Solving; Psychomotor Performance; Reaction Time; Transfer (Psychology) |
Abstract |
When humans acquire a conditional discrimination and are given a novel-sample-comparison choice, they often reject a comparison known to be associated with a different sample and choose the alternative comparison by default (or by exclusion). In Experiment 1, we found that if, following matching training, we replaced both of the samples, acquisition took five times longer than if we replaced only one of the samples. Apparently, the opportunity to reject one of the comparisons facilitated the association of the other sample with the remaining comparison. In Experiment 2, we first trained pigeons to treat two samples differently (to associate Sample A with Comparison 1 and Sample B with Comparison 2) and then trained them to associate one of those samples with a new comparison (e.g., Sample A with Comparison 3) and to associate a novel sample (Sample C) with a different, new comparison (Comparison 4). When Sample B then replaced Sample C, the pigeons showed a significant tendency to choose Comparison 4 over Comparison 3. Thus, when given the opportunity, pigeons will choose by exclusion. |
Address |
University of Kentucky, Lexington, Kentucky, USA |
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English |
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ISSN |
1069-9384 |
ISBN |
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Conference |
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Notes |
PMID:15000545 |
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no |
Call Number |
refbase @ user @ |
Serial |
233 |
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Author |
Ottoni, E.B.; de Resende, B.D.; Izar, P. |
Title |
Watching the best nutcrackers: what capuchin monkeys (Cebus apella) know about others' tool-using skills |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
4 |
Pages |
215-219 |
Keywords |
Animals; *Association Learning; Cebus/*psychology; *Feeding Behavior; Female; Male; Nuts; *Problem Solving |
Abstract |
The present work is part of a decade-long study on the spontaneous use of stones for cracking hard-shelled nuts by a semi-free-ranging group of brown capuchin monkeys (Cebus apella). Nutcracking events are frequently watched by other individuals--usually younger, less proficient, and that are well tolerated to the point of some scrounging being allowed by the nutcracker. Here we report findings showing that the choice of observational targets is an active, non-random process, and that observers seem to have some understanding of the relative proficiency of their group mates, preferentially watching the more skilled nutcrackers, which enhances not only scrounging payoffs, but also social learning opportunities. |
Address |
Laboratory of Cognitive Ethology, Department of Experimental Psychology, Institute of Psychology, University of Sao Paulo, Brazil. ebottoni@usp.br |
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ISSN |
1435-9448 |
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Notes |
PMID:15719240 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
355 |
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Author |
Gibson, B.M.; Shettleworth, S.J. |
Title |
Place versus response learning revisited: tests of blocking on the radial maze |
Type |
Journal Article |
Year |
2005 |
Publication |
Behavioral neuroscience |
Abbreviated Journal |
Behav Neurosci |
Volume |
119 |
Issue |
2 |
Pages |
567-586 |
Keywords |
Animals; *Association Learning; Male; *Maze Learning; Memory; Rats; Rats, Long-Evans; Reproducibility of Results |
Abstract |
Neurobiological and behavioral research indicates that place learning and response learning occur simultaneously, in parallel. Such findings seem to conflict with theories of associative learning in which different cues compete for learning. The authors conducted place+response training on a radial maze and then tested place learning and response learning separately by reconfiguring the maze in various ways. Consistent with the effects of manipulating place and response systems in the brain (M. G. Packard & J. L. McGaugh, 1996), well-trained rats showed strong place learning and strong response learning. Three experiments using associative blocking paradigms indicated that prior response learning interferes with place learning. Blocking and related tests can be used to better understand how memory systems interact during learning. |
Address |
Department of Psychology, University of New Hampshire, Durham, NH 03824-3567, USA. bgibson@cisunix.unh.edu |
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English |
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ISSN |
0735-7044 |
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Notes |
PMID:15839803 |
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no |
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refbase @ user @ |
Serial |
362 |
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Author |
Gibson, B.M.; Shettleworth, S.J. |
Title |
Competition among spatial cues in a naturalistic food-carrying task |
Type |
Journal Article |
Year |
2003 |
Publication |
Learning & behavior : a Psychonomic Society publication |
Abbreviated Journal |
Learn Behav |
Volume |
31 |
Issue |
2 |
Pages |
143-159 |
Keywords |
Adaptation, Psychological; Animals; Appetitive Behavior; *Association Learning; *Attention; Choice Behavior; *Cues; *Discrimination Learning; Male; Rats; Rats, Long-Evans; Space Perception; *Spatial Behavior |
Abstract |
Rats collected nuts from a container in a large arena in four experiments testing how learning about a beacon or cue at a goal interacts with learning about other spatial cues (place learning). Place learning was quick, with little evidence of competition from the beacon (Experiments 1 and 2). Rats trained to approach a beacon regardless of its location were subsequently impaired when the well-learned beacon was removed and other spatial cues identified the location of the goal (Experiment 3). The competition between beacon and place cues reflected learned irrelevance for place cues (Experiment 4). The findings differ from those of some studies of associative interactions between cue and place learning in other paradigms. |
Address |
University of Toronto, Toronto, Ontario, Canada |
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English |
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ISSN |
1543-4494 |
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Notes |
PMID:12882373 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
368 |
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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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Series Volume |
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ISSN |
1435-9448 |
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:15069606 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
735 |
Permanent link to this record |