Records |
Author |
Biro, D.; Sumpter, D.J.T.; Meade, J.; Guilford, T. |
Title |
From Compromise to Leadership in Pigeon Homing |
Type |
Journal Article |
Year |
2006 |
Publication |
Current Biology |
Abbreviated Journal |
Curr Biol |
Volume |
16 |
Issue |
21 |
Pages |
2123-2128 |
Keywords |
Animal Migration; Animals; Columbidae/*physiology; Decision Making; *Flight, Animal; *Homing Behavior; Models, Biological; Orientation; *Social Behavior; *Social Dominance |
Abstract |
Summary A central problem faced by animals traveling in groups is how navigational decisions by group members are integrated, especially when members cannot assess which individuals are best informed or have conflicting information or interests , , , and . Pigeons are now known to recapitulate faithfully their individually distinct habitual routes home , and , and this provides a novel paradigm for investigating collective decisions during flight under varying levels of interindividual conflict. Using high-precision GPS tracking of pairs of pigeons, we found that if conflict between two birds' directional preferences was small, individuals averaged their routes, whereas if conflict rose over a critical threshold, either the pair split or one of the birds became the leader. Modeling such paired decision-making showed that both outcomes--compromise and leadership--could emerge from the same set of simple behavioral rules. Pairs also navigated more efficiently than did the individuals of which they were composed, even though leadership was not necessarily assumed by the more efficient bird. In the context of mass migration of birds and other animals, our results imply that simple self-organizing rules can produce behaviors that improve accuracy in decision-making and thus benefit individuals traveling in groups , and . |
Address |
Department of Zoology, University of Oxford, Oxford OX1 3PS, United Kingdom. daro.biro@zoo.ox.ac.uk |
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Language |
Englisch |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0960-9822 |
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Notes |
PMID:17084696 |
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no |
Call Number |
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Serial |
2026 |
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Author |
Devenport, J.A.; Patterson, M.R.; Devenport, L.D. |
Title |
Dynamic averaging and foraging decisions in horses (Equus callabus) |
Type |
Journal Article |
Year |
2005 |
Publication |
Journal of Comparative psychology |
Abbreviated Journal |
J. Comp. Psychol. |
Volume |
119 |
Issue |
3 |
Pages |
352-358 |
Keywords |
Animals; *Decision Making; *Feeding Behavior; Female; Horses/*psychology; Male; *Memory, Short-Term; Motivation; Orientation; *Social Environment |
Abstract |
The variability of most environments taxes foraging decisions by increasing the uncertainty of the information available. One solution to the problem is to use dynamic averaging, as do some granivores and carnivores. Arguably, the same strategy could be useful for grazing herbivores, even though their food renews and is more homogeneously distributed. Horses (Equus callabus) were given choices between variable patches after short or long delays. When patch information was current, horses returned to the patch that was recently best, whereas those without current information matched choices to the long-term average values of the patches. These results demonstrate that a grazing species uses dynamic averaging and indicate that, like granivores and carnivores, they can use temporal weighting to optimize foraging decisions. |
Address |
Department of Psychology, University of Central Oklahoma, 73034, USA. jdevenport@ucok.edu |
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English |
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ISSN |
0735-7036 |
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Notes |
PMID:16131264 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
752 |
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Author |
King, A.J.; Douglas, C.M.S.; Huchard, E.; Isaac, N.J.B.; Cowlishaw, G. |
Title |
Dominance and affiliation mediate despotism in a social primate |
Type |
Journal Article |
Year |
2008 |
Publication |
Current Biology : CB |
Abbreviated Journal |
Curr Biol |
Volume |
18 |
Issue |
23 |
Pages |
1833-1838 |
Keywords |
Animals; *Authoritarianism; Behavior, Animal/*physiology; Cooperative Behavior; *Decision Making; Feeding Behavior; Female; *Group Processes; Male; Papio ursinus/*psychology; *Social Dominance |
Abstract |
Group-living animals routinely have to reach a consensus decision and choose between mutually exclusive actions in order to coordinate their activities and benefit from sociality. Theoretical models predict “democratic” rather than “despotic” decisions to be widespread in social vertebrates, because they result in lower “consensus costs”-the costs of an individual foregoing its optimal action to comply with the decision-for the group as a whole. Yet, quantification of consensus costs is entirely lacking, and empirical observations provide strong support for the occurrence of both democratic and despotic decisions in nature. We conducted a foraging experiment on a wild social primate (chacma baboons, Papio ursinus) in order to gain new insights into despotic group decision making. The results show that group foraging decisions were consistently led by the individual who acquired the greatest benefits from those decisions, namely the dominant male. Subordinate group members followed the leader despite considerable consensus costs. Follower behavior was mediated by social ties to the leader, and where these ties were weaker, group fission was more likely to occur. Our findings highlight the importance of leader incentives and social relationships in group decision-making processes and the emergence of despotism. |
Address |
Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, UK. andrew.king@ioz.ac.uk |
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English |
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ISSN |
0960-9822 |
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Notes |
PMID:19026539 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
5124 |
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Author |
Nissani, M. |
Title |
Do Asian elephants (Elephas maximus) apply causal reasoning to tool-use tasks? |
Type |
Journal Article |
Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
32 |
Issue |
1 |
Pages |
91-96 |
Keywords |
Age Factors; Animals; Behavior, Animal; *Conditioning, Operant; *Decision Making; Discrimination (Psychology); Elephants; Female |
Abstract |
Two experiments addressed contradictory claims about causal reasoning in elephants. In Experiment 1, 4 Asian elephants (Elephas maximus) were pretrained to remove a lid from the top of a bucket and retrieve a food reward. Subsequently, in the first 5 critical trials, when the lid was placed alongside the bucket and no longer obstructed access to the reward, each elephant continued to remove the lid before retrieving the reward. Experiment 2, which involved 11 additional elephants and variations of the original design, yielded similarly counterintuitive observations. Although the results are open to alternative interpretations, they appear more consistent with associative learning than with causal reasoning. Future applications of Fabrean methodologies (J. H. Fabre, 1915) to animal cognition are proposed. |
Address |
Departmetn of Interdisciplinary Studies, Wayne State University, Detroit, MI 48202, USA. moti.nissani@wayne.edu |
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English |
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ISSN |
0097-7403 |
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Notes |
PMID:16435969 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2763 |
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Author |
Quesada, J; Kintsch, W.; Gomez, E. |
Title |
Complex problem-solving: a field in search of a definition? |
Type |
Journal Article |
Year |
2005 |
Publication |
Theoretical Issues in Ergonomics Science |
Abbreviated Journal |
Theor Issues Ergon Sci |
Volume |
6 |
Issue |
1 |
Pages |
5-33 |
Keywords |
Problem solving; Dynamic decision making; Micro-worlds; Expertise |
Abstract |
Complex problem-solving (CPS) is as an area of cognitive science that has received a good amount of attention, but theories in the field have not progressed accordingly. The reasons could be the lack of good definitions and classifications of the tasks (taxonomies). Although complexity is a term used pervasively in psychology and is operationalized in different ways, there are no psychological theories of complexity. The definition of problem-solving has been changed in the past to reflect the varied interests of the researchers and has lost its initial concreteness. These two facts together make it difficult to define CPS or make clear if CPS should reuse the theory and methods of classical problem-solving or on the contrary should build a theoretical structure starting from scratch. A taxonomy is offered of tasks using both formal features and psychological features that are theory-independent that could help compare the CPS tasks used in the literature. The adequateness is also reviewed of the most extended definitions of CPS and conclude that they are in serious need of review, since they cover tasks that are not considered problem-solving by their own authors or are not complex, but ignore others that should clearly be included. |
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Publisher |
Taylor and Francis Ltd |
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no |
Call Number |
refbase @ user @ |
Serial |
604 |
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Author |
Amé, J.-M.; Halloy, J.; Rivault, C.; Detrain, C.; Deneubourg, J.L. |
Title |
Collegial decision making based on social amplification leads to optimal group formation |
Type |
Journal Article |
Year |
2006 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
Volume |
103 |
Issue |
15 |
Pages |
5835-5840 |
Keywords |
Animals; Blattellidae/*physiology; Choice Behavior; Decision Making; Leadership; *Social Behavior |
Abstract |
Group-living animals are often faced with choosing between one or more alternative resource sites. A central question in such collective decision making includes determining which individuals induce the decision and when. This experimental and theoretical study of shelter selection by cockroach groups demonstrates that choices can emerge through nonlinear interaction dynamics between equal individuals without perfect knowledge or leadership. We identify a simple mechanism whereby a decision is taken on the move with limited information and signaling and without comparison of available opportunities. This mechanism leads to optimal mean benefit for group individuals. Our model points to a generic self-organized collective decision-making process independent of animal species. |
Address |
Service d'Ecologie Sociale CP231, Universite Libre de Bruxelles, Avenue F. D. Roosevelt 50, B-1050 Brussels, Belgium |
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English |
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Edition |
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ISSN |
0027-8424 |
ISBN |
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Medium |
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Conference |
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Notes |
PMID:16581903 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2042 |
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Author |
de Waal, F.B.M.; Davis, J.M. |
Title |
Capuchin cognitive ecology: cooperation based on projected returns |
Type |
Journal Article |
Year |
2003 |
Publication |
Neuropsychologia |
Abbreviated Journal |
Neuropsychologia |
Volume |
41 |
Issue |
2 |
Pages |
221-228 |
Keywords |
Animals; Attention; Cebus/*psychology; *Cooperative Behavior; Decision Making; Dominance-Subordination; Female; Male; *Motivation; Reaction Time; Reinforcement Schedule; *Social Behavior |
Abstract |
Stable cooperation requires that each party's pay-offs exceed those available through individual action. The present experimental study on brown capuchin monkeys (Cebus apella) investigated if decisions about cooperation are (a) guided by the amount of competition expected to follow the cooperation, and (b) made instantaneously or only after a period of familiarization. Pairs of adult monkeys were presented with a mutualistic cooperative task with variable opportunities for resource monopolization (clumped versus dispersed rewards), and partner relationships (kin versus nonkin). After pre-training, each pair of monkeys (N=11) was subjected to six tests, consisting of 15 2 min trials each, with rewards available to both parties. Clumped reward distribution had an immediate negative effect on cooperation: this effect was visible right from the start, and remained visible even if clumped trials alternated with dispersed trials. The drop in cooperation was far more dramatic for nonkin than kin, which was explained by the tendency of dominant nonkin to claim more than half of the rewards under the clumped condition. The immediacy of responses suggests a decision-making process based on predicted outcome of cooperation. Decisions about cooperation thus take into account both the opportunity for and the likelihood of subsequent competition over the spoils. |
Address |
Living Links, Yerkes Primate Center, Emory University, 954 N. Gatewood Road, Atlanta, GA 30322, USA. dewaal@emory.edu |
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English |
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ISSN |
0028-3932 |
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Notes |
PMID:12459220 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
182 |
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Author |
Watanabe, S.; Huber, L. |
Title |
Animal logics: decisions in the absence of human language |
Type |
Journal Article |
Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
9 |
Issue |
4 |
Pages |
235-245 |
Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Brain/physiology; Cognition/*physiology; Decision Making/*physiology; Evolution; Humans; *Language; *Logic; Problem Solving/physiology |
Abstract |
Without Abstract |
Address |
Department of Psychology, Keio University, Mita 2-15-45, Minato-ku, Tokyo 108, Japan. swat@flet.keio.ac.jp |
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ISSN |
1435-9448 |
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Notes |
PMID:16909231 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2453 |
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Author |
Gould, J.L. |
Title |
Animal cognition |
Type |
Journal Article |
Year |
2004 |
Publication |
Current Biology : CB |
Abbreviated Journal |
Curr Biol |
Volume |
14 |
Issue |
10 |
Pages |
R372-5 |
Keywords |
Animals; Awareness; Behavior, Animal/*physiology; Cognition/*physiology; Concept Formation; Decision Making; Instinct; Intelligence/*physiology; Learning/*physiology; Species Specificity |
Abstract |
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Address |
Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey 08544, USA. gould@princeton.edu |
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ISSN |
0960-9822 |
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Notes |
PMID:15186759 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
4169 |
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Author |
Hoy, R. |
Title |
Animal awareness: The (un)binding of multisensory cues in decision making by animals |
Type |
Journal Article |
Year |
2005 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
Volume |
102 |
Issue |
7 |
Pages |
2267-2268 |
Keywords |
Animals; Anura/physiology; *Awareness; *Behavior, Animal; Decision Making; Female; Male; Perception; Sensation |
Abstract |
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Address |
Department of Neurobiology and Behavior, 215 Mudd Hall, Cornell University, Ithaca, NY 14850, USA. rrh3@cornell.edu |
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0027-8424 |
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Notes |
PMID:15703288 |
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no |
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Equine Behaviour @ team @ |
Serial |
2821 |
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