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	Author	Dugatkin, L.A.; Mesterton-Gibbons, M.
	Title	Cooperation among unrelated individuals: reciprocal altruism, by-product mutualism and group selection in fishes			Type	Journal Article
	Year	1996	Publication	Biosystems	Abbreviated Journal	Biosystems
	Volume	37	Issue	1-2	Pages	19-30
	Keywords	By-product mutualism; Cooperative behavior; Fish; Reciprocal altruism; Trait-group selection
	Abstract	Cooperation among unrelated individuals can evolve not only via reciprocal altruism but also via trait-group selection or by-product mutualism (or some combination of all three categories). Therefore the (iterated) prisoner's dilemma is an insufficient paradigm for studying the evolution of cooperation. We replace this game by the cooperator's dilemma, which is more versatile because it enables all three categories of cooperative behavior to be examined within the framework of a single theory. Controlled studies of cooperation among fish provide examples of each category of cooperation. Specifically, we describe reciprocal altruism among simultaneous hermaphrodites that swap egg parcels, group-selected cooperation among fish that inspect dangerous predators and by-product mutualism in the cooperative foraging of coral-reef fish.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	refbase @ user @			Serial	481
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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
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0960-9822	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:19026539			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5124
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	Author	Schwab, C.; Huber, L.
	Title	*Obey or not obey? Dogs (Canis familiaris) behave differently in response to attentional states of their owners*			Type	Journal Article
	Year	2006	Publication	Journal of Comparative Psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	120	Issue	3	Pages	169-175
	Keywords	Animals; Attention; Awareness; Bonding, Human-Pet; Cooperative Behavior; Cues; Dogs/psychology; Humans; Motivation; Nonverbal Communication; Social Perception; Speech Perception; *Verbal Behavior
	Abstract	Sixteen domestic dogs (Canis familiaris) were tested in a familiar context in a series of 1-min trials on how well they obeyed after being told by their owner to lie down. Food was used in 1/3 of all trials, and during the trial the owner engaged in 1 of 5 activities. The dogs behaved differently depending on the owner's attention to them. When being watched by the owner, the dogs stayed lying down most often and/or for the longest time compared with when the owner read a book, watched TV, turned his or her back on them, or left the room. These results indicate that the dogs sensed the attentional state of their owners by judging observable behavioral cues such as eye contact and eye, head, and body orientation.
	Address	Department for Behavior, Neurobiology and Cognition, University of Vienna, Vienna, Austria. cpriberskyschwab@yahoo.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16893253			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4961
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	Author	Byrne, R.W.; Bates, L.A.
	Title	Why are animals cognitive?			Type	Journal Article
	Year	2006	Publication	Current Biology : CB	Abbreviated Journal	Curr Biol
	Volume	16	Issue	12	Pages	R445-8
	Keywords	Animals; Arachnida/physiology; Association Learning; Behavior, Animal; *Cognition; Cooperative Behavior; Falconiformes/physiology; Pan troglodytes/physiology; Parrots/physiology; Passeriformes/physiology
	Abstract
	Address	Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, Fife KY16 9JP, Scotland
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0960-9822	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16781995			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4708
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	Author	Packer, C; Heinsohn, R.
	Title	Response:Lioness leadership			Type	Journal Article
	Year	1996	Publication	Science (New York, N.Y.)	Abbreviated Journal	Science
	Volume	271	Issue	5253	Pages	1215-1216
	Keywords	Animals; Behavior; Animal; Cooperative Behavior; Female; Lions/psychology; Territoriality
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0036-8075	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @ Jahn1996			Serial	2072
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	Author	Johnson, D.D.P.; Stopka, P.; Knights, S.
	Title	Sociology: The puzzle of human cooperation			Type	Journal Article
	Year	2003	Publication	Nature	Abbreviated Journal	Nature
	Volume	421	Issue	6926	Pages	911-2; discussion 912
	Keywords	Altruism; Cooperative Behavior; Evolution; Humans; Models, Biological; Punishment; Reward; Risk
	Abstract
	Address	Olin Institute for Strategic Studies, Harvard University, Cambridge, Massachusetts 02138, USA. dominic@post.harvard.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0028-0836	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:12606989			Approved	no
	Call Number	refbase @ user @			Serial	467
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	Author	Suzuki, Y.; Toquenaga, Y.
	Title	Effects of information and group structure on evolution of altruism: analysis of two-score model by covariance and contextual analyses			Type	Journal Article
	Year	2005	Publication	Journal of theoretical biology	Abbreviated Journal	J. Theor. Biol.
	Volume	232	Issue	2	Pages	191-201
	Keywords	Altruism; Analysis of Variance; Communication; Cooperative Behavior; Evolution; Game Theory; Group Structure; Humans; Models, Genetic; Models, Psychological; Selection (Genetics); Trust
	Abstract	An altruistic individual has to gamble on cooperation to a stranger because it does not know whether the stranger is trustworthy before direct interaction. Nowak and Sigmund (Nature 393 (1998a) 573; J. Theor. Biol. 194 (1998b) 561) presented a new theoretical framework of indirect reciprocal altruism by image scoring game where all individuals are informed about a partner's behavior from its image score without direct interaction. Interestingly, in a simplified version of the image scoring game, the evolutionarily stability condition for altruism became a similar form of Hamilton's rule, i.e. inequality that the probability of getting correct information is more than the ratio of cost to benefit. Since the Hamilton's rule was derived by evolutionarily stable analysis, the evolutionary meaning of the probability of getting correct information has not been clearly examined in terms of kin and group selection. In this study, we applied covariance analysis to the two-score model for deriving the Hamilton's rule. We confirmed that the probability of getting correct information was proportional to the bias of altruistic interactions caused by using information about a partner's image score. The Hamilton's rule was dependent on the number of game bouts even though the information reduced the risk of cooperation to selfish one at the first encounter. In addition, we incorporated group structure to the two-score model to examine whether the probability of getting correct information affect selection for altruism by group selection. We calculated a Hamilton's rule of group selection by contextual analysis. Group selection is very effective when either the probability of getting correct information or that of future interaction, or both are low. The two Hamilton's rules derived by covariance and contextual analyses demonstrated the effects of information and group structure on the evolution of altruism. We inferred that information about a partner's behavior and group structure can produce flexible pathways for the evolution of altruism.
	Address	Integrative Environmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Ten-Nou-Dai, Tsukuba, Ibaraki 305-8572, Japan. yukari@pe.ies.life.tsukuba.ac.jp
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0022-5193	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15530489			Approved	no
	Call Number	refbase @ user @			Serial	556
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	Author	Brosnan, S.F.; Freeman, C.; De Waal, F.B.M.
	Title	Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys			Type	Journal Article
	Year	2006	Publication	American journal of primatology	Abbreviated Journal	Am. J. Primatol.
	Volume	68	Issue	7	Pages	713-724
	Keywords	Animals; Behavior, Animal/physiology; Cebus/physiology; Cooperative Behavior; Female; Food Preferences/physiology; Male; Reward
	Abstract	It was recently demonstrated that capuchin monkeys notice and respond to distributional inequity, a trait that has been proposed to support the evolution of cooperation in the human species. However, it is unknown how capuchins react to inequitable rewards in an unrestricted cooperative paradigm in which they may freely choose both whether to participate and, within the bounds of their partner's behavior, which reward they will receive for their participation. We tested capuchin monkeys with such a design, using a cooperative barpull, which has been used with great success in the past. Contrary to our expectations, the equity of the reward distribution did not affect success or pulling behavior. However, the behavior of the partner in an unequal situation did affect overall success rates: pairs that had a tendency to alternate which individual received the higher-value food in unequal reward situations were more than twice as successful in obtaining rewards than pairs in which one individual dominated the higher-value food. This ability to equitably distribute rewards in inherently biased cooperative situations has profound implications for activities such as group hunts, in which multiple individuals work together for a single, monopolizable reward.
	Address	Living Links Center, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA. sbrosna@emory.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0275-2565	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16786518			Approved	no
	Call Number	refbase @ user @			Serial	160
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	Author	Gary C. Jahn; Craig Packer,Robert Heinsohn
	Title	Lioness leadership			Type	Journal Article
	Year	1996	Publication	Science (New York, N.Y.)	Abbreviated Journal	Science
	Volume	271	Issue	5253	Pages	1216-1219
	Keywords	Animals; Behavior; Animal; Cooperative Behavior; Female; Lions/psychology; Territoriality
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0036-8075	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @ Jahn1996			Serial	2073
Permanent link to this record



	Author	Cohen, J.
	Title	Animal behavior. The world through a chimp's eyes			Type
	Year	2007	Publication	Science (New York, N.Y.)	Abbreviated Journal	Science
	Volume	316	Issue	5821	Pages	44-45
	Keywords	Animal Communication; Animals; Behavior, Animal; Cognition; Cooperative Behavior; Culture; Memory; Pan troglodytes/psychology; Social Behavior; Tool Use Behavior
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1095-9203	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:17412932			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2832
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