| Evolution of cooperative strategies from first principles. | |
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MedLine Citation:
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PMID: 16625195 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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One of the greatest challenges in the modern biological and social sciences is to understand the evolution of cooperative behaviour. General outlines of the answer to this puzzle are currently emerging as a result of developments in the theories of kin selection, reciprocity, multilevel selection and cultural group selection. The main conceptual tool used in probing the logical coherence of proposed explanations has been game theory, including both analytical models and agent-based simulations. The game-theoretic approach yields clear-cut results but assumes, as a rule, a simple structure of payoffs and a small set of possible strategies. Here we propose a more stringent test of the theory by developing a computer model with a considerably extended spectrum of possible strategies. In our model, agents are endowed with a limited set of receptors, a set of elementary actions and a neural net in between. Behavioural strategies are not predetermined; instead, the process of evolution constructs and reconstructs them from elementary actions. Two new strategies of cooperative attack and defence emerge in simulations, as well as the well-known dove, hawk and bourgeois strategies. Our results indicate that cooperative strategies can evolve even under such minimalist assumptions, provided that agents are capable of perceiving heritable external markers of other agents. |
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Authors:
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Mikhail Burtsev; Peter Turchin |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Nature Volume: 440 ISSN: 1476-4687 ISO Abbreviation: Nature Publication Date: 2006 Apr |
Date Detail:
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Created Date: 2006-04-20 Completed Date: 2006-05-10 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0410462 Medline TA: Nature Country: England |
Other Details:
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Languages: eng Pagination: 1041-4 Citation Subset: IM |
Affiliation:
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Department of Non-linear Dynamics, Keldysh Institute of Applied Mathematics of RAS, Moscow 125047, Russia. mbur@narod.ru |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Birds / physiology* Computer Simulation Cooperative Behavior* Evolution* Models, Biological Population Density Time Factors |
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