Beyond the prisoner's dilemma: Toward models to discriminate among mechanisms of cooperation in nature |
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| Authors: | Dugatkin L A Mesterton-Gibbonsand M Houston A I |
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| Affiliation: | Lee Alan Dugatkin is at the Dept of Biology, Mount Allison University, Sackville, New Brunswick, Canada EOA 3C0; T.H. Morgan School of Biological Sciences, University of Kentucky, Lexington, KY 40506-0225, USA. |
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| Abstract: | The iterated prisoner's dilemma game, or IPD, has now established itself as the orthodox paradigm for theoretical investigations of the evolution of cooperation; but its scope is restricted to reciprocity, which is only one of three categories of cooperation among unrelated individuals. Even within that category, a cooperative encounter has in general three phases, and the IPD has nothing to say about two of them. To distinguish among mechanisms of cooperation in nature, future theoretical work on the evolution of cooperation must distance itself from economics and develop games as a refinement of ethology's comparative approach. |
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