Mengel, Friederike (2007) The evolution of function-valued traits for conditional cooperation. Journal of Theoretical Biology, 245 (3). pp. 564-575. DOI https://doi.org/10.1016/j.jtbi.2006.10.030
Mengel, Friederike (2007) The evolution of function-valued traits for conditional cooperation. Journal of Theoretical Biology, 245 (3). pp. 564-575. DOI https://doi.org/10.1016/j.jtbi.2006.10.030
Mengel, Friederike (2007) The evolution of function-valued traits for conditional cooperation. Journal of Theoretical Biology, 245 (3). pp. 564-575. DOI https://doi.org/10.1016/j.jtbi.2006.10.030
Abstract
In this paper we study the evolution of function-valued traits for cooperation in environments that display varying degrees of population viscosity. Traits measure an individual's intrinsic propensity to cooperate in a standard bilateral Prisoner's dilemma and can be increasing, decreasing or constant functions of the probability to interact with individuals of ones own genotype. We first analyse adaptation to homogenous environments (with constant degree of viscosity). Comparing environments characterized by different degrees of viscosity, we find that the relation between viscosity and the equilibrium type distribution is not monotone. In fact, it is possible that in fluid populations (no viscosity) there is more cooperation in equilibrium than in populations with intermediate degrees of viscosity. In a second step we analyse heterogenous environments (with varying degrees of viscosity). We find that under very weak assumptions on the distribution of the viscosity parameter strictly increasing functions are always selected and under some parameter constellations they are uniquely so. © 2006 Elsevier Ltd. All rights reserved.
Item Type: | Article |
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Uncontrolled Keywords: | cooperation; function-valued traits; population viscosity; evolution |
Subjects: | H Social Sciences > HB Economic Theory Q Science > Q Science (General) |
Divisions: | Faculty of Social Sciences Faculty of Social Sciences > Economics, Department of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 28 Jan 2015 14:26 |
Last Modified: | 30 Oct 2024 16:39 |
URI: | http://repository.essex.ac.uk/id/eprint/12377 |