Publication: The spatial ultimatum game revisited
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ISSN: 0022-5193 (print version)
ISSN: 1095-8541 (online version)
Publication date
2011-06-07
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Elsevier
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Abstract
We revisit the issue of the emergence of fair behavior in the framework of the spatial Ultimatum game, adding many important results and insights to the pioneering work by Page et al. [2000. The spatial Ultimatum game. Proc. R. Soc. London B 267, 2177], who showed in a specific example that on a two dimensional setup evolution may lead to strategies with some degree of fairness. With in this spatial
framework, we carry out a thorough simulation study and show that the emergence of altruism is a very generic phenomenon whose details depend on the dynamics considered. A very frequent feature is
the spontaneous emergence and fixation of quasiempathetic individuals,whose offers are very close to their acceptance thresholds. We present analytical arguments that allow an understanding of our results and give insights on the manner in which local effects in evolution may lead to such non
rational or apparently maladaptive behaviors.
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Keywords
Evolution, Fairness, Rationality, Game theory, Spatial dynamics
Bibliographic citation
Journal of Theoretical Biology, vol. 278, n. 1, 7 june 2011. Pp. 1-10