Does mobility decrease cooperation?

Details Does mobility decrease cooperation? Does mobility decrease cooperation?

2006-08-04

arxiv.org/abs/q-bio/0608009v2

Journal of Theoretical Biology, 2007, Vol 244/4 pp 722-728

Biology

Quantitative Biology

Populations and Evolution

8 pages, 6 figures, Extended discussion of results and clarification of some points, new refs. added, version to appear in J.

Scientific paper

10.1016/j.jtbi.2006.09.012

We explore the minimal conditions for sustainable cooperation on a spatially distributed population of memoryless, unconditional strategies (cooperators and defectors) in presence of unbiased, non contingent mobility in the context of the Prisoner's Dilemma game. We find that cooperative behavior is not only possible but may even be enhanced by such an ``always-move'' rule, when compared with the strongly viscous (``never-move'') case. In addition, mobility also increases the capability of cooperation to emerge and invade a population of defectors, what may have a fundamental role in the problem of the onset of cooperation.

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