Artificial Life II
Artificial life as a tool for biological inquiry
Artificial Life
The effects of viscosity in choice and refusal IPD environments
Artificial Intelligence Review
Stable cooperation in changing environments
Proceedings of the 7th international joint conference on Autonomous agents and multiagent systems - Volume 3
Slime mould and the transition to multicellularity: the role of the macrocyst stage
ECAL'05 Proceedings of the 8th European conference on Advances in Artificial Life
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Viscous populations (those whose members are spatially distributed and have limited mobility and locality of interaction and mating) have been proposed to support the evolution of reciprocal cooperation among self-interested individuals. Here we present a model of such a population and describe how its examination yielded the realization that different classes of viscous populations exist with differing levels of support for reciprocal cooperation. Specifically we find from our model that, in a spatially distributed population with increased viscosity, the reciprocally cooperative tit-for-tat strategy may not be globally stable due to a corresponding increase in local population density.