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Let the Right One In: A Microeconomic Approach to Partner Choice in Mutualisms
(University of Chicago Press, 2011)
One of the main problems impeding the evolution of cooperation is partner choice. When information is asymmetric (the quality of a potential partner is known only to himself), it may seem that partner choice is not possible ...
Emergence of Cooperation and Evolutionary Stability in Finite Populations
(Nature Publishing Group, 2004)
To explain the evolution of cooperation by natural selection has been a major goal of biologists since Darwin. Cooperators help others at a cost to themselves, while defectors receive the benefits of altruism without ...
Tit-for-Tat or Win-Stay, Lose-Shift?
(Elsevier, 2007)
The repeated Prisoner's Dilemma is usually known as a story of tit-for-tat (TFT). This remarkable strategy has won both of Robert Axelrod's tournaments. TFT does whatever the opponent has done in the previous round. It ...
Are Mutualisms Maintained by Host Sanctions or Partner Fidelity Feedback?
(National Academy of Sciences, 2010)
Although mutualisms are common in all ecological communities and have played key roles in the diversification of life, our current understanding of the evolution of cooperation applies mostly to social behavior within a ...
Positive Interactions Promote Public Cooperation
(American Association for the Advancement of Science, 2009)
The public goods game is the classic laboratory paradigm for studying collective action problems. Each participant chooses how much to contribute to a common pool that returns benefits to all participants equally. The ideal ...