Quotation Traulsen, A., Hauert, Ch., De Silva, Hannelore, Sigmund, K., Nowak, M.A.. 2009. Exploration dynamics in evolutionary games. Proceedings of the National Academy of Sciences of the USA 106 709-712.




Evolutionary game theory describes systems where individual success is based on the interaction with others. We consider a system in which players unconditionally imitate more successful strategies but sometimes also explore the available strategies at random. Most research has focused on how strategies spread via genetic reproduction or cultural imitation, but random exploration of the available set of strategies has received less attention so far. In genetic settings, the latter corresponds to mutations in the DNA, whereas in cultural evolution, it describes individuals experimenting with new behaviors. Genetic mutations typically occur with very small probabilities, but random exploration of available strategies in behavioral experiments is common. We term this phenomenon “exploration dynamics” to contrast it with the traditional focus on imitation. As an illustrative example of the emerging evolutionary dynamics, we consider a public goods game with cooperators and defectors and add punishers and the option to abstain from the enterprise in further scenarios. For small mutation rates, cooperation (and punishment) is possible only if interactions are voluntary, whereas moderate mutation rates can lead to high levels of cooperation even in compulsory public goods games. This phenomenon is investigated through numerical simulations and analytical approximations.


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Publication's profile

Status of publication Published
Affiliation WU
Type of publication Journal article
Journal Proceedings of the National Academy of Sciences (PNAS)
Citation Index SCI
WU-Journal-Rating new MAR-A+, VW-A
Language English
Title Exploration dynamics in evolutionary games
Volume 106
Year 2009
Page from 709
Page to 712
Reviewed? Y
URL http://www.pnas.org/content/106/3/709.full.pdf+html


De Silva, Hannelore (Details)
Hauert, Ch. (UBC, Vancouver, Canada)
Nowak, M.A. (Harvard, United States/USA)
Sigmund, K. (Uni Wien, Austria)
Traulsen, A. (Max Planck Institute Plön, Germany)
Institute for Banking and Finance IN (Former organization)
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