Friendship selection

Research output: Contribution to journalArticlepeer-review

8 Citations (SciVal)


We model the formation of friendships as repeated cooperation within a set of heterogeneous players. The model is built around three of the most important facts about friendship: friends help each other, there is reciprocity in the relationship and people usually have only a few friends. In our results, we explain how similarity between people affects the friendship selection. We also characterize the long-run friendship network and illustrate how friendships emerge given the random process by which people meet each other.
Original languageEnglish
Pages (from-to)521-538
Number of pages18
JournalInternational Journal of Game Theory
Issue number4
Publication statusPublished - Nov 2009


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