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Friendship Selection

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Author Info
Javier Rivas

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Abstract

We model the formation of friendships as repeated cooperation within a set of heterogeneous players. The model builds around three of the most important facts about friendship: friends help each other, there is reciprocity in the relationship and people usually have few friends. In our results we explain how similarity between people affects the friendship selection. We also characterize when the friendship network won’t depend on the random process by which people meet each other. Finally, we explore how players’ patience influences the length of their friendship relations. Our results match and explain empirical evidence reported in social studies on friendship. For instance, our model explains why troublesome subjects have few friends.

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File URL: http://cadmus.iue.it/dspace/bitstream/1814/6857/1/ECO-2007-08.pdf
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Publisher Info
Paper provided by European University Institute in its series Economics Working Papers with number ECO2007/08.

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Date of creation: 2007
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Handle: RePEc:eui:euiwps:eco2007/08

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Related research
Keywords: Friendship cooperative game grim trigger strategy social networks

Find related papers by JEL classification:
C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
Z13 - Other Special Topics - - Cultural Economics - - - Social Norms and Social Capital; Social Networks Economic Anthropology

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This page was last updated on 2008-7-1.

This information is provided to you by IDEAS at the Department of Economics, College of Liberal Arts and Sciences, University of Connecticut using RePEc data on a server sponsored by the Society for Economic Dynamics.