School of Economics

2004 Discussion Papers

School of Economics Discussion Paper 04/14
October 2004

Contagion and the Emergence of Convention in Small Worlds
Edward Cartwright

School of Economics
University of Kent at Canterbury


We model a simple dynamic process in which boundedly rational agents learn through their interactions with others. Of interest is to study the process of contagion where by one action 'spreads throughout the population' and becomes conventional. We vary the network of player interaction between a regular lattice and a random network allowing us to model contagion in small world networks. Through simulation results we highlight the importance of network structure on both the possibility of contagion and the rate of contagion.

JEL Classification: C70, C72, C62

Keywords: Best reply, risk dominant, contagion, small world

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