Diffusion in Social Networks.

We consider processes in which norms of behavior are transmetted through social of geographic networks.Agents adopt behaviors based on a combination of their inherent payoff and their local popularity (the number of neighbors who have adopted them) subject to some random error. Extending work of Blume (1993,1995), Ellison (1993), and Morris (1997), we characterize the long-run dynamics of such processes in terms of the geometry of the network, but without placing a priori restriction on the network structure.