In a number of evolutionary models the presence of mutations, or random components of choice, serve to refine predictions of long-run behavior. We analyze the effects of mutation rates that vary because of the presence of imitation. A full characterization of long-run outcomes is provided for...

We compare the ability of two common compensation structures, efficiency wages (EW) and deferred compensation (DC), at inducing effort from workers. We test predictions on effort provision and elicit preferences between the two wage structures. The theoretical predictions on effort are generally...

Although the theory of optimal contracts and the principal agent model are now well established in the literature, empirical support for this theory has been mixed at best. We use economic experiments to test contract theory and assess the empirical relevance of two possible confounding factors...

We develop an explanation of the emergence of local norms, and theassociated phenomenon of geographical variation in behavior.Individuals are assumed to interact locally with neighbors in anenvironment with a network externality. Although many patterns ofbehavior are possible, the dispersed...

Burke, Fournier, and Prasad (2007) present evidence of star effects in the adoption and utilization of stents following their introduction in the mid-1990s. Here, we experiment with alternative constructions of star status and with additional control variables in the analysis and find further...