We introduce social interactions into the Schelling model of residential choice; these interactions take the form of a Prisoner's Dilemma game. We first study a Schelling model and a spatial Prisoner's Dilemma model separately to provide benchmarks for studying a combined model, with preferences...

We study the public goods problem associated with vaccinations. The externality created by an infection is composed of two parts, the probability of infection and the marginal infections generated if infected. We argue that the key component in a successful vaccination strategy is the second of...

We develop an agent-based computational model for the spatial spread of an epi- demic to explore how the inter-regional variability in vaccine coverage a§ects the global epidemic size as well as the individual risk of infection. Our agent-based model imple- ments a standard SIR model of...

We examine the effects of social network structure on inequality in a model of referral hiring that focuses on groups rather than individuals. More random social networks yield higher employment rates than less random ones if the population is integrated or job vacancy information flows are...