We model externality abatement as an implementation problem. A social planner would like to ensure efficient behaviour among a group of agents whose actions are sources of externalities. However, the planner has limited information about the agents' preferences, and is unable to distinguish...

We consider an implementation problem faced by a planner who manages a roadway network. The problem entails both hidden information and hidden actions. We solve the planner's problem by introducing a new class of mechanisms and a new notion of implementation. The mechanisms, called price...

A community's culture is defined by the preferences and equilibrium behaviours of its members. Contacts among communities alter individual cultures through two interrelated mechanisms: behavioural adaptations driven by pay-offs to coordination, and preference changes shaped by socialization and...

We model externality abatement as an implementation problem. A social planner would like to ensure efficient behaviour among a group of agents whose actions are sources of externalities. However, the planner has limited information about the agents' preferences, and is unable to distinguish...

A community's culture is defined by the preferences and equilibrium behaviours of its members. Contacts among communities alter individual cultures through two interrelated mechanisms: behavioural adaptations driven by pay-offs to coordination, and preference changes shaped by socialization and...