My four most current working papers, listed below, are all under active revision right now. Several of them may undergo a change of title as well. Check back soon for updates. If you really want the latest version of one of them right now, you may request it by email.

1. Robust collusion with private information (Published 9/28/2011)
2. A theory of disagreement in repeated games with bargaining (with Joel Watson, Updated 10/13/2011)
3. Optimally empty promises and endogenous supervision (with Kareen Rozen, Updated 9/30/2011)
4. Enforcing cooperation in networked societies (with Nageeb Ali)