Studies of cooperation in infinitely repeated matching games focus on homogeneous economies, where full cooperation is efficient and any defection is collectively sanctioned. Here we study heterogeneous economies where occasional defections are part of efficient play, and show how to support those outcomes through contagious punishments.
Camera, G., & Gioffré, A. (2016). Asymmetric social norms. ESI Working Paper 16-30. Retrieved from http://digitalcommons.chapman.edu/esi_working_papers/208/