This paper incorporates wealth inequality into a public goods dilemma, including an asymmetric distribution of wealth representative of existing inequalities among nations. Without homophily (imitation of like agents), inequality actually makes cooperation easier to achieve; homophily, however, can undercut this, leading to collapse because poor agents may contribute less. Understanding such effects may enhance the ability to achieve agreements on climate change and other issues."
Recommended citation: Vítor V. Vasconcelos, Francisco C. Santos, Jorge M. Pacheco, and Simon A. Levin. “Climate policies under wealth inequality” PNAS (2014) 111 (6) 2212-2216