Macartan is Professor of Political Science at Columbia University and Director of the Institutions and Inequality research unit at WZB Berlin. Ongoing research focuses on post-conflict development, ethnic politics, and democratic development with a current focus on the use of field experiments to study democratic decision-making in post-conflict and developing areas. His methodological interests focus on causal inference, transparency in social science, and Bayesian nets. He has conducted research in Chad, Ghana, Haiti, Indonesia, Liberia, Mali, Sao Tome and Principe, Sierra Leone, Senegal, Uganda, and elsewhere. Recent work has appeared in the American Political Science Review, Political Analysis, and the Economic Journal. His books include Coethnicity (with James Habyarimana, Daniel Posner, and Jeremy Weinstein), Escaping the Resource Curse (with Jeffrey Sachs and Joseph Stiglitz) and Political Games.