Michael Callen is assistant professor of public policy at the Harvard Kennedy School of Government. His recent work uses experiments to identify ways to address accountability and service delivery failures in the public sector. He has published in the American Economic Review, the Journal of Conflict Resolution, and the British Journal of Political Science. He is an Affiliate of Evidence for Policy Design (EPoD), the Bureau for Research and Economic Analysis of Development (BREAD), the Jameel-Poverty Action Lab (J-PAL), the Center for Effective Global Action (CEGA), the Center for Economic Research Pakistan (CERP), Empirical Studies of Conflict (ESOC), and a Principal Investigator on the Building Capacity for the Use of Research Evidence (BCURE): Data and evidence for smart policy design project. His primary interests are political economy, development economics, and experimental economics.