Dr. Ruggeri is the new director of the School’s GRAPH—Global Research Analytics for Population Health—program. He is also a lecturer in analytics for decision-making in Health Policy and Management. Kai joined Columbia from the Department of Psychology at the University of Cambridge, where he directs the Policy Research Group that he founded in 2013. He studies how policy influences population behavior, and how integrating evidence into policies can improve economic outcomes and population well-being. His teaching is primarily in analytics and decision-making as well as behavioral and managerial economics.