W. Bentley MacLeod is Professor, Economics and International and Public Affairs, Princeton University and Sami Mnaymneh Professor Emeritus of Economics and Professor Emeritus of International and Public Affairs at Columbia University. Vice-President 2020-2021 (President 2021-2022), American Law and Economics Association, Past President of the Society of Institutional and Organizational Economics, and Fellow of the Econometric Society and the Society of Labor Economists. He is a specialist in organizational economics, and its application to problems of incentive design in education, health and law. He is the recipient of the 2002 H. Gregg Lewis prize awarded by the Society of Labor Economists for his article "Worker Cooperation and the Ratchet " with H. Lorne Carmichael. His teaching career begun with a two year stint teaching mathematics and physics at Okundi Secondary School in Nigeria, an experience that led to his interest in economics in order to understand the large variations national economic performance. After completing his PhD in economics, he has taught at Queen s University, Universite de Montreal, Boston College, University of Southern California, California Institute of Technology and Princeton University, before coming to Columbia University. He has held one year visiting positions at CORE, Belgium, IAE, Barcelona, Russell Sage Foundation, Princeton University, the California Institute of Technology and The Institute for Advanced Studies, Princeton, NJ. He was Program Director for Personnel and Behavioral Economics, IZA, Bonn 2003-2007.Bentley holds a B.A. (with distinction) and an M.Sc. in mathematics from Queen s University, Kingston, Canada and a Ph.D. in economics from the University of British Columbia, Vancouver, Canada.