1. Associate Professor of Economics, Williams College, Williamstown, Massachusetts. She is also a Research Affiliate, Center for Economic Policy Research, London, United Kingdom; Research Fellow, Institute for the Study of Labor (IZA), Bonn, Germany; and Research Fellow, William Davidson Institute, University of Michigan, Ann Arbor, Michigan.
2. Professor of Economics, Harvard University, and Research Associate, National Bureau of Economic Research, both in Cambridge, Massachusetts.