Bachelor summa cum laude, Harvard University, 1980. Doctor of Philosophy in Economics, Massachusetts Institute of Technology, 1984.
Assistant professor Harvard University, Cambridge, Massachusetts, 1984-1988, associate professor, 1988—1992. Professor economics Georgetown University, 1992—2007. Senior fellow economic studies Brookings Institute.
Joan and Sanford Weill dean, professor public policy Gerald R. Ford School Public Policy and Economics, University Mich, since 2007. Senior staff economist President's Council Economic Advisers, 1989—1990. Research associate National Bureau of Economic Research.
Member advisory committee Institute International Economics.
Member American Economics Association, National Economics Association, Society Values in Higher Education, Phi Beta Kappa.