· Chief Economist, Human Development Network, World Bank2004–2007
· Li Ka Shing Professor of Economics, University of California, Berkeley1996–
· Visiting Professor, Department of Economics, Harvard University1994–1996
· Senior Economist, RAND1988–1994
· Assistant Professor, Department of Health Policy and Management, Harvard School of Public Health1986–1988
· PhD in Economics, University of Wisconsin-Madison1985–
· Assistant Professor, Department of Economics, SUNY Stony Brook1984–1986
· B.A. in Economics, University of Wisconsin-Madison1978–