· Research Scientist, Massachusetts Institute of Technology2006–
· Associate Research Scholar of Finance and Economics, Columbia University1997–2002
· Research Assistant, Massachusetts Institute of Technology1997–
· Ph.D. in Economics, Stanford University1992–
· Assistant Professor of Finance and Economics, Columbia University1991–1996
· Consultant, Independent Economic and Strategy Consultant1991–
· Graduate Student Intern, RAND Corporation1990–
· Senior Consultant, Economic Analysis Group, Ltd.1985–1987
· Manager of Financial Analysis, MCI Telecommunications1985–
· Senior Financial Analyst, MCI Telecommunications1984–
· MBA, The Wharton School, University of Pennsylvania1984–
· MSE in Chemical Engineering, University of Pennsylvania1984–
· Graduate Student Intern, Office of Management and Budget1983–
· Research Assistant, Putnam, Hayes and Bartlett1980–1982
· BA in European History, University of Pennsylvania1979–
· BS in Chemical Engineering, University of Pennsylvania1979–