Lawrence F. Katz is the Elisabeth Allison Professor of Economics at Harvard University and a Research Associate of the National Bureau of Economic Research. His research focuses on issues in labor economics and the economics of social problems. He is the author (with Claudia Goldin) of The Race between Education and Technology (Harvard University Press, 2008), a history of U.S. economic inequality and the roles of technological change and the pace of educational advance in affecting the wage