DANIELE ARCHIBUGI Technological Director, Italian National Research Council, Rome VICENZO ATELLA Department of Economics, University of Rome 'Tor Vargata' JONATHAN EATON Department of Economics, Boston University SAMUEL KORTUM Department of Economics, Boston University CHARLES I. JONES Department of Economics, University of California, Berkeley DALE W. JORGENSON Department of Economics, Harvard University ROSS LEVINE Carlson School of Management, University of Minnesota GIANCARLO MARINI Department of Economics, University of Rome 'Tor Vergata' JONATHAN MICHIE Management Department, Birkbeck College, London RICHARD R. NELSON George Blumenthal Professor of International and Public Affairs, Business and Law, Columbia University HOWARD PACK Professor of Economics, University of Pennsylvania DARIUS PALIA Rutgers University, USA EDMUND S. PHELPS Department of Economics, Columbia University, New York BENIAMINO QUINTIERI Department of Economics, University of Rome 'Tor Vergata' PASQUALE LUCIO SCANDIZZO Department of Economics, University of Rome 'Tor Vergata' PASQUALE SCARAMOZZINO School of Oriental and African Studies, University of London