Wolff, Edward N. - In: International Productivity Monitor 1 (2000) Fall, pp. 17-22
.S. productivity levels during the postwar period and finds strong evidence for this phenomenon up to 1990, with rapid growth in … investment, education, and R&D in OECD countries accounting for the catch-up. The process of convergence seems to have ended in … the narrowing of the productivity gap with the United States, and perhaps most important, the acceleration of productivity …