The past century and a quarter has seen frequent improvements in track and field records. We attempt to estimate what proportion of the speed of record breaking is due to globalization (competitors from more countries) and what proportion is due to technological progress (better equipment and...

This paper analyzes theoretically and empirically the role and significance of occupational mobility in the labor market, focusing on individuals' careers. It provides additional dimensions to the analysis of investment in human capital; wage differences across individuals; and the relationships...