Empirical studies of factor proportion theory face the challenge of measuring factor abundance in a world with many factors of production and countries. This paper introduces a mean weighted measure of factor abundance, and using data for nine factors and 33 countries, presents the resulting...

The hypothesis that per capita output converges across economies over time represents one of the oldest controversies in economics. This essay surveys the history and development of the hypothesis, focusing particularly on its vast literature since the mid-1980s. A summary of empirical analyses,...

The Factor Price Equalization theorem implies that freer trade would narrow the gap in returns to similar productive factors across countries over time. To determine the empirical relevance of this implication, data for 11 industries in 14 countries over the period 1970–1985 are...