In this paper, I briefly review the literature on commodity prices as it touches on African economic development; fuller accounts are given in Gersovitz and Paxxon, Deaton and Miller and Collier and Gunning. In the next section, I provide some data that documents who exports what, and what has...

This study uses Social Security earnings records matched to recent cross{sections of the SIPP and CPS to study the earnings progress of U.S. immigrants. The data show that immigrants' earnings grow 10 to 13 percent during their rst twenty years in the U.S. relative to the earnings of natives...

In this paper, we demonstrate that the empirical evidence is exactly the opposite of the theo-retical predictions. With total household expenditure per capita (PCE) held constant, expenditure per head on food falls with the number of heads. The result appears to be quite general; we find it not...