Although microeconomic studies find a positive relationship between R&D and skill premia, much of the recent rise in U.S. wage inequality was accompanied by slowing labor-productivity growth and relatively slow introduction of new technologies. These conflicting observations are consistent with the effects of a skewed distribution of “absorptive capacities”—the rate at which technology-specific skills can be acquired—in a model of endogenous technological change. The framework is used to assess whether the productivity slowdown and the rise in wage inequality can be jointly accounted for by the contemporaneous decline in the growth rate of labor quality. (JEL E24, J31, O3)

We characterize an equilibrium development process driven by the interaction of the distribution of wealth with credit constraints and the distribution of entrepreneurial skills. When efficient entrepreneurs are relatively abundant, a “traditional” development process emerges in which the evolution of macroeconomic variables accord with empirical regularities and income inequality traces out a Kuznets curve. If, instead, efficient entrepreneurs are relatively scarce, the model generates long-run “distributional cycles” driven by the endogenous interaction between credit constraints, entrepreneurial efficiency and equilibrium wages.

Reviews the book "America's Needs and Resources: A New Survey," by J. Frederic Dewhurst and others.

Reviews the book "National Income Statistics of Various Countries, 1938-1948."