The General Educational Development (GED) credential is issued on the basis of an eight-hour subject-based test. The test claims to establish equivalence between dropouts and traditional high school graduates, opening the door to college and positions in the labor market. In 2008 alone, almost...

In The Bell Curve, Herrnstein and Murray argue that the U.S. economy is a meritocracy in which differences in wages (including differences across race and gender) are explained by differences in cognitive ability. In this paper we test their claim for wages conditional on occupation using a...

This paper presents economic models of child development that capture the essence of recent findings from the empirical literature on skill formation. The goal of this essay is to provide a theoretical framework for interpreting the evidence from a vast empirical literature, for guiding the next...

This paper discusses recent advances in our understanding of differences in human abilities and skills, their sources, and their evolution over the lifecycle.

The General Educational Development (GED) credential is issued on the basis of an eight hour subject-based test. The test claims to establish equivalence between dropouts and traditional high school graduates, opening the door to college and positions in the labor market. In 2008 alone, almost...

This paper compares early childhood enrichment programs that promote social mobility for disadvantaged children within and across generations. Instead of conducting a standard meta-analysis, we present a harmonized primary data analysis of programs that shape current policy. Our analysis is a...