Unobserved ability heterogeneity has long been postulated to play a key role in human capital development. Traditional strategies to estimate education production functions do not allow for varying role or development of unobserved ability as a child ages. Such restrictions are highly...

This paper offers an explanation for observed differences across countries in educational policies and in resulting interpersonal distributions of human capital. We analyze a general-equilibrium model in which, as a result of the apportionment of natural ability, nurturing, and publicly financed...

This paper considers alternative policies for promoting skill formation that are targetted to different stages of the life cycle. We demonstrate the importance of both cognitive and noncognitive skills that are formed early in the life cycle in accounting for racial, ethnic and family background...

Policies that improve early life human capital are a promising tool to alter disadvantaged children's lifelong trajectories. Yet, in many low-income countries, children and their parents face tradeoffs between schooling and productive work. If there are positive returns to human capital in child...

This paper develops a model of crime in which human capital increases the opportunity cost of crime from foregone work and expected costs associated with incarceration. Older, more intelligent, and more educated adults should commit fewer street (unskilled) crimes. White collar crimes decline...

This paper reviews some of the econometric methods that have been used in the economics of education. The focus is on understanding how the assumptions made to justify and implement such methods relate to the underlying economic model and the interpretation of the results. We start by...

A structural model of the demand for college attendance is derived from the theory of comparative advantage and recent statistical models of self-selection and unobserved components. Estimates from NBER-Thorndike data strongly support the theory. First, expected lifetime earnings gains influence...

We document three new facts about entrepreneurship. First, a majority of male entrepreneurs start a firm in the same or a closely related industry as their fathers' industry of employment. Second, this tendency is correlated with intelligence: higher-IQ entrepreneurs are less likely to follow...

This paper analyzes the relationship between brain drain, human capital accumulation and individual net incomes in the presence of a redistributional tax policy, credit market constraints, administrative costs of tax collection, and lack of government commitment. We characterize how decreasing...

The hypothesized effects of educational attainment on adult civic engagement and attitudes provide some of the most important justifications for government intervention in the market for education. In this study, I present evidence on whether these externalities exist. I assess and implement two...