Does student aid increase college attendance or simply subsidize costs for infra-marginal students? Settling the question empirically is a challenge, because aid is correlated with many characteristics that influence educational investment decisions. A shift in financial aid policy that affects...

The durability of health care treatment, the substantial technical change in health care treatment, and the prevalence of third-party payment interact to create substantial difficulty in measuring the price and output of health care. This paper provides a framework for analyzing the demand for...

In what follows we provide a conceptually correct procedure for determining whether a risky project passes the "potential Pareto improvement" welfare criterion which forms the normative basis of cost-benefit analysis. In this approach the role of secondary markets in providing opportunities for...

Striking evidence is presented of a previously unremarked transformation of urban structure from mainly sectoral to mainly functional specialization. We offer an explanation showing that this transformation is inextricably interrelated with changes in firms' organization. A greater variety of...

This paper points out the similarities and differences between cost-benefit analysis and tax reform. By restricting the analysis to the margin it is shown that both areas can be handled by the same method. In both areas, there is a need to define social distributional weights and to evaluate the...

This paper examines the role of medical care in improving health and compares that value of better health produced by medical care with the costs of that care. Valuing medical care requires measuring the health of the population. We start by developing a measure of the nation's health capital --...

This paper formulates and estimates an open-economy overlapping generation general-equilibrium model of endogenous heterogeneous human capital in the form of schooling and on-the-job training. Physical capital accumulation is also analyzed. We use the model to explain rising wage inequality in...