Chay, Guryan and Mazumder (2009) found substantial racial convergence in AFQT and NAEP scores across cohorts born in the 1960's and early 1970's that was concentrated among blacks in the South. We demonstrated a close tracking between variation in the test score convergence across states and...

We argue that the environment determines life span, using historical data to show that such indicators of environmental insults in early childhood and young adulthood as quarter of birth, residence, occupation, wealth, and the incidence of specific infectious diseases affected older age...

To American and European economists in 1945, the countries of Asia were unpromising candidates for high economic growth. In 1950 even the most prosperous of these countries had a per capita income less than 25 percent of that of the United States. Between the mid-1960s and the end of the...

Birth weight has emerged as the leading indicator of infant health and welfare and the central focus of infant health policy. This is because low birth weight (LBW) infants experience severe health and developmental difficulties that can impose enormous costs on society. But would the prevention...

We examine the effects of total suspended particulates (TSPs) air pollution on infant health using the air quality improvements induced by the 1970 Clean Air Act Amendments (CAAA). This legislation imposed strict regulations on industrial polluters in nonattainment' counties with TSPs...

Over the past three centuries there has been a rapid accumulation of physiological capital in OECD countries. Enhanced physiological capital is tied to long-term reduction in environmental hazards and to the conquest of chronic malnutrition. Data on heights and birth weights suggests that...

I demonstrate that although socioeconomic differences in birth weight have always been" fairly small in the United States, they have narrowed since the beginning of this century. I argue" that maternal height, and therefore the mother's nutritional status during her growing years accounted for...

Functional disability (difficulty in walking , difficulty in bending, paralysis, blindness in at least one eye, and deafness in at least one ear) in the United States has fallen at an average annual rate of 0.6 percent among men age 50 to 74 from the early twentieth century to the early 1990s....

One way to demonstrate how remarkable changes in the process of aging have been is to compare health over the life cycles of 3 cohorts. For the first cohort, born between 1835 and 1845 (the Civil War cohort), life was short and disabilities were common even at young ages. Other factors...

We find that veterans of the Union Army who faced greater wartime stress (as measured by higher battlefield mortality rates) experienced higher mortality rates at older ages, but that men who were from more cohesive companies were statistically significantly less likely to be affected by wartime...