To assess age-specific infection fatality rates (IFRs) for COVID-19, we have conducted a systematic review of seroprevalence studies as well as countries with comprehensive tracing programs. Age-specific IFRs were computed using the prevalence data in conjunction with reported fatalities four...

In this paper, we investigate the impact of attending school on body weight and obesity. We use school starting age cutoff dates to compare weight outcomes for similar age children with different years of school exposure. As is the case with academic outcomes, school exposure is related to...

This paper explores how the wage and career consequences of motherhood differ by skill and timing. Past work has often found smaller or even negligible effects from childbearing for high-skill women, but we find the opposite. Wage trajectories diverge sharply for high scoring women after, but...

Individuals who are likely to realize the largest benefits from improvements in air quality often depend on other members of their households to make time or monetary contributions to their care. The presence of these dependency relationships among household members poses challenges for benefit...

Forty years ago, 96% of six-year-old children were enrolled in first grade or above. As of 2005, the figure was just 84%. The school attendance rate of six-year-olds has not decreased; rather, they are increasingly likely to be enrolled in kindergarten rather than first grade. This paper documents...

We estimate the effects of having more mature peers using data from an experiment where children of the same age were randomly assigned to different kindergarten classrooms. Exploiting this experimental variation in conjunction with variation in expected kindergarten entry age to account for...

Some important novelists have written a great novel early in their careers and have produced lesser works thereafter, whereas others have improved their work gradually over long periods and have made their major contributions late in their lives. Which of these patterns a novelist follows...

This paper examines the careers of eleven leading American poets of the past century. Using the frequency with which poems are reprinted in anthologies as a measure of their importance, quantitative analysis reveals that among these poets there were two distinctly different life cycles: one...

Case, Lubotsky, and Paxson (2001) show that the well-known relationship between socio- economic status (SES) and health exists in childhood and grows more pronounced with age. However, in cross-sectional data it is difficult to distinguish between two possible explanations. The first is that...

Using transactions from fine art auctions for 42 leading American contemporary artists I estimate the relationship between the value of a painting and the artist's age at the date of its execution. The econometric estimates show that artists born before 1920 were likely to have done their most...