The "Hawthorne effect" draws its name from a landmark set of studies conducted at the Hawthorne plant in the 1920s. The data from the first and most influential of these studies, the "Illumination Experiment," were never formally analyzed and were thought to have been destroyed. Our research has...

Understanding how heterogeneity in peer group composition affects academic attainment has important implications for how schools organize students in group settings. The random assignment of cadets to companies at West Point affords an opportunity to investigate this issue empirically. Estimates...

Using panel data from a large hospital system, this paper presents estimates of the productivity effects of human capital in a team production environment. Proxying nurses' general human capital by education and their unit-specific human capital by experience on the nursing unit, we find that...

Using state-level variation in the timing of political reforms, we find that an increase in female representation in local government induces a large and significant rise in documented crimes against women in India. Our evidence suggests that this increase is good news, driven primarily by...

Decades of research on the US gender gap in wages describes its correlates, but little is known about why women changed their career paths in the 1960s and 1970s. This paper explores the role of "the Pill" in altering women's human capital investments and its ultimate implications for life-cycle...

We estimate the effect of television on fertility in Brazil, where soap operas portray small families. We exploit differences in the timing of entry into different markets of Globo, the main novela producer. Women living in areas covered by Globo have significantly lower fertility. The effect is...

This paper evaluates the impact of three major expansions in maternity leave coverage in Germany on children's long-run outcomes. To identify the causal impact of the reforms, we use a difference-indifference design that compares outcomes of children born shortly before and shortly after a...

We present in this paper evidence about the effects and mechanisms of gender peer effects in elementary, middle, and high schools. For identification, we rely on idiosyncratic variations in gender composition across adjacent cohorts within the same schools. We find that an increase in the...

This paper uses the Islamic holy month of Ramadan as a natural experiment in diurnal fasting and fetal health. Among births to Arab parents in Michigan, we find prenatal exposure to Ramadan results in lower birth weight. Exposure in the first month of gestation also reduces the number of male...

This paper uses a new dataset on child-adoption matching to estimate the preferences of potential adoptive parents over US-born and unborn children relinquished for adoption. We identify significant preferences favoring girls and against African American children put up for adoption. These...