The majority of informal finance, in developed and developing countries, is provided by family and friends. Yet existing models of informal finance better fit “informal moneylenders” insomuch as they fail to match two salient characteristics of family finance: family investors often accept...

This paper studies how in utero exposure to maternal stress from family ruptures affects later mental health. We find that prenatal exposure to the death of a maternal relative increases take-up of ADHD medications during childhood and anti-anxiety and depression medications in adulthood....

We examine the long-term consequences of teacher discretion in grading of high-stakes tests. Bunching in Swedish math test score distributions reveal that teachers inflate students who have "a bad test day," but do not to discriminate based on immigrant status or gender. By developing a new...

The role of social ties in governance is controversial. We theorize that this ambivalence is natural: Social ties transmit incentives between individuals, so how they affect governance hinges on the specific incentives transmitted. We show this in a principal-supervisor-agent model where the...

The health care system commonly relies on information about family medical history in the allocation of screenings and in diagnostic processes. At the same time, an emerging literature documents that treatment for "marginally diagnosed" patients often has minimal impacts. This paper shows that...

The Affordable Care Act (ACA) established health insurance marketplaces where consumers can buy individual coverage. Leveraging novel credit card and bank account micro-data, we identify new enrollees in the California marketplace and measure their health spending and premium payments. Following...

We analyze the diffusion of rival information in a social network. In our model, rational agents can share information sequentially, unconstrained by an exogenous protocol or timing. We show how to compute the set of eventually informed agents for any network, and show that it is essentially...