We study the causal effects and policy implications of global supply chain disruptions. We construct a new index of supply chain disruptions from the mandatory automatic identification system data of container ships, developing a novel spatial clustering algorithm that determines real-time...

This paper develops a model of news discernment to explore the influence of elections on the formation of partisan-driven parallel information universes. Using survey data from news quizzes administered during and outside the 2020 U.S. presidential election, the model shows that partisan...

We study the impact of state-owned enterprises (SOEs) on the quality of entrepreneurship in China. Using long series of firm registration and performance data, we document that the massive SOE downsizing in the late 1990s significantly improved the quality of entrepreneur- ship. Compared with...

We examine mortality differences between Americans with and without a four-year college degree over the period 1992 to 2021. From 1992 to 2010, both groups saw falling mortality, but with greater improvements for the more educated; from 2010 to 2019, mortality fell for those with a BA and rose for...

Despite the well-established importance of verbal engagement for infant language and cognitive development, many parents in low-income contexts do not converse with their infants regularly. We report on a randomized field experiment evaluating a low-cost intervention that aims to raise verbal...

The CDC reports that 1.13 million Americans have died of COVID-19 through June of 2023. I use a model of the impact over the past three years of vaccines and private and public behavior to mitigate disease transmission during the COVID-19 pandemic in the United States to address two questions....

We present evidence from a randomized trial of the impact of matching workers to jobs using the deferred acceptance (DA) algorithm. Our setting is the U.S. Army's annual many-to-one marketplace that matches 10,000 officers to units. Officers and jobs are partitioned into over 100 distinct...

Research on the political and social impacts of financial crises has focused chiefly on free market economies, hindering our understanding of their effects in other settings. We exploit an episode of a financial crisis that hit the Israeli kibbutzim to study its impact in a socialist context....

The US spends more than 4 trillion dollars per year on health care, largely conducted by private providers and reimbursed by insurers. A major concern in this system is overbilling, waste and fraud by providers, who face incentives to misreport on their claims in order to receive higher...