This paper presents evidence that gasoline prices have a larger effect on demand for electric vehicles (EVs) than electricity prices in California. We match a spatially-disaggregated panel dataset of monthly EV registration records to detailed records of gasoline and electricity prices in...

We use newly digitized records from the U.S. Post Office to study how strengthening state capacity affects public service delivery and innovation in over 2,800 cities between 1875-1905. Exploiting the gradual expansion of a major civil service reform, cities with a reformed postal office...

We provide the first analysis of racial in-group bias in Type-I and Type-II errors. Using player-referee matched data from NBA games we show that there is no overall racial bias or in-group bias in foul calls made by referees. Similarly, there is no racial bias or in-group bias in Type-I errors...

We estimate the effect of local access to office-based mental healthcare on juvenile arrest outcomes. We leverage variation in the number of mental healthcare offices within a county over the period 1999 to 2016 in a two-way fixed-effects model. Office-based treatment is the most common modality...

Congress responded to the COVID pandemic's disruptions to instruction with unprecedented federal aid for school districts. While this relief has been widely characterized as a major windfall for K-12 education, per-pupil amounts vary considerably across districts, as will the costs districts...

Provider payments are the key determinant of insurance generosity within many health insurance programs covering low-income populations. This paper analyzes the effects of a large, federally-mandated provider payment increase for primary care services provided to low-income elderly and disabled...

This article proposes and evaluates four hypotheses about US pollution and environmental policy over the last half century. First, air and water pollution have declined substantially, although greenhouse gas emissions have not. Second, environmental policy explains a large share of these trends....

We study the relative effectiveness of administrative regulations, criminal enforcement, and civil lawsuits for combatting health care fraud. Between 2003 and 2017, Medicare spent $7.7 billion on 37.5 million regularly scheduled, non-emergency ambulance rides for patients traveling to and from...

Accurately determining the number of excess deaths caused by the COVID-19 pandemic is hard. The most important challenge is accurately estimating the counterfactual count of baseline deaths that would have occurred in its absence. This analysis used new methods to: estimate this baseline metric;...

As is well known, during the pandemic recession firms directly exposed to the virus, i.e. the "contact" sector, contracted sharply and recovered slowly relative to the rest of the economy. Less understood is how firms that "won" by offering safer substitutes for contact sector goods have...