An extensive literature in the social sciences analyzes peer effects among students, but estimation is complicated by several major problems some of which cannot be solved even with random assignment. We design a field experiment and propose a new estimation technique to address these estimation...

An extensive literature in the social sciences analyzes peer effects among students, but estimation is complicated by several major problems some of which cannot be solved even with random assignment. We design a field experiment and propose a new estimation technique to address these estimation...

Many small businesses closed in the pandemic, but were economic losses disproportionately felt by businesses owned by people of color? This paper provides the first study of the impacts of COVID-19 on racial inequality in business earnings. Pandemic-induced losses to business earnings in 2020...

EdTech, which includes computer assisted learning (CAL), online education, and remote instruction, was expanding rapidly even before the current full-scale substitution for in-person learning at all levels of education around the world because of COVID-19. Studies of CAL interventions often find...

Many small businesses closed in the pandemic, but were economic losses disproportionately felt by businesses owned by people of color? This paper provides the first study of the impacts of COVID-19 on racial inequality in business earnings. Pandemic-induced losses to business earnings in 2020...

Many small businesses closed in the pandemic, but were economic losses disproportionately felt by businesses owned by people of color? This paper provides the first study of the impacts of COVID-19 on racial inequality in business earnings. Pandemic-induced losses to business earnings in 2020...

Although enrollment at California’s four-year public universities mostly remained unchanged by the pandemic, the effects were substantial for students at California Community Colleges, the largest higher education system in the country. This paper provides a detailed analysis of how the...

Although enrollment at California's four-year public universities mostly remained unchanged by the pandemic, the effects were substantial for students at California Community Colleges, the largest higher education system in the country. This paper provides a detailed analysis of how the pandemic...