Since social distancing is the primary strategy for slowing the spread of many diseases, understanding why U.S. counties respond differently to COVID-19 is critical for designing effective public policies. Using daily data from about 45 million mobile phones to measure social distancing we...

The United States led all other nations in the development of universal and publicly-funded secondary school education and much of the growth occurred from 1910 to 1940. The focus here is on the reasons for the high school movement' in American generally and why it occurred so early and swiftly...

The paper first assesses regional and ethnic group differences in social trust and memberships in both Canada and the United States. The ethnic categories people choose to describe themselves are as important as regional differences, but much less important than education, in explaining...

In this paper--the first in a series of two papers that use data on 21 billion friendships from Facebook to study social capital--we measure and analyze three types of social capital by ZIP code in the United States: (i) connectedness between different types of people, such as those with low vs....

Low levels of social interaction across class lines have generated widespread concern and are associated with worse outcomes, such as lower rates of upward income mobility. Here, we analyze the determinants of cross-class interaction using data from Facebook, building upon the analysis in the...

We study the shifts in U.S. firms' workforce composition and organization associated with the use of AI technologies. To do so, we leverage a unique combination of worker resume and job postings datasets to measure firm-level AI investments and workforce composition variables, such as...

Timely and accurate measurement of AI use by firms is both challenging and crucial for understanding the impacts of AI on the U.S. economy. We provide new, real-time estimates of current and expected future use of AI for business purposes based on the Business Trends and Outlook Survey for...

To identify the determinants of social capital formation, it is necessary to understand the social capital investment decision of individuals. Individual social capital should then be aggregated to measure the social capital of a community. This paper assembles the evidence that supports the...

To identify the effect of social capital on financial development, we exploit the well-known differences in social capital and trust (Banfield (1958), Putnam (1993)) across different parts of Italy, using microeconomic data on households and firms. In areas of the country with high levels of...

Using a sample of Harvard undergraduates, we analyze trust and social capital in two experiments. Trusting behavior and trustworthiness rise with social connection; differences in race and nationality reduce the level of trustworthiness. Certain individuals appear to be persistently more...