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...

Retirement income security refers to the ability of households to provide an adequate stream of income during the period of their retirement from the labor force. Expected retirement income is based of four components: (i) standard non-pension wealth holdings, (ii) defined contribution (DC)...

Using the Survey of Consumer Finances, I find that the Black/white gap in standard net worth widened from 1989 to 2019 but narrowed between Hispanics and (non-Hispanic) whites. When the definition of wealth is expanded to incorporate Social Security and defined benefit pension wealth (both the...

Recent work on wealth inequality based on the capitalization method wherein aggregate wealth totals are distributed in proportion to various forms of income like dividends has motivated a concern about whether rates of return on assets vary across the wealth distribution. In this study, I use a...

We construct a public atlas of children's outcomes in adulthood by the Census tract in which they grew up using anonymized longitudinal data covering nearly the entire U.S. population. For each tract, we estimate children's earnings distributions, incarceration rates, and other out-comes in...

We study the sources of racial and ethnic disparities in income using de-identified longitudinal data covering nearly the entire U.S. population from 1989-2015. We document three sets of results. First, the intergenerational persistence of disparities varies substantially across racial groups....

We present new evidence on trends in intergenerational mobility in the U.S. using administrative earnings records. We find that percentile rank-based measures of intergenerational mobility have remained extremely stable for the 1971-1993 birth cohorts. For children born between 1971 and 1986, we...

We use administrative records on the incomes of more than 40 million children and their parents to describe three features of intergenerational mobility in the United States. First, we characterize the joint distribution of parent and child income at the national level. The conditional...

We estimate the causal effect of each county in the U.S. on children's incomes in adulthood. We first estimate a fixed effects model that is identified by analyzing families who move across counties with children of different ages. We then use these fixed effect estimates to (a) quantify how...