We develop a Roy model of social interactions in which individuals sort into peer groups based on comparative advantage. Two key results emerge: First, when comparative advantage is the guiding principle of peer group organization, the effect of moving a student into an environment with...

The extent to which discrimination can explain racial wage gaps is one of the most divisive subjects in the social sciences. Using a newly available dataset, this paper develops a simple empirical test which, under plausible conditions, provides a lower bound on the extent of discrimination in...

The extent to which discrimination can explain racial wage gaps is one of the most divisive subjects in the social sciences. Using a newly available dataset, this paper develops a simple empirical test which, under plausible conditions, provides a lower bound on the extent of discrimination in...

We exploit the precise timing of natural disasters to provide empirical evidence on the connection between electoral accountability and politicians’ support for special interests. We show that, in the immediate aftermath of a disaster, the evening news substantially reduce their coverage of...

Supreme Court justices often vote along ideological lines. Is this due to a genuinely different interpretation of the law, or does it reflect justices' desire to resolve politically charged legal questions in accordance with their personal views? To learn more about the nature of decision-making...

We exploit the precise timing of domestic natural disasters to study the connection between public attention to politics and legislator support for special interests. Our findings show that when a disaster strikes, the news media reduce both their coverage of politics in general as well as that...

We study the link between market forces, cross-sectional inequality, and intergenerational mobility. Emphasizing complementarities in the production of human capital, we show that wealthy parents invest, on average, more in their offspring than poorer ones. As a result, economic status persists...

Over the past 40 years the fraction of mixed race black-white births has increased nearly nine-fold. There is little empirical evidence on how these children fare relative to their single-race counterparts. This paper describes basic facts about the plight of mixed race individuals during their...

Whether individuals vote strategically is one of the most important questions at the intersection of economics and political science. Exploiting a aw in the German electoral system by which a party may gain seats by receiving fewer votes, this paper documents patterns of preference...

Since the 1960s both crime rates and the share of immigrants among the American population have more than doubled; and almost three quarters of Americans believe that immigration increases crime. Yet, existing academic research has shown no such effect. Using panel data on US counties, this paper...