Election results act as powerful signals, shaping social behavior in ways that can be dramatic and even violent. This paper shows how racial violence in the post-Reconstruction U.S. South was tied to the local performance of the anti-Black Democratic Party in presidential elections. Using a...

We examine the role of ethnic politics at the local level in supplying public goods within a framework that incorporates two sides to ethnic groups: an inclusionary side associated with internal cooperation and an exclusionary side associated with the disregard for others. The inclusionary...

Ethnic divisions have been shown to adversely affect economic performance and political stability, especially in Africa, but the underlying reasons remain contested, with multiple mechanisms potentially playing a role. We utilize lab experiments to isolate the role of one such mechanism--ethnic...

After generations of loyalty, Southern whites left the Democratic party en masse in the second half of the twentieth century. To what extent did Democrats' 1960s Civil Rights initiatives trigger this exodus, versus Southern economic development, rising political polarization or other trends that...

We study the relationship between ethnicity, occupational choice, and entrepreneurship. Immigrant groups in the United States cluster in specific business sectors. For example, Koreans are 34 times more likely than other immigrants to operate dry cleaners, and Gujarati-speaking Indians are 108...

The largest and most important flow of scientific talent in the world is the migration of international students to the doctoral programs offered by universities in industrialized countries. This paper uses the opening of China in 1978 to estimate the causal effect of this flow on the...

This research establishes that the emergence, prevalence, recurrence, and severity of intrastate conflicts in the modern era reflect the long shadow of prehistory. Exploiting variations across national populations, it demonstrates that genetic diversity, as determined predominantly during the...

We use a variant of the Implicit Association Test (IAT) to examine individuals' implicit attitudes towards various ethnic groups. Using a population from the Democratic Republic of Congo, we find that the IAT measures show evidence of an implicit bias in favor of one's own ethnicity. Individuals...