We study how two distinct dimensions of peer ethnic diversity (ethnic fractionalization and ethnic polarization) affect … schools, we find evidence for two opposing effects. Ethnic fractionalization increases the likelihood of students sorting into … people-oriented occupations while ethnic polarization reduces this likelihood. Using data on social and cognitive skills, we …

the degree of fractionalization and polarization across ethnic, linguistic, and religious groups in the national …

points) is identified. The theory predicts war to be more likely when resource and group concentration are high, and the …