Are Ghettos Good or Bad?
研究种族居住隔离对黑人教育、就业和单亲家庭等经济表现的影响，发现隔离程度越高，黑人结果越差，减少隔离可缩小黑白差异。
Spatial separation of racial and ethnic groups may theoretically have positive or negative effects on the economic performance of those groups. We examine the effects of segregation on outcomes for blacks in schooling, employment, and single parenthood. We find that blacks in more segregated areas have significantly worse outcomes than blacks in less segregated areas. We control for the endogeneity of location choice using instruments based on political factors, topographical features, and residence before adulthood. A one standard deviation decrease in segregation would eliminate one-third of the black-white differences in most of our outcomes.