Does School Desegregation Promote Diverse Interactions? An Equilibrium Model of Segregation within Schools
利用学生友谊数据估计交友均衡模型，发现学生偏好同种族直接和间接朋友，但收入异质性存在；模拟种族与收入再分配政策对校内隔离和网络结构的影响。
This paper studies racial segregation in schools using data on student friendships from Add Health. I estimate an equilibrium model of friendship formation, with preferences allowing both homophily and heterophily in direct and indirect ties. I find that homophily goes beyond direct links: students also prefer racially homogeneous indirect friends, while there is heterophily in income. I simulate policies reallocating students across schools. Race-based policies have nonlinear effects on within-school segregation and other network features such as clustering and centrality. Policies increasing diversity through reallocations based on income have less impact on racial segregation.