Interracial Friendships in College
利用独特纵向数据，研究大学不同阶段跨种族友谊的形成，发现黑白学生随机分配室友后成为朋友的概率与同种族室友无异，且长期看白人学生被分配黑人室友会增加其黑人朋友数量。
We use unique longitudinal data to provide direct evidence about interracial friendships at different stages of college and to provide new evidence about some of the reasons for the observed patterns of interaction. We find that, while much sorting exists at all stages of college, black and white students are, in reality, very compatible as friends; randomly assigned roommates of different races are as likely to become friends as randomly assigned roommates of the same race. Further, we find that, in the long run, being (randomly) assigned a black roommate significantly increases the number of other black friends a white student has. (c) 2010 by The University of Chicago. All rights reserved.