Peer desirability and academic achievement
利用大学新生随机分组，研究同伴的家庭收入和相貌吸引力如何影响学生成绩，发现接触高吸引力同伴能提升成绩，主要通过直接溢出和间接婚恋市场渠道。
Summary Using the random assignment of university engineering students to peer groups during introductory freshmen weeks, this paper studies how a student's parental income and facial attractiveness affect the grade outcomes of peers. The results show that exposure to highly desirable peers with respect to socioeconomic background and beauty improves grades. The results operate chiefly through a direct spillover channel and also through an indirect marriage market channel, through which exposure to high‐desirability peers improves well‐being. A field experiment suggests that the marriage market mechanism is likely to be limited to students not currently in a romantic relationship.