We analyze the characteristics of the social networks of students studying in the economics department in one Russian … individual characteristics of students and their peers. We find that the probability of a tie existing is explained by the gender … homophily, and initial student assignment to the same exogenously defined study group. Students ask for help and form …

university students who we randomly assign to study groups. Our results show that students become more similar to their peers … along several dimensions. Students with more competitive peers become more competitive, students with more open-minded peers … become more open-minded, and students with more conscientious peers become more conscientious. We see no significant effects …