Understanding Social Interactions: Evidence from the Classroom
研究通过课堂学生表现数据，区分了三种社会互动机制，发现互保机制最能解释行为聚集现象，对团队合作、班级分组和学术合作有政策启示。
Little is known about the economic mechanisms leading to the high level of clustering in behaviour commonly observed in the data. We present a model where agents can interact according to three distinct mechanisms and we derive testable implications which allow us to distinguish between the proposed mechanisms. In our application we study students' performance and we find that a mutual insurance mechanism is consistent with the data. Such a result bears important policy implications for all those situations in which social interactions are important, from teamwork to class formation in education and co‐authorship in academic research.