Measuring Group Cohesion to Reveal the Power of Social Relationships in Team Production
将心理学中的“一体感量表”引入经济学，通过实验测量群体凝聚力，发现高凝聚力群体在弱链接协调博弈中更易实现高绩效，并揭示信念而非社会偏好是主要机制。
Abstract We introduce group cohesion to study the economic relevance of social relationships in team production. We operationalize measurement of group cohesion, adapting the “oneness scale” from psychology. A series of experiments, including a preregistered replication, reveals strong, positive associations between group cohesion and performance assessed in weak-link coordination games, with high-cohesion groups being likely to achieve superior equilibria. In exploratory analysis, we identify beliefs rather than social preferences as the primary mechanism through which factors proxied by group cohesion influence group performance. Our evidence provides proof of concept for group cohesion as a useful tool for economic research and practice.