Abstract:
Should gender composition be taken into account when forming teams? This paper examines how the output of teams completing tasks similar to those performed in many workplaces is influenced by their gender composition. Leveraging an economics bachelor course in which students are randomly paired together, we document large differences in performance grades by the gender make-up of the team. All-male teams are significantly outperformed by both mixed and all-female teams. These differences remain even when comprehensively controlling for the individual task aptitude of each of the group members, as well as other characteristics potentially relevant for teamwork that may vary by gender. Exploring mechanisms, we find suggestive evidence that women have greater preferences for cooperation, and - even when controlling for individual ability - exert higher effort levels in teams compared to men. This asymmetry appears to lead to members of mixed-gender teams reporting the worst team experiences.