Many organizations rely on teamwork, and yet field evidence on the impacts of team-basedincentives remains scarce … productivity and composition of teams. Strengthening incentives, either throughrankings or tournaments, makes workers more likely … to form teams with others of similarability instead of with their friends. Introducing rank incentives however reduces …

operationalize measurement of group cohesion, adapting the "oneness scale" from psychology. A series of experiments, including a pre …

We ran a field experiment to investigate whether individual performance in teams depends on the gender of the leader …. About 430 students from an Italian University took an intermediate exam that was partly evaluated on the basis of teamwork …. Students were randomly matched in teams of three and in each team we randomly chose a leader with the task of coordinating the …

Pareto-efficient equilibrium. We find that teams with elected leaders coordinate on higher effort levels. Initially, the …

we find that female teams lower their contribution to the public good in case of low likability, while male teams achieve … high levels of cooperation irrespective of the level of mutual likability. In mixed sex teams, both females' and males … on gender differences in labor market outcomes: mutual dislikability impedes team behavior, except in all-male teams …

We investigate whether and how social ties affect performance in teams by implementing a field experiment in which a … sample of undergraduate students are randomly assigned to either teams composed by friends or teams composed by individuals … socially connected teams perform significantly better than control students in both the team part and the individual part of …

side, by magnifying the prevalence of anti-social behavior towards outsiders. A large-scale experiment implemented in …