Empirical evidence suggests that top players often play together in one team. Based on the "O-ring theory" (Kremer 1993) a Zidane clustering theorem is derived. It is argued that the best midfielder is most efficiently allocated when combined with an ace striker, and vice versa. This implies...

It is argued that individuals who strongly identify with a group evaluted the individual-level costs and benefits that drive expectancy-value processes based on the group-level consequences of the action. The extent to which ingroups and outgroups approve of available alternatives, i.e. group...

An experimental study examined the combined influence of work style diversity and informational diversity within task groups (N=101 dyads) on work process and work outcome. During a ten minute discussion, dyads had to choose one out of three organizations for a joint internship. Work style...