An extensive study in 'Groupthink' which included testing the social sensitivity, as well as the IQ of the individuals, showed that:
- Equal participation was a key ingredient of better performance. Group dynamics can get worse if team members clash frequently.
- If team members are pitted against each other for a common prize, like a promotion, then group work suffers.
- If team members are not open to ideas from other members or are interrupting them, it can sabotage group performance.
- Teams with a higher proportion of women have better collective intelligence.