Group IQ differs from individual IQ

I have long wondered what it takes for collective intelligence to be better than individual intelligence. Under what circumstances and conditions will a group outperform an individual?

Boston Globe skriver om en studie av Thomas W. Malone, director of the MIT Center for Collective Intelligence: http://www.boston.com/bostonglobe/ideas/articles/2010/12/19/group_iq/?page=full

Studien har publicerats i Science.
(HT: MR)