How groups make good decisions

Most important decision made in any organisation are made by groups or teams of people. Some of these decisions can be great, or they can be terrible. A study at MIT has found the factors that influence which groups make better decisions include: an equal contribution from all members, the ability to read visual clues in others, and the greater number of women in the group.

http://www.nytimes.com/2015/01/18/opinion/sunday/why-some-teams-are-smarter-than-others.html