Two major factors seem to determine the smarts of the group as a whole: 1) The average social intelligence of the members (again, rather than IQ). This means that groups containing higher percentage of women generally do better, even up to 100% women, as women commonly have a slight advantage over men in this area. This holds true even if people interact online only by text chats. 2) The structure of the group. More evenly distributed talking time, more total communication, less of a clear leader, more democratic decision making, moderate level of diversity among group members when it comes
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