Friendships

It doesn’t matter how many Facebook friends or Twitter followers you have—the human brain is onlycapable of managing up to 150 relationships, says research from Oxford University. The theory—“Dunbar’s number,” as they call it, for its founder Robin Dunbar—first surfaced in the 1990s when Dunbar examined a variety of societies and found humans could manage no more relationships, regardless of extroversion. Now the evolutionary anthropology professor is looking to see if social networking sites, like Facebook, increase the human capacity for friendships. Initial observations suggest not.

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