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A professor of evolutionary psychology says human beings cannot maintain more than 150 friendships — or five close friendships — at any given time, and claims he has proven it using phone call data sets in his new study.
“The social brain hypothesis predicts that humans have an average of about 150 relationships at any given time,” the study states. “Within this 150, there are layers of friends of an ego, where the number of friends in a layer increases as the emotional closeness decreases.”
Robin Dunbar came up with his theory of Dunbar’s Numbers in the early 1990s. The idea is that humans cannot have more than 150 friends due to limitations of brain size, attention span, and the amount of time to nurture close friendships.
http://news.nationalpost.com/news/world/humans-only-able-to-maintain-five-relationships-in-their-inner-circle-and-150-in-their-outer-circle-study-finds
“The social brain hypothesis predicts that humans have an average of about 150 relationships at any given time,” the study states. “Within this 150, there are layers of friends of an ego, where the number of friends in a layer increases as the emotional closeness decreases.”
Robin Dunbar came up with his theory of Dunbar’s Numbers in the early 1990s. The idea is that humans cannot have more than 150 friends due to limitations of brain size, attention span, and the amount of time to nurture close friendships.
http://news.nationalpost.com/news/world/humans-only-able-to-maintain-five-relationships-in-their-inner-circle-and-150-in-their-outer-circle-study-finds
British anthropologist Robin Dunbar and his team found four “layers” of friends with each growing a little larger — the most intimate being 4.1 best friends, then 11.0 relatively close friends, then 29.0 in the third layer and 128.9 in the last.
While there are slightly larger or small numbers for extroverts and introverts, almost everyone has only about four close friends, researchers said. The constraints of waking hours and the human brain’s capacity limit the number of people who can truly be your best of friends, researchers said.
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