What Is Dunbar’s Number?

The number Dunbar proposed, 150, has since been known as “Dunbar’s number.” In 1992, the hypothesis was put forward that there are a number of stable relationships that can be maintained by a person. On the other hand, it was questioned whether Dunbar’s number indicated a cognitive limit to network size. Facebook users now have more than twice as many relationships as Dun’s estimated 150, and many have suggested that Dunbar’s number should be expanded.

But this means that social media has increased people’s cognitive abilities and information processing, as a recent study from the University of California, Berkeley, shows. According to Dunbar’s friends, many of our online friendships are so-called “weak bonds” with friends such as family members, work colleagues and friends of friends. Friendships are important for a happy and healthy life, but Dunbar’s number limits them to 150, and this is the number of friendships the average person believes he can successfully maintain. The evolutionary biologist from Oxford University believes 150 is as high as the human brain can process for friends because we know who a human is and how he behaves with other people. He was studying chimpanzees to understand why they groom each other when a new theory emerged linking the relationship between the brain and their social interactions with their grooming habits.


In 1992, British anthropologist Robin Dunbar suggested that the number of viable social relationships – relationships in which an individual knows who another person is and how that person relates to the other person – can be maintained for some people between 150 and 1,000. In his new book, which continues to explore the subject in its title “How many friends does a person need?,” we ask the legendary British ethnologist, who deals with the subject in his own words. Dunbar’s number, also known as rule 150, is the proposed cognitive limit to which meaningful relationships can be maintained. This number was popularized by the philosopher and sociologist John Dunbar in the late 19th and early 20th centuries.

In the 1990s, the British anthropologist Robert Dunbar suggested that individuals can only have meaningful relationships with a maximum of 150 people in their lives. Malcolm Gladwell highlighted this idea in his book “The Power of Numbers,” describing how one company, W.L. Gore & Associates, began to limit its capacity to 150 employees. They did so after noticing how buildings shared by more than 150 employees caused different social problems.

This cognitive boundary is based on the extrapolating results of a recent study by the University of California, the Center for Cognitive Neuroscience in Berkeley. The average Facebook friend per user is estimated at around 155,338, which is higher than Dunbar’s 150, but still comparatively low for the most active users. In dealing with a disturbing amount of data and the constant criticism of undermining intimacy and relationships, Facebook is getting more attention than it deserves. Dunbar’s number is a good indicator of how many people can be held in a stable social relationship. This series of figures is divided into two categories: 150 people, which is often cited as the most important number in terms of social interaction for people in a social network.

If you could only have 150 friends, “says Robin Dunbar (yes, I’m the guy),” you’d have to be able to connect with so many people that you could write your name on your face. Technically, this theoretical limit, which limits the number of social relationships that one can cultivate, anywhere between 100 and 230, applies to all, but we could not help but take them personally. According to Wikipedia, Dunbar’s figure is a “proposed cognitive limit on the number of people with whom one can have stable social relationships.

The concept popularized by anthropologist Robin Dunbar has long been interesting , and it has been argued that the number is almost double that of 150. However, the researchers have never agreed on the exact number, claiming it is between 150 and 250. The number varies, but it’s suspected, it is somewhere between 200 and 250, enough to keep relations going for at least a few years.

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