At the end of the 20th century, Dunbar theorized that the human brain could maintain stable social relationships with no more than 150 people. Dunbar arrived at the number after comparing ...

But does Dunbar's theory hold up ... and who might share food with us. 150 is the predicted number of people we can consistently track and have up-to-date information about." ...

The notion of Dunbar's number, that cognitive ceiling estimated at around 150 stable relationships that a human being can ...

Researchers at ARO and the University of North Texas tested a theory proposed by British anthropologist Robin Dunbar in the 1990s, which suggested that 150 was the largest group that humans can ...