Robin Dunbar

Robin Dunbar is an emeritus professor of evolutionary psychology in the Department of Experimental Psychology at the University of Oxford. His research is concerned with trying to understand the behavioral, cognitive and neuroendocrinological mechanisms that underpin social bonding in primates (in general) and humans (in particular).

Dunbar number in graphic form

Robin Dunbar Explains Why His ‘Number’ Still Counts

Exactly 30 years ago, Robin Dunbar was pondering a graph of primate group sizes plotted against the size of their brains: the larger the brain, the larger the group size. I was curious to know what group size this relationship might predict for humans. The number his calculations gave was 150.

2 years ago