According to Dunbar (1992) the predicted group size of humans (based on an extrapolation from other primates) is:

Question

Quizplus · Accepted Answer

Dunbar's number, as it is commonly known, is 150. This refers to the suggested cognitive limit on the number of people with whom one can maintain stable social relationships. This number has been observed across various cultures and can be explained by the size of the neocortex in the brain.

According to Dunbar (1992) the Predicted Group Size of Humans