In studies of social intelligence in primates, group size alone has not been shown to be strongly correlated with brain size; however, Dunbar did find a positive correlation between _____ and relative brain size.
A) grooming
B) hunting
C) mating
D) playing

Question

Quizplus · Accepted Answer

Dunbar's research showed that grooming behavior was positively correlated with relative brain size in primates. This suggests that the complexity of social relationships and the ability to maintain them may have played a role in the evolution of larger brains in these species. There is not strong evidence to link brain size specifically to hunting, mating, or playing behavior in primates.

In Studies of Social Intelligence in Primates, Group Size Alone