Humans have the highest encephalization quotient (EQ) on the planet. (discovermagazine.com)
[ii] Compared to our primate cousins, humans have a much smaller gut and yet characteristically larger brains (i.e. a higher encephalization quotient). (foodasmedicine.ca)
Comparative analysis of encephalization in mammals reveals relaxed constraints on anthropoid primate and cetacean brain scaling. (nature.com)