title: Darwin and the ghost of Phineas Gage: neuro-evolution and the social brain.
authors: Robin I M
authors: RI
authors: Dunbar
mesh_terms: D000818:Animals; D005075:Biological Evolution; D001921:Brain / Q000033:anatomy & histology* / Q000502:physiology*; D003071:Cognition / Q000502:physiology; D006801:Humans; D009929:Organ Size; D011323:Primates; D012919:Social Behavior