title: Brain evolution: when is a group not a group?
abstract: In testing the 'social brain hypothesis' with comparative data, most research has used group size as an index of cognitive challenge. Recent work suggests that this measure is too crude to apply to a wide range of species, and biologists may need to develop other ways of extending these analyses.
authors.affiliation: Scottish Primate Research Group, School of Psychology, University of St Andrews, Fife KY16 9JP, Scotland. rwb@st-andrews.ac.uk
authors.forename: Richard W
authors.initials: RW
authors.lastname: Byrne
authors.forename: Lucy A
authors.initials: LA
authors.lastname: Bates
mesh_terms: D000818:Animals; D005075:Biological Evolution; D001921:Brain / Q000033:anatomy & histology* / Q000502:physiology; D008322:Mammals / Q000033:anatomy & histology / Q000502:physiology; D010527:Perissodactyla / Q000033:anatomy & histology / Q000502:physiology; D011323:Primates / Q000033:anatomy & histology / Q000502:physiology; D012919:Social Behavior; D013045:Species Specificity