Robert Barton is a hybrid evolutionary biologist/anthropologist/psychologist interested in brains, behaviour and cognition. He uses phylogenetic comparative methods to study how these traits evolved. He developed and tested the ‘Visual brain hypothesis’ for primate brain size evolution and is currently interested in the underestimated role of the cerebellum in brain evolution and cognition. He is a Professor of Evolutionary Anthropology and co-Director of the Institute of Advanced Study at Durham University.