Institution: | 1. Centre for Social Learning and Cognitive Evolution, School of Psychology and Neuroscience, University of St Andrews, St Andrews KY16 9JP, U.K.;2. Inkawu Vervet Project, Mawana Game Reserve, Swart Mfolozi, KwaZulu Natal, South Africa;3. Anthropological Institute and Museum, University of Zurich, Zurich, Switzerland |