Institution: | 1. Department of Ecology and Evolution, University of Lausanne, 1015 Lausanne, Switzerland;2. Inkawu Vervet Project, Swart Mfolozi, PO Box 84, KwaZulu Natal, 3115, South Africa;3. Centre for Social Learning & Cognitive Evolution, School of Psychology and Neuroscience, University of St Andrews, St Andrews Fife, KY169JU, UK;4. Anthropological Institute and Museum, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland |