Dr Peter Collett is a social psychologist. For many years he taught and conducted research studies at the Department of Experimental Psychology at Oxford University. He has co-authored two books, including Gestures: Their Origins and Distribution with Desmond Morris, and is the author of Foreign Bodies: A Guide to European Mannerisms. He has appeared in various television documentaries and is currently resident psychologist on the hugely popular Channel 4 series Big Brother. He lives with his family in Oxford.