Stephen Shennan is Professor of Theoretical Archaeology at the University College London Institute of Archaeology, where he was Director 2005-2014. His main interest is explaining stability and change in prehistory in the light of evolutionary ideas. He has published over 120 papers and books, including Quantifying Archaeology (2nd edition, 1997), Genes, Memes and Human History (2002), and Pattern and Process in Cultural Evolution (edited, 2009). He is a Fellow of the British Academy and a member of the Academia Europaea. He received the Rivers Medal of the Royal Anthropological Institute in 2010 and a Shanghai Archaeological Forum Research Award for his EUROEVOL project in 2015.