Neil Mercer is Emeritus Professor of Education at the University of Cambridge, where he is also the Director of Oracy Cambridge: the Hughes Hall Centre for Effective Spoken Communication and a Life Fellow of the college Hughes Hall. He is a psychologist with particular interests in the use of talk for thinking collectively, the development of children’s spoken language abilities, and the role of teachers in that development. He has worked extensively and internationally with teachers, researchers and educational policy makers.