Peter Blatchford is Emeritus Professor in Psychology and Education at the UCL Institute of Education. He is also Honorary Professor at the Education University of Hong Kong. His main area of interest is social developmental processes in school settings. He has published 18 books and over 100 peer reviewed papers and book chapters. Research projects he has directed include those on class size differences; the deployment and impact of Teaching Assistants; group work in classrooms; and social life in schools (including peer relations and school breaktimes). Funders include ESRC, Government and Charitable Trusts including Nuffield, Leverhulme, Esmee Fairbairn and Spencer.