Roz Dixon is Senior Lecturer in Psychology and Assistant Dean in the School of Science, Birkbeck College, University of London. She has over 25 years' experience of working in the voluntary sector, the NHS and higher education, as a counsellor, patient advocate, campaigner, programme director and manager, and has written a number of articles on bullying. Peter K. Smith is Professor of Psychology and Head of the Unit for School and Family Studies at Goldsmiths College, University of London. He is the editor of Violence in Schools: The Response in Europe (2003) and co-editor of several other books on bullying in schools, including Bullying in Schools: How Successful Can Interventions Be? (2004) and Bullying in the Global Village (2011).