John Archer is Professor of Psychology at the University of Central Lancashire. His research interests are aggression, violence, sex and gender, and grief. He is the author of a number of books, including The Nature of Grief (1999), Ethology and Human Development (1992) and The Behavioural Biology of Aggression (1988). He is a Fellow of the British Psychological Society and President-Elect of the International Society for Research on Aggression.

Barbara B. Lloyd is a Senior Research Fellow in the School of Social Sciences at the University of Sussex where she was previously Reader in Social Psychology. Barbara has an active psychoanalytic psychotherapy practice and was a founding member and Chair of the Brighton Association of Analytic Psychotherapists. Barbara is the author of a number of books including Social Representations and the Development of Knowledge (Cambridge, 1990) and Gender Identities and Education. The Impact of Starting School (1992) with Gerard Duveen. She also published Smoking in Adolescence: Images and Identities (with Kevin Lucas, 1998) which describes her current research. She is a Fellow of the British Psychological Society and a Full Member of the British Association of Psychotherapists.