Margot Waddell, PhD(Cantab), MACP, MBPAS is a psychoanalyst and consultant child psychotherapist in the Adolescent Department of the Tavistock Clinic. She has written extensively on adolescence, including on groups, gangs and scapegoating, and is author of Inside Lives: Psychoanalysis and the Growth of Personality (1998). Margot Waddell lives in London.