Intensive clinical work by child psychotherapists at the Tavistock Clinic in London has resulted in developments in the understanding of children and adolescents suffering from psychotic levels of disturbance. This work describes these developments in treating children who are manifestly troubled in their behaviour, relationships, and capacity for communication. The book is part of a series of books published by the Tavistock Clinic. The work of the clinic is based on the application of psychoanalytic and systemic ideas to understanding human growth and psychological development, and group and social processes both within the family and wider society.