Originally published in 1992, Borderline presents a unique study of the disturbed mind. Professional psychologist Peter Chadwick draws upon his own personal experience of madness to provide a valuable exploration of the psychology of paranoia and schizophrenia.The book goes beyond a narrowly focused analytical approach to examine schizophrenia from as many perspectives as possible. Using participant observation, introspection, case study and experimental methods, Chadwick shows how paranoid and delusional thinking are only exaggerations of processes to be found in normal cognition. Impressed by the similarities between the thinking of mystics and psychotics, he argues that some forms of madness are closely related to profound mystical experience and intuition, but that these are expressed in a distorted form in the psychotic mind. He explores the many positive characteristics and capabilities of paranoid patients, providing a sympathetic account which balances the heavily negative constructions usually put on paranoia in the research literature.Borderline provides many novel insights into madness and raises important questions as to how psychosis and psychotics are to be evaluated. It will be essential reading for all practising professionals and students in clinical psychology and psychiatry, and for everyone involved in the treatment, understanding and management of schizophrenia.