Originally published in 1987, this book reviews the state of evaluative research of mental health programmes at the time, showing how practices can be evaluated and hence improved. A multidisciplinary group of authors, covering psychiatry, clinical psychology, psychiatric nursing, social work and other ‘therapies’, describe previous studies and applications in each discipline, before detailing a case study of their own evaluative work. The book will still have something to offer all professionals concerned with improving the quality of their work in the mental health area.