This comprehensive survey forms an account of behavioural, psychodynamic and humanistic approaches to the field of clinical psychology, and seeks to provide a solid grounding for those with an interest in the subject. The authors place emphasis on the research tradition in clinical psychology and stress the advantages of the scientist-practitioner model of preparation for the multitude of functions available to clinical psychologists. As a whole, this book gives an understanding of what the field involves and requires of those studying the area. Key features of the third edition include a new chapter on clinical child psychology, general revision and reorganization of the text and added material on diagnostic advances, research strategies, innovative treatments, specialized assessment instruments and developing professional issues.