In the half century that has passed since George Kelly put forward his psychology of personal constructs, there have been major advances in the form of psychotherapy derived from his theory. This book presents developments in the personal construct theory perspective on psychological disorders and their treatment in the context of contemporary issues in psychotherapy; illustrates the diverse range of personal construct psychotherapy approaches that have been devised for a wide range of clinical problems; and indicates the growing evidence base for these approaches. It contains contributions from most of the leading international practitioners in the field. It will not only be of interest to psychotherapists, other clinicians, academics, and students who are already familiar with personal construct theory or constructivism, but also to those who are seeking a therapeutic approach which is integrative but has a clear theoretical rationale, and which is able to combine humanism with rigour.