We seek to throw down the gauntlet with this handbook, challenging the he gemony of the "behavioral medicine" approach to the psychological study and treatment of the physically ill. This volume is not another in that growing surfeit oftexts that pledge allegiance to the doctrinaire purity of behavioristic thinking, or conceptualize their subject in accord with the sterility of medical models. Diseases are not our focus, nor is the narrow band of behavioral assessment and therapy methodologies. Rather, we have sought to redefine this amorphous, yet burgeoning field so as to place it squarely within the province of a broadly-based psychology-specifically, the emerging, substantive discipline of health psy chology and the well-established professionalism and diverse technologies of clinical psychology. The handbook's title-Clinical Health Psychology-reflects this reorientation explicitly, and Chapter 1 addresses its themes and provides its justifications more fully. In the process of developing a relevant and comprehensive health assess ment tool, the editors were struck by the failure of clinical psychologists to avail themselves of the rich vein of materials that comprise the psychosocial world of the physically ill. Perhaps more dismaying was the observation that this field was being mined-less than optimally-by physicians and nonclinical psychologists."