From this point on, public and private insurers' demands that providers demonstrate cost-effectiveness require that clinicians, managers, and policy makers become conversant with the melded concepts and lexicons of this new evaluative perspective. Until now this familiarization process has been hampered by the lack of a literature that brings these concepts together in a cogent manner accessible to all the relevant disciplines and actors. In Cost-Outcome Methods for Mental Health, Hargreaves,Shumway,Hu, and Cuffel, a multidisciplinary group whose members have been among the pioneers in mental health cost and outcome research, make a solid contribution toward filling this gap.