Received Jan. 8, 1999; revision received May 12, 1999; accepted June 17, 1999. From the Department of Psychology and the Department of Psychiatry, the University of Minnesota, Minneapolis. Address reprint requests to Dr. Keel, 1102 William James Hall, Harvard University, 33 Kirkland St., Cambridge, MA 02138; firstname.lastname@example.org (e-mail). Supported in part by a McKnight grant for eating disorders research, Obesity Center grant DK-50456 from the National Institute of Diabetes and Digestive and Kidney Diseases, NIMH research training grant MH-17069, and dissertation grants from the American Psychological Association, the Minnesota Women Psychologists’ Association, and the University of Minnesota. The authors thank K. Ball, M. Biaocchi, R. Crosby, E. Eckert, S. Engbloom, D. Glotter, G. Goff, J. Harper, D. Hatsukami, G. Leon, C. Peterson, C. Pomeroy, R. Pyle, J. Rodefer, and R. Zimmerman for their help.