OTTO F. KERNBERG, M.D., is director of the Personality Disorders Institute at New York-Presbyterian Hospital; professor of psychiatry at Cornell University Medical College; and training and supervising analyst at the Columbia University Center for Psychoanalytic Training and Research. He is also the author of Ideology, Conflict, and Leadership in Groups and Organizations; Aggression in Personality Disorders and Perversions; Love Relations: Normality and Pathology; and Severe Personality Disorders, all published by Yale University Press.