Arnold Goldberg, M.D., is the Cynthia Oudejan Harris, M.D. Professor, Department of Psychiatry, Rush Medical College in Chicago, and Training and Supervising Analyst, Institute for Psychoanalysis, Chicago. He is the author of a number of books, including Being of Two Minds: The Vertical Split in Psychoanalysis (TAP, 1999) and Errant Selves: A Casebook of Misbehavior (TAP, 2000).