John Monahan, M.D., will give the Guttmacher Award lecture, presenting the MacArthur Study of Mental Disorders and Violence. Lenore Terr, M.D., will give the Marmor Award lecture on "Terror, Horror, and Fright: Past and Current Perspectives." Philip Zimbardo, M.D., will talk about "Evil in the World and Terror in Our Nation," and Samuel Klagsbrun, M.D., will present a forum on evil. Elio Frattaroli, M.D., will discuss the meaning of psychiatry after September 11. Randall Marshall, M.D., will present the mental health community response to the disaster in New York City, and Frederic Kass, M.D., will talk about the innovative collaboration between Columbia University (and the many New York City mental health professionals who volunteered to participate in this program) and the New York Police Department. Jerrold Post, M.D., will share his clinical expertise in a forum titled "Killing in the Name of God: Osama bin Laden and Radical Islam."