"Psychodynamic psychiatry is an approach to diagnosis and treatment characterized by a way of thinking about both patient and clinician," writes Dr. Gabbard, "that includes unconscious conflict, deficits and distortions of intrapsychic structures, and internal object relations and that integrates these elements with contemporary findings from the neurosciences" (p. 4). Dr. Gabbard goes on to describe, in quick succession, the work of Freud, the unconscious, and the topographic model of the mind; the Nobel-prize-winning work of Eric Kandel with the marine snail Aplysia californica; preliminary evidence that in lower species (crayfish) social clues in the environment influence how the neurotransmitter serotonin affects the organism; recent findings in Finland that psychodynamic therapy may have a significant impact on serotonin metabolism; the work of psychoanalysts Melanie Klein, Otto Kernberg, and Heinz Kohut; and the infant developmental theories of Margaret Mahler and Daniel Stern (no relation to this reviewer).