Psychoanalysis and dynamic psychotherapy have been criticized as too time-consuming, costly and even ineffective. Dr. Raymond Levy and Dr. Stewart Ablon, of the Psychotherapy Research Program at Massachusetts General Hospital, discuss their recent evidence-based research into these long-term therapies. What differentiates psychoanalysis and dynamic psychotherapy from other types of therapy, and are these therapies more effective for specific disorders? Dr. Lee Freedman hosts.