Prolonged Exposure (PE) Therapy for Posttraumatic Stress Disorders is a cognitive-behavioral treatment program for adult men and women (ages 18-65+) who have experienced single or multiple/continuous traumas and have posttraumatic stress disorder (PTSD). The program consists of a course of individual therapy designed to help clients process traumatic events and reduce their PTSD symptoms as well as depression, anger, and general anxiety. PE has three components: (1) psychoeducation about common reactions to trauma and the cause of chronic posttrauma difficulties, (2) imaginal exposure (also called revisiting the trauma memory in imagination), repeated recounting of the traumatic memory, and (3) in vivo exposure, gradually approaching trauma reminders (e.g., situations, objects) that are feared and avoided despite being safe. Treatment is individualized and is conducted by social workers, psychologists, psychiatrists, and other therapists trained to use the PE manual, which specifies the agenda and treatment procedures for each session. Standard treatment consists of 8-15 sessions conducted once or twice weekly for 90 minutes each. The duration of treatment can be shortened or lengthened depending on the needs of the client and his or her rate of progress.