1-A 21-year-old man is brought to the emergency department by the police after he was found sitting in the middle of traffic on a busy street. By way of explanation, the patient states, “The voices told me to do it.” The patient says that for the past year he has felt that “people are not who they say they are.” He began to isolate himself in his room and dropped out of school. He claims that he hears voices telling him to do “bad things.” There are often two or three voices talking, and they often comment to each other on his behavior. He denies that he currently uses drugs or alcohol, although he reports that he occasionally smoked marijuana in the past. He says that he has discontinued this practice over the past 6 months because he can no longer afford it, and claims that marijuana helped with the voices. He denies any medical problems and is taking no medication.