a) Psychoses within the past 5 years. b) Suicidal ideation occurring within 2 years prior to enrollment. Not excluded: A participant with a remote history (greater than 3 years) of a suicide attempt or suicide gesture is not excluded if the investigator finds the participant (a) to be of sound mental health; and (b) the suicide attempt was a well-defined, isolated event; and (c) the cause or inciting factor(s) no longer has relevance to the individual. A participant currently in therapy, due to a suicide attempt or gesture, or suicidal ideation, may be enrolled only when the participant's current therapist or health care provider provides documentation that the participant currently is not suicidal.