- Participants with history or current diagnosis of the following Diagnostic and Statistical Manual of Mental Disorders (DSM-5) psychiatric illness: organic mental disorder, schizophrenia, schizoaffective disorder, delusional disorder, psychotic disorder not otherwise specific, bipolar disorder, substance dependence, substance abuse (< 1 year) (subjects with co-occurring post-traumatic stress disorder and related disorders are eligible for participation) as diagnosed through medical history