Four patients were recruited from New York Presbyterian Hospital, Weill Medical College, Payne Whitney Clinic (Manhattan Campus), outpatient psychiatric program. Patients were randomly assigned to a length of baseline before beginning the 8-week ACT treatment. There was be a five-week baseline period for all patients after which two patients will be introduced to ACT treatment in weekly increments. All patients received treatment as usual throughout baseline and ACT treatment. During baseline, patients were assessed by an independent rater every week and during ACT treatment, patients were assessed every other week and at a one-month follow-up. Each participant's assessment results were compared over time, so that there will be an established baseline level of functioning which will be compared to his or her level of functioning during treatment, at the end of treatment, and finally at the one-month follow-up. Hypotheses: It was hypothesized that patients' distress, anxiety and tension due to delusional thinking would decrease over time when comparing baseline to treatment, treatment to outcome, and then outcome to follow-up. Additionally, the number of delusional thoughts and the rate of re-hospitalization was hypothesized to decrease over time.
