 Aripiprazole Treatment After receiving the first scan, the schizophrenic subjects will be started on open label aripiprazole 15 mg po qd. Over the subsequent six weeks they will be titrated to a target dose of 30 mg po qd and maintained on this dose for the next six weeks. The aripiprazole titration schedule will be as follows: 15 mg Weeks 1-2, 20 mg Weeks 3-6, and then 30 mg. During the first six weeks of the treatment phase their prior antipsychotic will be gradually tapered down 75 of total daily dose in Week 1 and 2, 50 of total daily dose in Weeks 3 and 4, 25 of total daily dose in Week 5 and 6 and then discontinued. 