Positive and Negative Syndrome Scale (PANSS), Clinical Global Impressions (CGI), and Adverse effect/side effects assessment will be administered at baseline and then monthly. A Cognitive Battery will be administered at baseline, three months, and six months consisting of the California Verbal Learning Test; Trail making A&B; Purdue Pegboard; Digit Symbol Coding; Continuous performance test ; Reaction Time performance Test and Wisconsin Card Sort Test.