Lead Sponsor

Forest Laboratories

Age

18 - 65 years

Sex

ALL

Healthy Volunteers

No

•Male and female inpatients, 18-65 years of age, meeting DSM-IV-TR criteria for schizophrenia and having a Total Positive and Negative Syndrome Scale (PANSS) Score \>=80 and \<=120. A score \>=4 on item P1 (delusions) or P3 (hallucinatory behavior) and a score of \>=4 on item P2 (conceptual disorganization) or P6 (suspiciousness/persecution) of the PNASS

•Patients with documented disease of the central nervous system that can interfere with the trial assessments, including but not limited to stroke, tumor, Parkinson's, organic brain disease, seizure disorder (except for febrile convulsions during infancy), chronic infection, or neurosyphilis; or patients who have suffered a traumatic brain injury resulting in significant impairment