Proof of Concept Study of Cognitive Improvement in Patients With Schizophrenia

Inclusion Criteria: * Diagnosis of schizophrenia * Outpatient at the time of screening and randomization * Stable housing defined as having a place to live in the community (ie, not in a hospital or nursing home) * Active cigarette smoking (10 or more cigarettes per day Exclusion Criteria: * Any significant psychiatric or neurological disease other than schizophrenia, or current diagnosis of major depressive disorder * Known or suspected drug or alcohol abuse within the 6 months or urine toxicology test positive for illegal or non-prescribed substances * Impaired vision and/or hearing making cognitive testing difficult