A Study to Assess Learning Performance in Patients With Schizophrenia and Young and Elderly Healthy Volunteers

Inclusion Criteria: * Group 1 (patients with schizophrenia): * Be a man or woman between 18 and 55 years of age, inclusive * Has a known history of schizophrenia of at least 12 months by the referring psychiatrist * Receives stable antipsychotic drug therapy (maximally 2) for at least 6 weeks prior to screening * Medically stable on the basis of clinical judgment by the investigator * Group 2 (young healthy volunteers): be a healthy man or woman between 18 and 55 years of age, inclusive * Group 3 (elderly healthy volunteers): be a healthy man or woman between 65 and 85 years of age, inclusive * All participants (Group 1 to 3) must be capable of completing the cognitive test battery Exclusion Criteria: * Receives treatment with benzodiazepines, tricyclic antidepressant or anticholinergics * Has a positive urine screen for drugs of abuse or alcohol breath test * Has a recent history (within previous 6 months) of alcohol or drug abuse * Has psychological and/or emotional problems, which would render the informed consent invalid, or limit the ability of the participant to comply with the study requirements * Has any condition that, in the opinion of the investigator, would compromise the wellbeing of the participant or the study or prevent the participant from meeting or performing study requirements * Group 1 only: a diagnosis of substance dependence within 3 months prior to screening evaluation (patient with a positive drug screen at screening may be included provided use does not lead to a diagnosis of substance dependence and patient consents to abstain from illegal drugs at any time during the study)