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The Effects of Risperidone and Olanzapine on Thinking

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ClinicalTrials.gov Identifier: NCT00108368
Recruitment Status : Completed
First Posted : April 15, 2005
Last Update Posted : January 21, 2009
Janssen, LP
Information provided by:
VA Office of Research and Development

Brief Summary:

The goal of this research is to find ways to maximize the benefits of antipsychotic medications for cognition.

Hypothesis: Risperidone and olanzapine will show greater benefits than conventional medications on assessments of social cognition, particularly affect perception and social perception.

Condition or disease Intervention/treatment Phase
Schizophrenia Psychotic Disorders Drug: Risperidone Drug: Olanzapine Phase 4

Study Type : Interventional  (Clinical Trial)
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: The Cognitive Effects of Risperidone and Olanzapine
Study Start Date : October 2003
Estimated Study Completion Date : March 2006

Resource links provided by the National Library of Medicine

U.S. FDA Resources

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosed with schizophrenia disorder by a DSM IV.
  • Competent to sign informed consent
  • No history of poor response to Risperdal and Zyprexa
  • No organic brain disease

Exclusion Criteria:

  • Mental retardation or any chronic medical illness which results in the patient not being appropriate for a switch to Risperdal or Zyprexa.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00108368

United States, California
VA Greater Los Angeles Healthcare System
Los Angeles, California, United States, 90073
Sponsors and Collaborators
VA Office of Research and Development
Janssen, LP

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
ClinicalTrials.gov Identifier: NCT00108368     History of Changes
Other Study ID Numbers: MHBS-057-00S
First Posted: April 15, 2005    Key Record Dates
Last Update Posted: January 21, 2009
Last Verified: September 2007

Keywords provided by VA Office of Research and Development:
antipsychotic medication
information processing
social cognition

Additional relevant MeSH terms:
Mental Disorders
Psychotic Disorders
Schizophrenia Spectrum and Other Psychotic Disorders
Serotonin Antagonists
Serotonin Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Antipsychotic Agents
Tranquilizing Agents
Central Nervous System Depressants
Psychotropic Drugs
Dopamine Antagonists
Dopamine Agents
Autonomic Agents
Peripheral Nervous System Agents
Gastrointestinal Agents
Serotonin Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators