The study was discontinued prematurely on 25 February 2008 due to slow enrollment

This is a 10-week study with bifeprunox and placebo in elderly subjects with psychosis and behavioral disturbances associated with dementia of the alzheimer's type.

Inclusion Criteria:

• Diagnosis of dementia of the Alzheimer's type

Exclusion Criteria:

• History of seizure disorder
• Clinically significant electrocardiogram (ECG)
• Clinical or radiological evidence of stroke, vascular dementia or dementia due to substance abuse, or head trauma