The study is to assess the performance characteristics of a new measure to assess onset of efficacy in a GAD patient population.

Inclusion Criteria:

• Primary Diagnosis of GAD (DSM IV, 300.02) as established by the clinician using all sources of data including the MINI structured interview
• HAM A score ³20 at the Screening (Study Day -7) and Baseline (Study Day 1) Visits by observer rating
• Good health as determined by medical history, physical examination, vital signs, electrocardiography (ECG), and clinical laboratory measurements
• Covi Anxiety Scale total score ³9 and Raskin Depression Scale total score £7 at the Screening Visit (to ensure predominance of anxiety symptoms over depression symptoms)
• Age 18 to 65 (inclusive)

Exclusion Criteria:

• Patients with most other current DSM-IV Axis I disorders.
• Patients with current or past schizophrenia, Psychotic disorder
• Delirium, dementia, amnestic, and other clinically significant cognitive disorders
• Bipolar or schizoaffective disorder
• Benzodiazepine abuse or dependence; and/or Factitious disorder.