A 32-year-old female patient visits the clinic for evaluation of her excessive worries and concern over various aspects of her daily life. She reports feeling restless, fatigued, and often easily fatigued. Upon assessment, the nurse notes that these symptoms began to interfere with her work and personal relationships. The patient's family history reveals a genetic predisposition to anxiety disorders. Considering the symptoms and background information, which of the following assessments would be most appropriate for identifying the nature of her anxiety disorder?