CAADID™

The interview is divided into Part I and Part II, which are administered separately. Each part requires approximately 90 minutes to complete. The tool is completed using a paper-and-pencil format.

Part I is the Patient History Questionnaire, which can be administered as a clinical interview or self-report questionnaire. It contains questions about demographic history of the client, the developmental course of the client's attention problems, associated risk factors, and comorbidity questions.

Part II, the Diagnostic Criteria Interview, is presented in interview format. The clinician uses the information obtained in Part I to assess against DSM-IV criteria for ADHD. Information is also gathered on age of onset, pervasiveness, and level of impairment for any ADHD symptom that is indicated.

Normative data for the self-report forms consist of 1,026 nonclinical adults, while the observer forms consist of friends of 943 nonclinical adults. Separate norms are available by gender and age-group intervals (18-29, 30-39, 40-49, 50+ years).