A large number of psychiatric tests, scales, and forms have been created over the years to help in diagnosing mental illness and assisting in treatment and follow-up. We've put many of the clinical scales online here, hoping healthcare professionals—whether in specialty practices, primary-care settings, or emergency services—will find this format convenient. Since most of the tools are designed for repeated use over time, they will provide not only a longitudinal view but also document the medical record. In addition to the psychiatric clinical scales themselves, you will find instructions on how to administer and score the scales. These scales have demonstrated high levels of accuracy and validity and the results can give important clues to possible mental disorders that warrant follow up. However, please remember that they depend on the skills of the clinicians administering them and the accuracy of the information provided by the patients. Jay M. Pomerantz, MD
Assistant Clinical Professor of Psychiatry
Harvard Medical School, Boston | 
