“In this newly published ultra-short book he presents an attractive line-up of easy-to-use scales and questionnaires to aid the diagnosis of mental disorders and monitoring of symptoms in treatment. … The book presents validated rating scales and questionnaires that are brief and easy to administer. So if you are a busy clinician, a clinical researcher or just looking for better ways to monitor the effects of your treatment, Per Bech’s book may indeed help you.” (Niels Okkels and Erik Roj Larsen, Acta Psychiatrica Scandinavica, Vol. 136, 2017)