Measurement and Classification of Psychiatric Symptoms: An Instruction Manual for the PSE and Catego ProgramThis book was published in 1974 as a guide to a method of partially standardising the assessment of a subject's mental state with the object of achieving greater comparability between different examiners. The basis of the technique is a glossary of definitions of symptoms which is firmly grounded in the European school of psychiatry, with its long tradition of clinical observation and emphasis on the importance of listening to the a patient's