SCAN is a set of instruments and manuals aimed at assessing, measuring and classifying psychopathology and behaviour associated with the major psychiatric disorders in adult life. It can be used for clinical, research- and training purposes and was developed within the framework of the World Health Organization.SCAN has a bottom-up approach where no diagnosis-driven frames are applied in grouping the symptoms. Each symptom is assessed in its own right. It has a proven stability and robustness to differentialy assess psychotic and neurotic states. It covers disorders like:


    1 Somatoform disorders
    2 Anxiety disorders
    3 Mood disorders (depression, bipolar)
    4 Obsessive Compulsive Disorder
    5 Problems associated with appetite and sleep
    6 Eating disorders
    7 Psychosis (e.g. schizophrenia)
    8 Organic disorders
    9 Substance abuse (alcohol, drugs)
    10 Observation sections (e.g. affect, speech)


Reference manual
The book “Diagnosis and clinical measurement in psychiatry, a reference manual for SCAN/PSE-10>” was published by Cambridge University Press. Find more details below.

Edited by

J. K. Wing, Royal College of Psychiatrists
N. Sartorius, University of Geneva
T.B. Üstün, World Health Organisation


In order to help people with a mental illness it is important to be able to understand and measure the severity of the experiences that they find distressing and disabling and which can affect their behaviour. SCAN is a form of interview, found acceptable to patients, which provides a detailed and accurate picture of mental state. When analysed by computer it provides a diagnosis that is comparable wherever the system is used. The 9th edition of the Present State Examination (PSE-9) was published in 1974 and served to link the two main approaches to the description and classification of psychological problems. PSE-10/SCAN builds on the experience of extensive tests using PSE-9. It retains the main features of PSE-9 and links together the latest two international classification systems – ICD-10 and DSM-IV. This reference manual is a companion to the SCAN interview schedule and software. It describes the rationale and development of the system and provides a valuable introduction to its uses.

Chapter Contents

1. Measurement and classification in psychiatry J. K. Wing, N. Sartorius and T. B. Ustun
2. The PSE tradition and its continuation J. K. Wing
3. The aims and structure of SCAN J. K. Wing
4. The SCAN glossary and principles of the interview J. K. Wing
5. SCAN translation N. Sartorius
6. Technical procedures T. B. Ustun and W. Compton III
7. Training in the use of SCAN T. B. Ustun, G. L. Harrison and B. Chatterjee
8. International field trials: SCAN-0 J. K. Wing, N. Sartorius and G. Der
9. SCAN-1: Algorithms and CAPSE-1 G. Der, G. Glover, T. S. Brugha and J. K. Wing
10. Development of SCAN-2 T. S. Brugha
11. Computerisation of SCAN-2: CAPSE-2 A. Y. Tien, S. Chaterjee, T. B. Ustun and E. Girou
12. Clinical, educational and scientific uses J. K. Wing, N. Sartorius and T. B. Ustun


Sample chapters from the SCAN glossary/interview


Cambridge University Press, ISBN: 0 521 43477 7

Schedules for Clinical Assessment in Neuropsychiatry