Development, reliability and acceptability of a new version of the DSM-IV Social and Occupational Functioning Assessment Scale (SOFAS) to assess routine social functioning

Acta Psychiatr Scand. 2000 Apr;101(4):323-9.


Objective: Development of a scale to assess patients' social functioning, the Personal and Social Performance scale (PSP).

Method: PSP has been developed through focus groups and reliability studies on the basis of the social functioning component of the DSM-IV Social and Occupational Functioning Assessment Scale (SOFAS). The last reliability study was carried out by 39 workers with different professional roles on a sample of 61 psychiatric patients admitted to the rehabilitation unit. Each patient was rated independently on the scale by the two workers who knew them best.

Results: The PSP is a 100-point single-item rating scale, subdivided into 10 equal intervals. The ratings are based mainly on the assessment of patient's functioning in four main areas: 1) socially useful activities; 2) personal and social relationships; 3) self-care; and 4) disturbing and aggressive behaviours. Operational criteria to rate the levels of disabilities have been defined for the above-mentioned areas. Excellent inter-rater reliability was also obtained in less educated workers.

Conclusion: Compared to SOFAS, PSP has better face validity and psychometric properties. It was found to be an acceptable, quick and valid measure of patients' personal and social functioning.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Diagnosis, Computer-Assisted
  • Female
  • Humans
  • Male
  • Mental Disorders / diagnosis*
  • Mental Disorders / psychology
  • Middle Aged
  • Occupational Health*
  • Psychiatric Status Rating Scales*
  • Reproducibility of Results
  • Socialization*