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Psychological medicine · Jul 1999
Scales to measure dimensions of hallucinations and delusions: the psychotic symptom rating scales (PSYRATS).
- G Haddock, J McCarron, N Tarrier, and E B Faragher.
- Department of Clinical Psychology, University of Manchester, Withington Hospital.
- Psychol Med. 1999 Jul 1; 29 (4): 879-89.
BackgroundScales to measure the severity of different dimensions of auditory hallucinations and delusions are few. Biochemical and psychological treatments target dimensions of symptoms and valid and reliable measures are necessary to measure these.MethodThe inter-rater reliability and validity of the Psychotic Symptom Rating Scales (PSYRATS: auditory hallucination subscale and delusions subscale), which measure several dimensions of auditory hallucinations and delusions were examined in this study.ResultsThe two scales were found to have excellent inter-rater reliability. Their validity as compared with the KGV scale (Krawiecka et al. 1977) was explored.ConclusionsIt is concluded that the PSYRATS are useful assessment instruments and can complement existing measures.
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