Abstract

Classification systems such as diagnosis have two primary properties, reliability and validity. Reliability refers to the consistency with which subjects are classified; validity, to the utility of the system for its various purposes. In the case of psychiatric diagnosis, the purposes of the classification system are communication about clinical features, aetiology, course of illness and treatment. A necessary constraint on the validity of a system is its reliability. There is no guarantee that a reliable system is valid, but assuredly an unreliable system must be invalid.

Keywords

Reliability (semiconductor)Consistency (knowledge bases)Constraint (computer-aided design)PsychologyReliability engineeringPsychiatryComputer scienceArtificial intelligenceMathematicsEngineering

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Publication Info

Year
1974
Type
article
Volume
125
Issue
587
Pages
341-347
Citations
609
Access
Closed

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Robert L. Spitzer, Joseph L. Fleiss (1974). A Re-analysis of the Reliability of Psychiatric Diagnosis. The British Journal of Psychiatry , 125 (587) , 341-347. https://doi.org/10.1192/bjp.125.4.341

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DOI
10.1192/bjp.125.4.341