Phonological Disorders III A Procedure for Assessing Severity of Involvement Reports
Reports  |   August 01, 1982
Phonological Disorders III
 
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Article Information
Reports   |   August 01, 1982
Phonological Disorders III
Journal of Speech and Hearing Disorders, August 1982, Vol. 47, 256-270. doi:10.1044/jshd.4703.256
History: Received January 23, 1981 , Accepted October 13, 1981
 
Journal of Speech and Hearing Disorders, August 1982, Vol. 47, 256-270. doi:10.1044/jshd.4703.256
History: Received January 23, 1981; Accepted October 13, 1981

Data are presented to support the reliability, validity, and utility of a severity metric for phonological disorders. The metric, percentage of consonants correct (PCC), is readily derived from a continuous speech sample. PCC values are shown to reflect an ordinal severity scale that embraces the constructs of disability, intelligibility, and handicap. PCC values index four levels of "severity of involvement": Mild, mild-moderate, moderate-severe, and severe. The metric provides a means by which instructors, researchers, and speech-language pathologists working in different settings can specify subject descriptions, gauge the effects of intervention programs, and undertake cross-institutional projects. The metric is used as one component of a diagnostic classification system for phonological disorders (Shriberg & Kwiatkowski, 1982a) and within a framework for management of persons with phonological disorders (Shriberg & Kwiatkowski, 1982b), the first and second papers in this series.

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