A Comparison of Phonological Severity Measures

Abstract
The severity of phonological involvement of 20 phonologically impaired children was compared using five measures: phonological deviancy score (PDS), percent consonants correct (PCC) based on connected speech and based on single words, and perceptual ratings from two groups of listeners (elementary education majors, and graduate students in speech-language pathology). All five measures were highly intercorrelated. Both PDS and PCC appear to have clinical utility as objective indicators of severity. PCC based on a standard word list correlated with listener ratings of severity just as well as PCC based on spontaneous connected speech.
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