Treatment of Phonological Disorder: A Feasibility Study With Focus on Outcome Measures

American Journal of Speech-language Pathology
Ann Bosma SmitMelanie Hilgers

Abstract

In a feasibility study for a randomized controlled trial of treatments for phonological disorders conducted over a period of 8 months, we examined 6 clinically relevant outcome measures. We took steps to reduce error variance and to maximize systematic variance. Six children received traditional treatment (Van Riper, 1939), and 7 received expansion points (Smit, 2000), a treatment program with both phonological and traditional elements. Outcome measures, which were applied to both word list and conversational samples, included percentage of consonants correct (PCC; Shriberg & Kwiatkowski, 1982), PCC for late and/or difficult (L/D) consonants and number of L/D consonants acquired. In repeated-measures analyses of variance, all measures showed significant differences from pretreatment to posttreatment, and the word list measures were associated with very high power values. In analyses of covariance for between-groups contrasts, the adjusted expansion points mean exceeded the adjusted traditional treatment mean for every measure; however, no differences reached significance. For the L/D PCC (conversation) measure, the contrast between groups was associated with a large effect size. We recommend that practitioners use outcome measu...Continue Reading

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Citations

Sep 26, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Françoise Brosseau-LapréKeith R Kluender
Jan 9, 2021·Journal of Communication Disorders·Klaire Mann Brumbaugh, Ann Bosma Smit
Jun 12, 2021·Clinical Linguistics & Phonetics·Philip CombithsJ A Barlow
Oct 5, 2021·Clinical Linguistics & Phonetics·Eleanor Sugden, Joanne Cleland
Nov 4, 2021·Seminars in Speech and Language·Klaire M Brumbaugh, Ashley Gibson

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