Identification and Remediation of Phonological and Motor Errors in Acquired Sound Production Impairment.

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Bibliographic Details
Title:	Identification and Remediation of Phonological and Motor Errors in Acquired Sound Production Impairment.
Authors:	Buchwald, Adam¹ buchwald@nyu.edu, Gagnon, Bernadine², Miozzo, Michele^3,4
Source:	Journal of Speech, Language & Hearing Research. 2017 Supplement, Vol. 60, p1726-1738. 13p. 1 Chart, 2 Graphs.
Subject Terms:	Motor ability, Speech therapy, Phonology, Repetition (Learning process), *Errors, Speech disorder diagnosis, Accuracy, Diagnosis
Abstract:	Purpose: This study aimed to test whether an approach to distinguishing errors arising in phonological processing from those arising in motor planning also predicts the extent to which repetition-based training can lead to improved production of difficult sound sequences. Method: Four individuals with acquired speech production impairment who produced consonant cluster errors involving deletion were examined using a repetition task. We compared the acoustic details of productions with deletion errors in target consonant clusters to singleton consonants. Changes in accuracy over the course of the study were also compared. Results: Two individuals produced deletion errors consistent with a phonological locus of the errors, and 2 individuals produced errors consistent with a motoric locus of the errors. The 2 individuals who made phonologically driven errors showed no change in performance on a repetition training task, whereas the 2 individuals with motoric errors improved in their production of both trained and untrained items. Conclusions: The results extend previous findings about a metric for identifying the source of sound production errors in individuals with both apraxia of speech and aphasia. In particular, this work may provide a tool for identifying predominant error types in individuals with complex deficits. [ABSTRACT FROM AUTHOR]
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Database:	Education Research Complete

Description
Abstract:	Purpose: This study aimed to test whether an approach to distinguishing errors arising in phonological processing from those arising in motor planning also predicts the extent to which repetition-based training can lead to improved production of difficult sound sequences. Method: Four individuals with acquired speech production impairment who produced consonant cluster errors involving deletion were examined using a repetition task. We compared the acoustic details of productions with deletion errors in target consonant clusters to singleton consonants. Changes in accuracy over the course of the study were also compared. Results: Two individuals produced deletion errors consistent with a phonological locus of the errors, and 2 individuals produced errors consistent with a motoric locus of the errors. The 2 individuals who made phonologically driven errors showed no change in performance on a repetition training task, whereas the 2 individuals with motoric errors improved in their production of both trained and untrained items. Conclusions: The results extend previous findings about a metric for identifying the source of sound production errors in individuals with both apraxia of speech and aphasia. In particular, this work may provide a tool for identifying predominant error types in individuals with complex deficits. [ABSTRACT FROM AUTHOR]
ISSN:	10924388
DOI:	10.1044/2017_JSLHR-S-16-0240