Model-driven treatment of childhood apraxia of speech : positive effects of the speech motor learning approach

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dc.contributor.author Van der Merwe, Anita
dc.contributor.author Steyn, Mollie
dc.date.accessioned 2018-02-23T09:20:12Z
dc.date.available 2018-02-23T09:20:12Z
dc.date.issued 2018-02
dc.description Supplemental File 1. Overview of a Speech Motor Learning (SML) program. en_ZA
dc.description Supplemental File 2. Analysis of the Participant's Phonetic Repertoire. en_ZA
dc.description Supplemental File 3. Examples of treatment stimuli implemented in the current study. en_ZA
dc.description.abstract PURPOSE : The aim of the study was to propose the speech motor learning approach (Van der Merwe, 2011) as a treatment for childhood apraxia of speech and to determine if it will effect positive change in the ability of a 33-month-old child to produce untreated nonwords and words containing treated age-appropriate consonants (Set 1 sounds), untreated age-appropriate consonants (Set 2), and untreated age-inappropriate consonants (Set 3) and also to determine the nature and number of segmental speech errors before and after treatment. METHOD : An A-B design with multiple target measures and follow-up was implemented to assess the effects of treatment of Set 1. Effect sizes for whole-word accuracy were determined, and two criterion lines were generated following the conservative dual criterion method. Speech errors were judged perceptually. RESULTS : Conservative dual criterion analyses indicated no reliable treatment effect due to rising baseline scores. Effect sizes showed significant improvement in whole-word accuracy of untreated nonwords and real words containing age-appropriate treated sounds and real words containing age-appropriate untreated sounds. The number of errors for all three sound sets declined. Sound distortion was the most frequent error type. CONCLUSIONS : Preliminary evidence suggests potentially positive treatment effects. However, rising baseline scores limit causal inference. Replication with more children of different ages is necessary. en_ZA
dc.description.department Speech-Language Pathology and Audiology en_ZA
dc.description.librarian hj2018 en_ZA
dc.description.sponsorship The National Research Foundation of South Africa en_ZA
dc.description.uri http://ajslp.asha.org en_ZA
dc.identifier.citation Van Der Merwe, A. & Steyn, M. Model-driven treatment of childhood apraxia of speech: positive effects of the speech motor learning approach. American Journal of Speech-Language Pathology, February 2018, vol. 27, 37-51. doi:10.1044/2017_AJSLP-15-0193. en_ZA
dc.identifier.issn 1058-0360 (print)
dc.identifier.issn 1558-9110 (online)
dc.identifier.other 10.1044/2017_AJSLP-15-0193
dc.identifier.uri http://hdl.handle.net/2263/64071
dc.language.iso en en_ZA
dc.publisher American Speech Language Hearing Association en_ZA
dc.rights © 2018 American Speech-Language-Hearing Association en_ZA
dc.subject Childhood apraxia of speech (CAS) en_ZA
dc.subject Speech motor learning (SML) en_ZA
dc.title Model-driven treatment of childhood apraxia of speech : positive effects of the speech motor learning approach en_ZA
dc.type Postprint Article en_ZA


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