Diagnosing inconsistent phonological disorder : Quantitative and qualitative measures
Journal article
Dodd, Barbara, McIntosh, Beth, Crosbie, Sharon and Holm, Alison. (2023). Diagnosing inconsistent phonological disorder : Quantitative and qualitative measures. Clinical Linguistics & Phonetics. 38(5), pp. 453-476. https://doi.org/10.1080/02699206.2023.2224916
Authors | Dodd, Barbara, McIntosh, Beth, Crosbie, Sharon and Holm, Alison |
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Abstract | Studies of children’s consistency of word production allow identification of speech sound disorder. Inconsistent errors are reported for two groups of children: childhood apraxia of speech (CAS) due to difficulty with the motoric precision and consistency of speech movements; and inconsistent phonological disorder (IPD) attributed to impaired phonological planning. This paper describes the inconsistent productions of children with IPD in comparison to typically developing children. In two studies of suspected SSD (N = 135), 22 children pronounced ≥40% of 25 words inconsistently on three repeated trials. No participant had symptoms of CAS. They were monolingual and spoke Australian- or Irish-English. Assessment determined the proportions of words said consistently (i.e. the same across productions: all correct or with the same error) or inconsistently (i.e. differently across productions: at least one correct and one error or different errors in productions). Qualitative analyses examined error types and explored the effect of target words’ characteristics on inconsistency. Children with IPD produced 52% of words with different errors. While 56% of all phoneme errors were developmental (age appropriate or delayed), atypical errors typified inconsistency: default sounds and word structure errors. Words with more phonemes, syllables and consonant clusters were vulnerable to inconsistency, but their frequency of occurrence had no effect. TD children and those with IPD had different quantitative and qualitative error profiles, confirming IPD as a diagnostic category of SSD. Qualitative analyses supported the hypothesised deficit in phonological planning of words’ production for children with IPD. |
Keywords | inconsistency; speech sound disorder; qualitative measures; differential diagnosis |
Year | 2023 |
Journal | Clinical Linguistics & Phonetics |
Journal citation | 38 (5), pp. 453-476 |
Publisher | Taylor & Francis |
ISSN | 0269-9206 |
Digital Object Identifier (DOI) | https://doi.org/10.1080/02699206.2023.2224916 |
PubMed ID | 37382651 |
Scopus EID | 2-s2.0-85163743810 |
Open access | Published as ‘gold’ (paid) open access |
Page range | 453-476 |
Funder | National Health and Medical Research Council (NHMRC) |
Publisher's version | License File Access Level Open |
Output status | Published |
Publication dates | |
Online | 29 Jun 2023 |
Publication process dates | |
Accepted | 05 Jun 2023 |
Deposited | 02 Apr 2025 |
Grant ID | GNT1153614 |
Additional information | © 2023 The Author(s). Published with license by Taylor & Francis Group, LLC. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent. |
https://acuresearchbank.acu.edu.au/item/918v1/diagnosing-inconsistent-phonological-disorder-quantitative-and-qualitative-measures
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Publisher's version
OA_Dodd_2023_Diagnosing_inconsistent_phonological_disorder_Quantitative_and.pdf | |
License: CC BY 4.0 | |
File access level: Open |
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