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ORIGINAL ARTICLE
Commun Sci Disord. 2020;25(4): 929-937.
Published online December 31, 2020.
doi: https://doi.org/10.12963/csd.20763
Nonword Repetition in Terms of Subtypes of Children with Speech Sound Disorders
Seunghee Ha
Division of Speech Pathology and Audiology, Audiology and Speech Pathology Research Institute, Hallym University, Chuncheon, Korea
Corresponding Author: Seunghee Ha ,Tel: +82-33-248-2215, Fax: +82-33-256-3420, Email: shha@hallym.ac.kr
Received October 5, 2020  Revised: November 6, 2020   Accepted November 6, 2020
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ABSTRACT
Objectives
This study aimed to examine nonword repetition performances between children with speech sound disorders (SSD) with and without co-occurring language disorders and in subgroups of SSD by linguistic symptomatology.
Methods
This study included 206 typically developing children, 120 children with SSD and 44 children with language impairments aged 3 to 7 years. All participants were asked to repeat nonword lists and the percent of correct nonword repetitions were measured by items, syllables, and phonemes. Nonword repetition performances were compared among typically developing children, children with SSD only, co-occurring SSD with language impairment, and language impairment only by controlling age and percentage of consonants correct (PCC) as covariates. Four subgroups of SSD by linguistic symptomatology, articulation disorder, phonology delay, consistent phonological disorder, and inconsistent phonological disorder were examined for whether they show different performances in nonword repetition tasks.
Results
Children with SSD only showed significantly higher performance compared with the other three groups including typically developing children after controlling for age and PCC. Children with co-occurring SSD with language impairment showed the lowest performance. Inconsistent phonological disorders showed a significantly lower percent correct nonword repetitions measured by phonemes than the other three subgroups of SSD classified by linguistic symptomatology.
Conclusion
This study suggested that nonword repetition tasks could help us identify children with SSD with co-occurring language impairment or inconsistent phonological disorders who might have different underlying deficits on speech-language process from other subtypes of SSD.
Keywords: Speech sound disorders | Co-occurring language impairment | Subtypes | Non-word repetition
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