Article
Comparison of Phonological Representation Judgment Performance Across Subtypes of Articulation and Phonological Disorders
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Abstract
Purpose: This study compared phonological representation judgment performance among typically developing children and children with articulation disorder, phonological delay, and phonological disorder in both chronological-age-matched and language-age-matched groups. It also examined performance across consonant- and vowel-manipulation conditions and according to developmental and non-developmental error types in consonant-manipulated stimuli. Methods: A total of 106 children aged 4–6 years (71 typically developing children and 35 children with articulation and phonological disorders) participated. Children with articulation and phonological disorders were classified as having an articulation disorder (n = 10), a phonological delay (n = 11), or a phonological disorder (n = 14). Chronological age-matched (n = 82) and language age-matched (n = 77) groups were formed from the participants, who completed a phonological representation judgment task comprising consonant- and vowel-manipulated stimuli.Results: In the chronological age-matched group, typically developing children outperformed children with phonological disorders in overall task performance and specifically in the consonant-manipulation condition. However, no significant differences between the groups were found in the language age-matched group. In both matched groups, performance was better in the vowel-manipulation condition compared to the consonant-manipulation condition. Additionally, no distinct performance patterns were observed based on developmental and non-developmental error types.Conclusions: Phonological representation judgment performance may vary according to subtype and level of language development rather than constitute a fixed characteristic of articulation and phonological disorder subtypes. Results regarding error types should be considered exploratory.