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말소리장애 아동의 조음복잡성에 따른 비유창성 및 조음오류 특성
신가은(Ga Eun Shin),하지완(Ji Wan Ha) 한국언어치료학회 2015 言語治療硏究 Vol.24 No.1
Purpose: This study will compare disfluency and articulation errors depending on phonetic complexity levels between children with speech sound disorders (SSD) and typically developing (TD) children. Methods: Seventeen preschoolers with SSD and 17 TD preschoolers participated in a picture-description test. The subjects described pictures that were composed of words with two phonetic complexity levels ('low' and 'high'). The collected spoken samples were comparatively analyzed with each group's ratio according to disfluency types and articulation errors. Results: Both groups showed significantly high disfluency ratios at the 'high' level of phonetic complexity, and in the group with SSD, the articulation errors without disfluency in both levels of phonetic complexity were significantly abundant. In addition, no interaction effect between the phonetic complexity levels and the articulation error types was observed, so it was concluded that there were no differences of error-type ratios in either level. Conclusions: As the phonetic complexity level increases, the children may have more burden in phonological/phonetic processing, so the difficulty of speech production also increases. Due to such difficulty, disfluency may appear and there is evidence that there is a trade-off relationship between phonological processing deficit and speech disfluency.