발달성 말실행증의 연접과 문미 억양구 특성 비교
A study of internal juncture and IP-final boundary tone in sentence accent in children with developmental apraxia of speech/developmental verbal apraxia and phonological disorder
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초록
본 연구의 목적은 발달성 말실행증, 조음음운장애, 정상 발달아동들을 대상으로 문장의 연접과 문미 억양구의 특징을 살펴보고 그 결과를 토대로 발달성 말실행증 아동들을 조음음운장애 아동들로부터 감별하는데 있다. 연구 대상은 3세 6개월에서 5세 2개월의 발달성 말실행증 아동 5명, 조음음운장애 아동 5명, 정상 발달아동 5명으로 구성된 세 집단 총 15명을 대상으로 하였다. 연접은 내적 개연접과 내적 폐연접으로 나누어서 평가하였고, 문미 억양구는 H%, HL%, LH%, LHL%를 이용하여 평가하였다. 본 연구의 결과는 다음과 같다. 첫째, 내적 연접은 발달성 말실행증 아동과 정상 발달아동만이 유의한 차이가 났다. 둘째, 발달성 말실행증 아동들이 조음음운장애와 정상 발달아동들에 비해 유의하게 더 많은 문미 억양구 오류를 범하였다. 이상의 연구 결과를 통해 발달성 말실행증은 초분절적 능력이 지체되거나 편차되었고 이는 그들이 운동 프로그래밍뿐만 아니라 언어적 계획에도 문제가 있다고 해석할 수 있다. 따라서 본 연구 결과는 발달성 말실행증을 치료할 때 단지 운동 프로그램과 관련된 중재뿐만 아니라 언어 처리 과정 역시 중재가 필요하다는 것을 시사한다.
Abstract
The purpose of this investigation was to study suprasegmental abilities of three children who had been diagnosed with developmental apraxia of speech/developmental verbal apraxia(DAS/DVA), phonological disorder(PD) and typically developing speech(TD). Three groups of children, who are 5 children with DAS/DVA, 5 children with PD, 5 children with TD were administered suprasegmental tasks. This study is designed to examine the internal juncture and IP-final boundary tone in sentence accent. First, internal juncture is divided into internal open and close juncture. Second, since an accentual phrase(AP) boundary tone in an intonation phrase(IP)-final position is overridden by the IP-final boundary tone, only the IP-final boundary tone(%) was labeled at the end of an IP. This study was used to H%, LH%, HL%, LHL% in IP-final position. Perceptual measures of accuracy of target phrases used 5 rating scales. The principal findings of this study were as follows:First, interval scales of internal juncture produced by children with DAS/DVA and TD was only significant in this study. Second, when IP-final position in sentence accent was examined, DAS/DVA group made significantly more error than the PD group. Overall, the results of this study support the theory that DAS/DVA may have an deviant and delayed phonological representation system and suprasegmental ability in children with DAS/DVA were reflected "linguistic planning" as well as motoric programming" processes. These results suggest that treatment protocols for DAS/DVA should encompass linguistic processing as well as motor programming activities.
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