유창성장애 아동과 정상 아동의 비유창성과 말 속도에 관한 비교 연구

Disfluency Characteristics and Speech Rate of Stuttering and Nonstuttering

본 연구는 4, 5세 유창성장애 아동 10명과 정상 아동 10명을 대상으로 비유창성 유형(전형적 비유창성, 비전형적 비유창성)과 말속도(전체말속도, 조음속도)의 특성을 비교하였다. 연구 결과, 정상 아동에게서 가장 빈번했던 비유창성 유형은 삽입(평균 4.3회)이었으며, 전형적 비유창성이 전체 비유창성 유형의 86.36 %로 나타났다. 유창성장애 아동에게서 가장 빈번했던 비유창성 유형은 음절반복(평균 5.7회)이었으며, 비전형적 비유창성이 전체 비유창성 유형의 54.09 %로 나타났다. 전형적 비유창성은 제시상황간에, 비전형적 비유창성은 아동집단간에 유의한 차이가 있었다. 정상 아동의 전체말속도는 놀이상황에서 평균 4.94SPS(Syllables Per Second), 과제상황에서 평균 3.66SPS였으며 유창성장애 아동은 놀이상황에서 평균 4.84SPS, 과제상황에서 평균 3.36SPS였다. 정상 아동의 조음속도는 놀이상황에서 평균 5.07SPS, 과제상황에서 평균 3.99SPS였으며 유창성장애 아동은 놀이상황에서 평균 5.26SPS, 과제상황에서 평균 4.32SPS였다. 전체말속도와 조음속도는 제시상황간에 유의한 차이가 있었으며 유창성장애 아동의 경우 놀이상황에서 전체말속도와 조음속도간에 유의한 차이가 나타났다.

The purposes of this study were to compare stuttering children with nonstuttering children in terms of (a) the domain of typical disfluency, (b) the domain of atypical disfluency, (c) the overall speech rate, (d) the articulation rate, and (e) the relation of the overall speech rate and the articulation rate. The results are summarized as follows. First, the most frequent disfluency type of stuttering children was ‘syllable repetition’ and that of nonstuttering children was ‘interjection’. Second, in the domain of typical disfluency, statistically significant differences between the free interaction context and the story telling context were observed in both group. In the domain of atypical disfluency, statistically significant differences between the two groups were observed in each context. Third, the mean overall speech rate was 4.84SPS(Syllables Per Second) and 4.94 SPS in the free interaction context and 3.36SPS and 3.66 SPS in the story telling context, for the stuttering and nonstuttering children, respectively. In both child groups, there were statistically significant differences between the free interaction and story telling contexts in the overall speech rate. Fourth, the mean articulation rate was 5.26SPS and 5.07 SPS in the free interaction context and 4.32SPS and 3.99 SPS in the story telling context, for the stuttering and nonstuttering children, respectively. In both child groups, there were statistically significant differences between the free interaction and story telling contexts in the articulation rate. Fifth, the stuttering children had a significantly different speech rate between the overall speech rate and the articulation rate in both contexts. However, the nonstuttering children did not have a significantly different speech rate in the free interaction context.