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KMID : 1036820190240040996
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Communication Sciences & Disorders
2019 Volume.24 No. 4 p.996 ~ p.1006
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Paralinguistic Characteristics of Children with High-Functioning Autism Spectrum Disorder in Conversation: Expert Perceptual Evaluation and Acoustic Analysis
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Choi Ji-Eun
Lee Yoon-Kyoung
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Abstract
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Objectives: The purpose of this study was to examine the paralinguistic characteristics of children with high-functioning autism spectrum disorder (HFASD) through acoustic analysis, and to investigate whether an expert can perceive the paralinguistic characteristics of HFASD using a perceptual rating scale.
Methods: The participants were a total of 51 children: 17 HFASD children and 34 typically developing (TD) children (17 matched with chronological age and 17 matched with language age). All children’s utterances used for acoustic analysis were extracted from three declarative sentences and two interrogative sentences. The mean pitch, pitch range, loudness, and speech rate were analyzed. For the perceptual evaluation, the 51 conversation samples were randomly numbered according to a set proportion between the two groups. A perceptual rating scale was performed by 6 speech-language pathologies to measure the paralinguistic characteristics.
Results: The results were as follows. In acoustic analysis, there were no significant differences in mean pitch, pitch range, intensity, and speech rate measured with Computerized Speech Lab between the two groups. In perceptual evaluation, there were no significant differences in speech rate and intensity between the two groups, but the HFASD group scored significantly higher in changes of intensity, pitch, and intonation compared to the TD group.
Conclusion: We discussed paralinguistic characteristics of children with HFASD based on these results.
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KEYWORD
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Perceptual evaluation, Acoustic analysis, High-functioning autism spectrum disorder, Paralinguistic, Conversation
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