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KMID : 1036820160210040735
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Communication Sciences & Disorders
2016 Volume.21 No. 4 p.735 ~ p.743
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The Relationship between Acoustic and Perceptual Measurement of Prosodic Characteristics in Children with High-Functioning Autism Spectrum Disorders
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Choi Ji-Eun
Shin Hee-Baek
Lee Yoon-Kyoung
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Abstract
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Objectives: The purpose of this study is to examine the prosodic pattern of children with high-functioning autism spectrum disorder (HFASD) according to acoustic and perceptual measurements and the relationships between them, and to identify the factors influencing the overall impression of prosody for HFASD.
Methods: The participants were 11 children with HFASD age 7 to 9 years and 11 typically developing children matched for chronological age. Each participant’s longest 2-3 utterances within conversational samples were analyzed. The acoustics were analyzed by mean pitch, pitch range, and speech rate using Computerized Speech Lab (CSL). A perceptual measurement was performed by 40 speech language pathology students using a scale to measure the overall impression, pitch, pitch range, and speech rate.
Results: The results were the following: in the perceptual measurement, the HFASD group showed significantly higher pitch, broader pitch range, and an atypical overall impression when compared with the TD group. In the acoustic measurement, the HFASD group revealed a significantly broader pitch range than the TD group. Speech rate showed correlation between the acoustic and perceptual measurement in both groups. For the HFASD group, there was significant correlation between the pitch range in the acoustic measurement and pitch in the perceptual measurement. Pitch range in the perceptual measurement was a significant predictor of overall impression.
Conclusion: We discussed the prosodic patterns of children with HFASD based on these results.
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KEYWORD
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High-functioning autism spectrum disorders, Prosody characteristics, Perceptual measurement, Acoustic measurement
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