Fricative Contrast and Coarticulation in Children With and Without Speech Sound Disorders.
Fricative Contrast and Coarticulation in Children With and Without Speech Sound Disorders.
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有和没有言语障碍的儿童的摩擦音对比和协同发音。
DOI：
10.1044/2017_ajslp-16-0110
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发表时间：
2017
影响因子：
2.6
通讯作者：
Mailend,Marja-Liisa
中科院分区：
文献类型：
--
作者：
Maas,Edwin;Mailend,Marja-Liisa
本研究的目的是，首先，扩大我们对典型语音发展的理解，包括音段对比和预期协同发音，其次，探讨摩擦音对比和预期协同发音在语音障碍儿童（SSD）中的潜在诊断价值。11例SSD患儿用摩擦音（/s/，//）重复载体短语。相关度量是从感知准确的标记获得的光谱平均值导出的2个比率。组分析比较成人和典型的发展中国家的儿童;个别儿童SSD进行了比较，他们各自的典型发展peer.ResultsTypically发展中国家的儿童表现出较小的摩擦声对比度比成人，但类似的coarticulatory模式。3例SSD患儿的摩擦音声学对比度小于正常发育的同龄人，2例患儿的协同发音异常。2名儿童异常coarticulation都有一个儿童失用症的言语的临床诊断;没有明确的模式是明显的SSD亚型较小的摩擦contrast.ConclusionsChildren没有达到成人一样的语音运动控制摩擦生产的年龄10岁，即使摩擦是感知准确。目前的研究结果还表明，异常的协同发音，而不是减少摩擦对比是SSD亚型特异性。https://doi.org/10.23641/asha.5103070 S2和S3：https://doi.org/10.23641/asha.5106508
PurposeThe purpose of this study was, first, to expand our understanding of typical speech development regarding segmental contrast and anticipatory coarticulation, and second, to explore the potential diagnostic utility of acoustic measures of fricative contrast and anticipatory coarticulation in children with speech sound disorders (SSD).MethodIn a cross-sectional design, 10 adults, 17 typically developing children, and 11 children with SSD repeated carrier phrases with novel words with fricatives (/s/, /ʃ/). Dependent measures were 2 ratios derived from spectral mean, obtained from perceptually accurate tokens. Group analyses compared adults and typically developing children; individual children with SSD were compared to their respective typically developing peers.ResultsTypically developing children demonstrated smaller fricative acoustic contrast than adults but similar coarticulatory patterns. Three children with SSD showed smaller fricative acoustic contrast than their typically developing peers, and 2 children showed abnormal coarticulation. The 2 children with abnormal coarticulation both had a clinical diagnosis of childhood apraxia of speech; no clear pattern was evident regarding SSD subtype for smaller fricative contrast.ConclusionsChildren have not reached adult-like speech motor control for fricative production by age 10 even when fricatives are perceptually accurate. Present findings also suggest that abnormal coarticulation but not reduced fricative contrast is SSD-subtype–specific.Supplemental MaterialsS1: https://doi.org/10.23641/asha.5103070. S2 and S3: https://doi.org/10.23641/asha.5106508