An acoustic study of lexical stress contrastivity in children with and without autism spectrum disorders
An acoustic study of lexical stress contrastivity in children with and without autism spectrum disorders
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DOI：
10.1017/s0305000918000272
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发表时间：
2019-01-01
影响因子：
2.2
通讯作者：
Bailey, Benjamin
中科院分区：
文献类型：
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作者：
Arciuli, Joanne;Bailey, Benjamin
在这项探索性研究中，我们研究了压力对比度内真实的字生产引起的图片命名在20名自闭症谱系障碍（ASD）儿童和20名典型的同龄人组明智的年龄和词汇匹配。目标有一个主导模式的词汇重音开始与一个强大的弱模式（SW：“毛毛虫”，“蝴蝶”）或一个非主导模式的词汇重音开始与弱强模式（WS：“番茄”，“土豆”）。儿童生产每个目标两次（n = 320生产）。声学措施的持续时间，基本频率和强度的前两个元音为每个字的生产。对于元音的持续时间和基本频率，ASD儿童和典型的同龄人产生了类似的SW和WS字的压力对比度。然而，有一个显着的组差异的方式对比强度实现WS的话，ASD儿童产生的压力对比度比典型的同龄人。贝叶斯分析与我们对频率论分析的解释一致。
In this exploratory study, we examined stress contrastivity within real word productions elicited via picture naming in 20 children with autism spectrum disorders (ASD) and 20 typical peers group-wise matched on age and vocabulary. Targets had a dominant pattern of lexical stress beginning with a strong weak pattern (SW: 'caterpillar', 'butterfly') or a non-dominant pattern of lexical stress beginning with a weak strong pattern (WS: 'tomato', 'potato'). Children produced each target twice (n = 320 productions). Acoustic measures were made for the duration, fundamental frequency, and intensity of the first two vowels for each word production. For vowel duration and fundamental frequency, children with ASD and typical peers produced a similar magnitude of stress contrastivity for SW and WS words. However, there was a significant group difference in the way contrastivity in intensity was realised for WS words whereby children with ASD produced less stress contrastivity than typical peers. Bayesian analyses were in line with our interpretation of our frequentist analyses.