Visual Speech Perception in Children With Language Learning Impairments
Visual Speech Perception in Children With Language Learning Impairments
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DOI：
10.1044/2015_jslhr-s-14-0269
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发表时间：
2016-02-01
影响因子：
2.6
通讯作者：
Rosen, Stuart
中科院分区：
文献类型：
--
作者：
Knowland, Victoria C. P.;Evans, Sam;Rosen, Stuart
目的：本研究的目的是评估发展性语言学习障碍儿童（Developmental Language Learning Impairments，LLIs）利用说话人面部视觉言语线索的能力。（平均年龄：8岁0个月，范围：4岁5个月至11岁10个月）和27名诊断为LLI的儿童（平均年龄：8岁10个月，范围：5岁2个月至11岁6个月）完成了一个无声的语音阅读任务和语音噪声任务，有和没有视觉支持，从说话的脸。在噪声中的语音任务涉及识别的目标词在一个载体的句子与一个单一的竞争扬声器作为masker.Results：在LLI组的儿童表现出赤字的speechreading相比，他们通常发展的同龄人。在单词水平之外，这种缺陷在年龄较大的儿童中变得更加明显。在噪声任务的语音，视觉线索的实质性好处被发现，无论年龄或组成员，虽然LLI组表现出整体发展滞后的语音perception.Conclusion：虽然LLI儿童不准确比他们的同龄人的语音阅读和语音噪声任务，这两组都能够同等使用的视觉线索，以提高性能的准确性时，在噪音中听。
Purpose: The purpose of the study was to assess the ability of children with developmental language learning impairments (LLIs) to use visual speech cues from the talking face.Method: In this cross-sectional study, 41 typically developing children (mean age: 8 years 0 months, range: 4 years 5 months to 11 years 10 months) and 27 children with diagnosed LLI (mean age: 8 years 10 months, range: 5 years 2 months to 11 years 6 months) completed a silent speechreading task and a speech-in-noise task with and without visual support from the talking face. The speech-in-noise task involved the identification of a target word in a carrier sentence with a single competing speaker as a masker.Results: Children in the LLI group showed a deficit in speechreading when compared with their typically developing peers. Beyond the single-word level, this deficit became more apparent in older children. On the speech-in-noise task, a substantial benefit of visual cues was found regardless of age or group membership, although the LLI group showed an overall developmental delay in speech perception.Conclusion: Although children with LLI were less accurate than their peers on the speechreading and speech-in noise-tasks, both groups were able to make equivalent use of visual cues to boost performance accuracy when listening in noise.