探索发言和语言障碍儿童在非单词重复中产生的元音错误
Janet Vuolo1, Taylor L Gifford2
1Department of Speech and Hearing Science, The Ohio State University, Columbus, Ohio, USA.
患有发育性语言障碍 (DLD) 和童年语音失调 (CAS) 的儿童在非单词重复 (NWR) 任务中经常表现出母音错误,表明编码和记忆的弱点. 患有CAS的儿童也表现出运动规划问题. 语音音障碍 (SSD) 涉及较轻微的处理缺陷.
科学领域:
- 语言学的语言学.
- 语音和语言病理学 语言病理学
- 发展心理学 发展心理学
背景情况:
- 非单词重复 (NWR) 任务评估编码,记忆和运动规划技能,这些技能对言语至关重要.
- NWR 中的元音错误与儿童语音失调 (CAS) 有关,但也在发育性语言障碍 (DLD) 中观察到.
- 了解母音错误模式可以区分言语和语言障碍.
研究的目的:
- 调查NWR中的母音错误类型和频率是否区分了DLD,CAS,SSD和典型发育 (TD) 的儿童.
- 探索与这些言语和语言障碍相关的潜在处理弱点.
主要方法:
- 追溯分析了24名儿童的NWR数据 (每组6:DLD,CAS,SSD,TD),年龄在50-92个月之间.
- 计算各种元音错误类型 (单音,双音) 根据音节长度和组.
- 使用重复测量的统计分析,分析差异以比较组.
主要成果:
- 患有DLD和CAS的孩子比TD的孩子产生了明显更多的总母音错误.
- DLD组显示出更多的单音错误; DLD和CAS组显示出更多的双音错误,而不是TD.
- CAS错误包括二替代和减少;DLD错误主要涉及二替代.
- SSD组的错误率与其他组没有显著差异.
结论:
- 患有DLD和CAS的儿童在NWR中表现出显著的母音错误率,这表明编码和记忆缺陷.
- 运动规划困难与CAS中二错误的增加特别相关.
- 与DLD和CAS组相比,SSD儿童表现出较轻微的处理困难.
- 在NWR中分析元音错误模式可以完善语音和语言障碍的诊断差异化.
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