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Non-word repetition in Spanish-English bilinguals with and without language impairment.

机译：具有和不具有语言障碍的西班牙语-英语双语者中的非单词重复。

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摘要

The identification of Spanish-English (SE) bilingual children with language impairment (LI) is challenging. Currently there is a dearth of language screening measures designed for Spanish-speaking populations; thus, the construction of a new screening measure is warranted. Non-word repetition (NWR) tasks that measure phonological short-term memory are very successful identifying English-speaking children with LI; however, research on the identification of LI in SE bilingual children using NWR tasks is limited. Further, the impact of non-word characteristics, such as the language that the non-words are based on (language basis), syllable length (length), phonotactic probability (PP) and neighborhood density (ND), on NWR accuracy in bilingual children with LI and with TD have yet to be evaluated. A Spanish-only and an English-only NWR task that controlled for PP, ND, and syllable length were created and administered to 125 SE bilingual children, 79 with typical language development (TD) (Mean age 75.62 months, SD=8.74) and 53 with LI (Mean age 78.33 months, SD=7.88). SE bilingual children with LI accurately repeated significantly less percent phonemes correct on the Spanish and English NWR tasks than same age peers with TD. An evaluation of the non-word characteristics as predictors of NWR accuracy indicated that the linear combination of language basis, length, and ND accounted for more than 60% of the variance in Spanish and English NWR accuracy. Furthermore, the linear combination of language basis, length, and ND significantly accounted for 14% of the variance in the between group (TD vs. LI) difference in Spanish and English NWR accuracy. The clinical utility of the NWR tasks to detect LI in SE bilingual children was evaluated. Results indicated that the Spanish-only and the English-only NWR tasks did not provide adequate classification accuracy for the screening of LI in SE bilingual children. An improvement in classification accuracy was observed when using a combination of non-words from the Spanish-only and English-only NWR tasks; however, the likelihood ratios for the combined task were not adequate to rule in a child with LI. Results of the study do not support using a NWR task as an independent method for identifying LI in SE bilingual children.
机译：识别具有语言障碍（LI）的西班牙英语（SE）双语儿童具有挑战性。目前，缺乏针对西班牙语人群的语言筛查措施；因此，有必要建立一种新的筛选措施。测量语音短期记忆的非单词重复（NWR）任务非常成功，可以识别英语为LI的儿童。然而，使用NWR任务识别SE双语儿童LI的研究非常有限。此外，非单词特征（例如，非单词所基于的语言（语言基础），音节长度（长度），音符概率（PP）和邻域密度（ND））对双语NWR准确性的影响LI和TD患儿尚待评估。创建了控制PP，ND和音节长度的仅西班牙语和仅英语的NWR任务，并将其管理给125名SE双语儿童，79名具有典型语言发展（TD）的儿童（平均年龄75.62个月，SD = 8.74）和53岁（平均年龄78.33个月，SD = 7.88）。具有SE的SE双语儿童在西班牙语和英语NWR任务上正确重复的音素百分比与TD的同龄同龄人相比准确率要低得多。对非单词特征作为NWR准确性的预测指标进行的评估表明，语言基础，长度和ND的线性组合占西班牙语和英语NWR准确性方差的60％以上。此外，语言基础，长度和ND的线性组合明显占西班牙语和英语NWR准确性之间组间差异（TD与LI的差异）的14％。评价了NWR任务在SE双语儿童中检测LI的临床效用。结果表明，仅西班牙语和仅英语的NWR任务无法为SE双语儿童的LI筛查提供足够的分类准确性。当结合仅使用西班牙语和仅使用英语的NWR任务中的非单词时，可以观察到分类准确性的提高；但是，合并任务的似然比不足以决定儿童的LI。研究结果不支持使用NWR任务作为识别SE双语儿童LI的独立方法。

著录项

  • 作者

    Morgan, Gareth Philip.;

  • 作者单位

    Arizona State University.;

  • 授予单位 Arizona State University.;
  • 学科 Education Bilingual and Multicultural.;Education Educational Psychology.;Health Sciences Speech Pathology.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 148 p.
  • 总页数 148
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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