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首页> 外文期刊>Journal of communication disorders >The effect of bilingual exposure versus language impairment on nonword repetition and sentence imitation scores
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The effect of bilingual exposure versus language impairment on nonword repetition and sentence imitation scores

机译：双语暴露与语言障碍对非单词重复和句子模仿分数的影响

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Purpose: Nonword repetition (NWR) and sentence imitation (SI) are increasingly used as diagnostic tools for the identification of Primary Language Impairment (PLI). They may be particularly promising diagnostic tools for bilingual children if performance on them is not highly affected by bilingual exposure. Two studies were conducted which examined (1) the effect of amount of bilingual exposure on performance on French and English nonword repetition and sentence imitation in 5-year-old French-English bilingual children and (2) the diagnostic accuracy of the French versions of these measures and of receptive vocabulary in 5-year-old monolingual French-speakers and bilingual speakers with and without PLI, carefully matched on language exposure. Method: Study 1 included 84 5-year-olds acquiring French and English simultaneously, differing in their amount of exposure to the two languages but equated on age, nonverbal cognition and socio-economic status. Children were administered French and English tests of NWR and SI. In Study 2, monolingual and bilingual children with and without PLI (four groups, n=. 14 per group) were assessed for NWR, SI, and receptive vocabulary in French to determine diagnostic accuracy. Results: Study 1: Both processing measures, but in particular NWR, were less affected by previous exposure than vocabulary measures. Bilingual children with varying levels of exposure were unaffected by the length of nonwords. Study 2: In contrast to receptive vocabulary, NWR and SI correctly distinguished children with PLI from children with typical development (TD) regardless of bilingualism. Sensitivity levels were acceptable, but specificity was lower. Conclusions: Bilingual children perform differently than children with PLI on NWR and SI. In contrast to children with PLI, bilingual children with a large range of previous exposure levels achieve high NWR scores and are unaffected by the length of the nonwords.Learning outcomes: Readers will recognize the effect of language input on the rate of language development, focusing specifically on how bilingual exposure affects the language learning of each language of bilingual children.
机译：目的：非单词重复（NWR）和句子模仿（SI）越来越多地用作识别主要语言障碍（PLI）的诊断工具。如果双语儿童对他们的表现没有很大的影响，它们对于双语儿童可能是特别有前途的诊断工具。进行了两项研究，研究了（1）双语暴露量对5岁法语-英语双语儿童中法语和英语非单词重复和句子模仿的表现的影响，以及（2）法语版本的诊断准确性这些措施以及接受和不接受PLI的5岁单语说法语和双语者接受语言的能力，并在语言暴露方面进行了仔细匹配。方法：研究1包括84位5岁的儿童，他们同时获得法语和英语，这两种语言的接触程度有所不同，但在年龄，非语言认知和社会经济地位上均相等。对儿童进行了NWR和SI的法语和英语考试。在研究2中，对有或没有PLI的单语和双语儿童（四组，每组n =。14）进行法语评估，以评估其NWR，SI和接受词汇。结果：研究1：与词汇量相比，两种加工方法（特别是NWR）受先前接触的影响较小。具有不同暴露水平的双语儿童不受单词长度的影响。研究2：与接受词汇相反，无论双语者如何，NWR和SI都能正确区分PLI儿童与典型发育（TD）儿童。敏感性水平是可以接受的，但特异性较低。结论：双语儿童在NWR和SI上的表现与PLI儿童不同。与PLI儿童相比，先前接触水平较高的双语儿童获得较高的NWR分数，且不受非单词长度的影响。学习成果：读者将认识到语言输入对语言发展速度的影响，专注于特别是双语接触如何影响双语儿童每种语言的学习。

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