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Sentence repetition with bilinguals with and without DLD: Differential effects of memory, vocabulary, and exposure
Bilingualism: Language and Cognition ( IF 4.763 ) Pub Date : 2020-09-11 , DOI: 10.1017/s1366728920000498
Amy S. Pratt , Elizabeth D. Peña , Lisa M. Bedore

Though previous research has shown that sentence repetition (SR) is an informative tool for identifying developmental language disorder (DLD) in bilinguals, little is understood about the skills that underlie children's performance on the task. With a population of 136 school-age Spanish–English bilinguals, the present study explores the contribution of verbal short-term memory, vocabulary, and language exposure on two SR tasks developed in English and Spanish. Results indicate that these skills may differentially underlie SR in typical versus disordered populations. Whereas the strongest predictors of English SR performance for typical bilingual children were expressive vocabulary and language exposure, bilingual children with DLD relied most heavily on verbal short-term memory. ROC curves to determine the classification accuracy of SR were conducted. Classification accuracy was excellent, with area under the curve reaching .92 for the English SR task and .87 for Spanish SR.

中文翻译:

有和没有 DLD 的双语者的句子重复:记忆、词汇和暴露的不同影响

尽管先前的研究表明,句子重复 (SR) 是一种用于识别双语者发育性语言障碍 (DLD) 的信息工具,但对于儿童在任务中表现的基础技能知之甚少。本研究共有 136 名学龄西班牙语-英语双语者,探讨了口头短期记忆、词汇和语言暴露对用英语和西班牙语开发的两项 SR 任务的贡献。结果表明,这些技能可能在典型和无序人群中以不同的方式成为 SR 的基础。虽然对典型双语儿童的英语 SR 表现的最强预测因素是表达性词汇和语言接触,但患有 DLD 的双语儿童最依赖口头短期记忆。进行了确定 SR 分类精度的 ROC 曲线。分类准确性非常好,英语 SR 任务的曲线下面积达到 0.92,西班牙语 SR 的曲线下面积达到 0.87。
更新日期:2020-09-11
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