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首页> 外文期刊>Journal of speech, language, and hearing research: JSLHR >Examining the language performances of children with and without specific language impairment: contributions of phonological short-term memory and speed of processing.
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Examining the language performances of children with and without specific language impairment: contributions of phonological short-term memory and speed of processing.

机译：检查有无特定语言障碍儿童的语言表现：语音短期记忆的贡献和处理速度。

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PURPOSE: This study investigated the effects of processing speed and phonological short-term memory (PSTM) on children's language performance. METHOD: Forty-eight school-age children with specific language impairment (SLI) and age peers completed auditory detection reaction time (RT) and nonword repetition tasks, the Clinical Evaluation of Language Fundamentals-Revised (CELF-R; E. Semel, E. Wiig, & W. Secord, 1987), and a word recognition RT task. Correlation and regression were used to determine unique and shared contributions to variance among measures. RESULTS: Children with SLI were outperformed by age peers on each task. Auditory detection RT was correlated with nonword repetition (NWR) in each group. However, both variables covaried with age, and auditory detection RT did not contribute unique variance to NWR in either group. For the SLI group, NWR predicted unique variance in CELF-R performance (about 15%); auditory detection RT predicted a smaller amount of unique variance in the word recognition RT task (about 9%). CONCLUSION: Processing speed and PSTM measures covaried with chronological age. Processing speed was associated with offline language performance only through association with PSTM. Processing speed contributed to online language performance, suggesting that speed is associated with processing more familiar language material (i.e., lexical content and structure) than less familiar material (e.g., various content on the CELF-R).
机译：目的：本研究调查了处理速度和语音短期记忆（PSTM）对儿童语言表现的影响。方法：四十八名患有特定语言障碍（SLI）和同龄人的学龄儿童完成了听觉检测反应时间（RT）和非单词重复任务，《语言基础修订的临床评估》（CELF-R; E。Semel，E Wiig和W. Secord，1987年），以及单词识别RT任务。相关和回归用于确定度量之间方差的独特和共享贡献。结果：SLI儿童在各项任务上的表现均优于同龄儿童。听觉检测RT与每组中的非单词重复（NWR）相关。但是，这两个变量均与年龄相关，并且听觉检测RT对两组中的NWR均无贡献。对于SLI组，NWR预测CELF-R表现存在独特差异（约15％）;听觉检测RT预测单词识别RT任务中的唯一变异量较小（约9％）。结论：处理速度和PSTM度量值与时间年龄有关。仅通过与PSTM关联，处理速度才与脱机语言性能关联。处理速度有助于提高在线语言的性能，这表明速度与处理较不熟悉的语言材料（例如，词汇内容和结构）有关（而不是与CELF-R上的各种内容相关）。

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