Archibald Lisa M D, Joanisse Marc F
School of Communication Sciences and Disorders, Elborn College, University of Western Ontario, London, Ontario, Canada.
J Speech Lang Hear Res. 2009 Aug;52(4):899-914. doi: 10.1044/1092-4388(2009/08-0099). Epub 2009 Apr 29.
The present study examined the utility of 2 measures proposed as markers of specific language impairment (SLI) in identifying specific impairments in language or working memory in school-age children.
A group of 400 school-age children completed a 5-min screening consisting of nonword repetition and sentence recall. A subset of low (n = 52) and average (n = 38) scorers completed standardized tests of language, short-term and working memory, and nonverbal intelligence.
Approximately equal numbers of children were identified with specific impairments in either language or working memory. A group about twice as large had deficits in both language and working memory. Sensitivity of the screening measure for both SLI and specific working memory impairments was 84% or greater, although specificity was closer to 50%. Sentence recall performance below the 10th percentile was associated with sensitivity and specificity values above 80% for SLI.
Developmental deficits may be specific to language or working memory, or include impairments in both areas. Sentence recall is a useful clinical marker of SLI and combined language and working memory impairments.
本研究检验了作为特定语言障碍（SLI）标志物提出的两种测量方法在识别学龄儿童语言或工作记忆特定障碍方面的效用。
一组400名学龄儿童完成了一项由非词重复和句子回忆组成的5分钟筛查。得分较低（n = 52）和中等（n = 38）的一个子集完成了语言、短期和工作记忆以及非言语智力的标准化测试。
被识别出在语言或工作记忆方面有特定障碍的儿童数量大致相等。有一组儿童在语言和工作记忆方面都存在缺陷，其规模约为前一组的两倍。筛查测量对SLI和特定工作记忆障碍的敏感性均为84%或更高，不过特异性接近50%。句子回忆表现低于第10百分位数与SLI的敏感性和特异性值高于80%相关。
发育缺陷可能特定于语言或工作记忆，或者包括这两个领域的障碍。句子回忆是SLI以及合并的语言和工作记忆障碍的有用临床标志物。
