Guo Ling-yu, Tomblin J Bruce, Samelson Vicki
Department of Speech Pathology and Audiology, University of Iowa, 119 SHC, Iowa City, IA 52242, USA.
J Speech Lang Hear Res. 2008 Jun;51(3):722-38. doi: 10.1044/1092-4388(2008/051).
This study examined the types, frequencies, and distribution of speech disruptions in the spoken narratives of children with specific language impairment (SLI) and their age-matched (CA) and language-matched (LA) peers.
Twenty 4th-grade children with SLI, 20 typically developing CA children, and 20 younger typically developing LA children were included in this study. Speech disruptions (i.e., silent pauses and vocal hesitations) occurring in the narratives of these children were analyzed.
Children with SLI exhibited speech disruption rates that were higher than those of their age-matched peers but not higher than those of their language-matched peers. The difference in disruption rates between the SLI and CA groups was restricted to silent pauses of 500-1000 ms. Moreover, children with SLI produced more speech disruptions than their peers before phrases but not before sentences, clauses, or words.
These findings suggest that there is a relationship between language ability and speech disruptions. Higher disruption rates at phrase boundaries in children with SLI than in their age-matched peers reflect lexical and syntactic deficits in children with SLI.
本研究考察了特定语言障碍（SLI）儿童及其年龄匹配（CA）和语言匹配（LA）的同龄人在口语叙述中言语中断的类型、频率和分布情况。
本研究纳入了20名四年级的SLI儿童、20名发育正常的CA儿童和20名年龄较小、发育正常的LA儿童。对这些儿童叙述中出现的言语中断（即沉默停顿和言语犹豫）进行了分析。
SLI儿童的言语中断率高于其年龄匹配的同龄人，但不高于其语言匹配的同龄人。SLI组和CA组在中断率上的差异仅限于500 - 1000毫秒的沉默停顿。此外，SLI儿童在短语之前比同龄人产生更多的言语中断，但在句子、从句或单词之前则不然。
这些发现表明语言能力与言语中断之间存在关联。SLI儿童在短语边界处的中断率高于其年龄匹配的同龄人，这反映了SLI儿童在词汇和句法方面的缺陷。
