Kazemi Yalda, Saeednia Soodeh
Child Language Research Cluster, School of Rehabilitation Sciences, Department of Speech Therapy, Isfahan University of Medical Sciences, Isfahan, Iran.
Student Research Committee, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
Int J Pediatr Otorhinolaryngol. 2017 Feb;93:7-12. doi: 10.1016/j.ijporl.2016.11.028. Epub 2016 Nov 30.
This study aimed to examine the diagnostic accuracy of a non-word repetition (NWR) test in identifying Persian-speaking preschool children with specific/primary language impairment (PLI). Children with PLI show consistently poorer performance in non-word repetition tasks than their typically developing language (TDL) counterparts. It is assumed that the ability to repeat non-words triggers language skills and that the absence of this ability may be responsible for language impairment in PLI children.
Twenty preschool children with PLI participated in this study and were compared with 31 peers whose language skills were developing typically. The TDL children were randomly selected from daycare centers, and the children with PLI were referred by qualified speech-language pathologists from speech therapy clinics. A Persian NWR test was administered and scored using two levels of scoring: item-level scoring and syllable-level scoring. Data were analyzed in two phases. The first phase aimed to determine any differences between the two groups of children in terms of NWR ability. The second phase examined the diagnostic measures of the test.
The results of first phase documented that both scoring methods for the NWR test significantly differentiated between children with PLI and their normal peers. The second phase indicated that both scoring methods for the NWR test have good sensitivity and specificity in differentiating Persian-speaking children with PLI from their normal peers.
Non-word repetition can be a reliable clinical marker of PLI in Persian-speaking preschool children.
本研究旨在检验非词重复（NWR）测试在识别患有特定/原发性语言障碍（PLI）的讲波斯语学龄前儿童方面的诊断准确性。患有PLI的儿童在非词重复任务中的表现始终比其语言发展正常（TDL）的同龄人差。据推测，重复非词的能力会激发语言技能，而缺乏这种能力可能是PLI儿童语言障碍的原因。
20名患有PLI的学龄前儿童参与了本研究，并与31名语言技能发展正常的同龄人进行了比较。TDL儿童是从日托中心随机挑选的，而患有PLI的儿童是由言语治疗诊所合格的言语病理学家转介的。采用波斯语NWR测试，并使用两种评分水平进行评分：项目水平评分和音节水平评分。数据分两个阶段进行分析。第一阶段旨在确定两组儿童在NWR能力方面的任何差异。第二阶段检验了该测试的诊断指标。
第一阶段的结果表明，NWR测试的两种评分方法都能显著区分患有PLI的儿童与其正常同龄人。第二阶段表明，NWR测试的两种评分方法在区分讲波斯语的PLI儿童与其正常同龄人方面具有良好的敏感性和特异性。
非词重复可以作为讲波斯语学龄前儿童PLI的可靠临床指标。
