Abstract

Purpose

This study investigated the relationship between three practical measures for evaluating Persian grammar expression skills, MLU, PDSS, and PEGT, in preschool children with developmental language disorder (DLD) and their typically developing (TD) peers.

Method

Secondary data were obtained by re-analyzing language samples collected in previous studies. Previously audiotaped language samples of 25 monolingual 5–7 years-old Persian children with DLD and 25 TD children were transcribed and reanalyzed to calculate MLU in words (MLU-w) and PDSS for comparison with the results of PEGT.

Results

Children with DLD had lower scores in PEGT, PDSS, and MLU-w than TD children (p < 0.001). In addition, there was a strong correlation between PDSS and MLU-w in both DLD (r = 0.91) and TD groups (r = 0.79). There was a significant correlation between PEGT and MLU (r = 0.76) and PDSS (r = 0.78) in the DLD group, while these correlations were not significant in TD group.

Conclusions

Considering the positive and significant correlation between MLU, PDSS, and PEGT in children with DLD, the use of PEGT, as a valid, reliable, and accurate test of grammar, which can be implemented quickly and easily, is suggested for clinical purposes of identification and screening of Persian children with DLD.

中文翻译：

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典型发育儿童和发育性语言障碍（DLD）儿童的平均话语长度（MLU）、波斯语发展句子评分（PDSS）和照片表现性波斯语语法测试（PEGT）之间的关系

摘要

目的

本研究调查了评估波斯语语法表达技能的三种实用措施（MLU、PDSS 和 PEGT）之间的关系，这些措施针对患有发育性语言障碍 (DLD) 的学龄前儿童和正常发育 (TD) 的同龄人。

方法

二手数据是通过重新分析先前研究中收集的语言样本获得的。对先前录制的 25 名单语 5-7 岁波斯语 DLD 儿童和 25 名 TD 儿童的录音语言样本进行转录和重新分析，以计算单词 MLU (MLU-w) 和 PDSS，以便与 PEGT 结果进行比较。

结果

DLD 儿童的 PEGT、PDSS 和 MLU-w 得分低于 TD 儿童 ( p  < 0.001)。此外，在 DLD (r = 0.91) 和 TD 组 (r = 0.79) 中，PDSS 和 MLU-w 之间存在很强的相关性。DLD 组中 PEGT 与 MLU (r = 0.76) 和 PDSS (r = 0.78) 之间存在显着相关性，而在 TD 组中这些相关性不显着。

结论

考虑到 MLU、PDSS 和 PEGT 在 DLD 儿童中存在显着正相关，建议使用 PEGT 作为一种有效、可靠、准确的语法测试，可快速、轻松地进行，用于临床识别目的以及患有 DLD 的波斯儿童的筛查。