Rehabilitation Research Center, Department of Speech Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
Department of Linguistics, Institute for Humanities and Cultural Studies, Tehran, Iran.
Appl Neuropsychol Child. 2024 Jul-Sep;13(3):191-201. doi: 10.1080/21622965.2022.2145198. Epub 2022 Nov 21.
This study aimed to develop a screening test for children suspected of developmental language disorders (DLD). The study was conducted in six steps. In the first two steps, we collected 34 sentences for the sentence repetition (SR) subtest, and 40 non-words for the non-word repetition (NWR) subtest, respectively. Experts determined the content validity in the third step and 19 sentences and 19 non-words were selected. In the fourth step, we draw simple pictures for the SR subtest. In the fifth step, two pilot studies were conducted on 30 and 35 Persian-speaking children aged 4.5-5.5 years, respectively. After calculating the discrimination index of the items, we removed items with the discrimination index less than 0.3. Nineteen sentences and 14 non-words remained in this step. In the sixth step, 92 typically developing (TD) children aged 4.5-5.5 and 10 children suspected of DLD were recruited. Then, we removed some items and evaluated the construct validity and reliability of the final form of the Persian Grammar-Phonology Screening Test (PGPST).The final form of the PGPST consisted of 16 sentences, and 11 non-words were developed. The correlation between the two subtests was 0.29. Children suspected of DLD in SR ( = .001) and NWR ( = .007) performed significantly worse than the TD children. The correlation between the two administrations of the test was 0.74 and 0.71, respectively, for SR and NWR. Cronbach's alpha was also 0.84 and 0.86 for the SR and NWR subtests, respectively. The PGPST is a quick and brief screening test with acceptable validity and reliability.
本研究旨在为疑似发展性语言障碍（DLD）的儿童开发一种筛查测试。研究共分为六个步骤。在第一和第二步中，我们分别收集了 34 个句子用于句子重复（SR）子测试，以及 40 个非词用于非词重复（NWR）子测试。在第三步中，专家确定了内容效度，选择了 19 个句子和 19 个非词。在第四步中，我们为 SR 子测试绘制了简单的图画。在第五步中，我们分别对 30 名和 35 名年龄在 4.5-5.5 岁的波斯语儿童进行了两项预试研究。在计算项目的鉴别指数后，我们删除了鉴别指数小于 0.3 的项目。在这一步骤中，还剩下 19 个句子和 14 个非词。在第六步中，我们招募了 92 名 4.5-5.5 岁的典型发育（TD）儿童和 10 名疑似 DLD 的儿童。然后，我们删除了一些项目，并评估了波斯语语法-音韵筛查测试（PGPST）最终形式的建构效度和信度。PGPST 的最终形式包括 16 个句子和 11 个非词。两个子测试之间的相关性为 0.29。在 SR（ = .001）和 NWR（ = .007）中，疑似 DLD 的儿童的表现明显差于 TD 儿童。测试的两次施测之间的相关性分别为 SR 和 NWR 的 0.74 和 0.71。SR 和 NWR 子测试的克朗巴赫α系数分别为 0.84 和 0.86。PGPST 是一种快速而简短的筛查测试，具有可接受的有效性和可靠性。
