Department of Speech Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Department of Speech Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
J Fluency Disord. 2021 Mar;67:105825. doi: 10.1016/j.jfludis.2020.105825. Epub 2021 Jan 5.
The purpose of the study was to examine the performance of Persian speaking children who stutter (CWS) and children who do not stutter (CWNS) on three nonword repetition tasks, while also focusing on which task and scoring method best differentiates the two groups of children.
Thirty CWS and 30 CWNS between the ages of 5;0 to 6;6 completed three nonword repetition tasks that varied in complexity. Each task was scored using two methods: nonwords correct and phonemes correct. Between-group differences in performance on each task were examined, along with disfluencies for CWS and the task and scoring method that best differentiated the CWS and CWNS.
The findings revealed that, across all three nonword repetition tasks, the CWS consistently produced fewer nonwords correct and phonemes correct than the CWNS group at virtually all syllable lengths. The CWS produced more disfluencies on longer nonwords than shorter nonwords in all three nonword repetition tasks. The nonword repetition task with lower wordlikeness and more phonologically complex items best differentiated the two groups of children. Findings further revealed that discriminative accuracy was highest for scoring based on the number of phonemes produced correctly.
Findings provide further evidence to suggest that CWS may have difficulty with phonological working memory and/or phonological processing.
本研究旨在考察讲波斯语的口吃儿童（CWS）和不口吃儿童（CWNS）在三项非词重复任务中的表现，同时重点关注哪种任务和评分方法最能区分这两组儿童。
30 名年龄在 5 岁 0 个月至 6 岁 6 个月的 CWS 和 30 名 CWNS 完成了三项非词重复任务，这些任务的难度不同。每个任务都采用两种方法进行评分：正确的非词和正确的音位。检查了每个任务中两组儿童之间的表现差异，以及 CWS 的不流畅程度，以及最能区分 CWS 和 CWNS 的任务和评分方法。
研究结果表明，在所有三项非词重复任务中，CWS 在几乎所有音节长度上产生的正确非词和正确音位都明显少于 CWNS 组。在所有三项非词重复任务中，CWS 在较长的非词上产生的不流畅程度高于较短的非词。具有较低词似度和更多语音复杂项目的非词重复任务最能区分这两组儿童。研究结果进一步表明，基于正确产生的音位数进行评分的判别准确率最高。
研究结果进一步表明，CWS 可能在语音工作记忆和/或语音处理方面存在困难。
