Waring Rebecca, Eadie Patricia, Rickard Liow Susan, Dodd Barbara
a Audiology and Speech Pathology , University of Melbourne , Melbourne , Australia.
b Graduate School of Education , University of Melbourne , Melbourne , Australia.
Clin Linguist Phon. 2018;32(1):28-45. doi: 10.1080/02699206.2017.1326167. Epub 2017 Jun 7.
Previous research indicates that children with speech sound disorders (SSD) have underlying phonological memory deficits. The SSD population, however, is diverse. While children who make consistent atypical speech errors (phonological disorder/PhDis) are known to have executive function deficits in rule abstraction and cognitive flexibility, little is known about their memory profile. Sixteen monolingual preschool children with atypical speech errors (PhDis) were matched individually to age-and-gender peers with typically developing speech (TDS). The two groups were compared on forward recall of familiar words (pointing response), reverse recall of familiar words (pointing response), and reverse recall of digits (spoken response) and a receptive vocabulary task. There were no differences between children with TDS and children with PhDis on forward recall or vocabulary tasks. However, children with TDS significantly outperformed children with PhDis on the two reverse recall tasks. Findings suggest that atypical speech errors are associated with impaired phonological working memory, implicating executive function impairment in specific subtypes of SSD.
先前的研究表明，患有语音障碍（SSD）的儿童存在潜在的语音记忆缺陷。然而，SSD人群是多样化的。虽然已知那些持续出现非典型语音错误的儿童（音韵障碍/PhDis）在规则抽象和认知灵活性方面存在执行功能缺陷，但对于他们的记忆概况却知之甚少。16名有非典型语音错误（PhDis）的单语学龄前儿童与年龄和性别匹配的发育正常的同龄人（TDS）进行了个体匹配。对两组儿童进行了熟悉单词的正向回忆（指向反应）、熟悉单词的逆向回忆（指向反应）、数字的逆向回忆（口语反应）和接受性词汇任务的比较。在正向回忆或词汇任务上，TDS儿童和PhDis儿童之间没有差异。然而，在两项逆向回忆任务上，TDS儿童的表现明显优于PhDis儿童。研究结果表明，非典型语音错误与语音工作记忆受损有关，这意味着SSD的特定亚型存在执行功能障碍。
