Department of Speech-Language Pathology, Duquesne University , Pittsburgh, PA, USA.
Department of Communication Sciences and Disorders, University of Pittsburgh , Pittsburgh, PA, USA.
Clin Linguist Phon. 2020 Jul 2;34(7):634-651. doi: 10.1080/02699206.2019.1683231. Epub 2019 Oct 29.
Canonical babbling and volubility are common indicators of infant vocal development. If either indicator falls below values found in typical infants, it may be an early signal of a developmental disorder. The aim of this retrospective investigation was to examine home videos for the frequency of canonical babbles, age of canonical babbling onset, and overall volubility of eight infants later diagnosed with childhood apraxia of speech and compare these data to that of six typically developing infants as well as four infants later diagnosed with a speech sound disorder. Results revealed the infants later identified with childhood apraxia of speech used fewer canonical babbles, had later onset of canonical babbling, and fewer syllables per minute (volubility) than the comparison groups. These results suggest that infants later diagnosed with childhood apraxia of speech may be less adept in vocal exploration and in the production of canonical babbles, perhaps due to fewer opportunities for mapping articulatory movement with auditory speech sound outcomes.
经典的咿呀学语和喋喋不休是婴儿语言发展的常见指标。如果这两个指标中的任何一个低于典型婴儿的数值，可能是发育障碍的早期信号。本回顾性研究旨在通过检查家庭录像来评估 8 名后来被诊断为儿童言语运动障碍的婴儿的经典咿呀学语频率、经典咿呀学语开始年龄以及整体喋喋不休程度，并将这些数据与 6 名正常发育的婴儿和 4 名后来被诊断为言语障碍的婴儿进行比较。结果表明，后来被诊断为儿童言语运动障碍的婴儿使用的经典咿呀学语较少，经典咿呀学语开始的时间较晚，每分钟的音节（喋喋不休）也较少。这些结果表明，后来被诊断为儿童言语运动障碍的婴儿在声音探索和产生经典咿呀学语方面可能不太熟练，这可能是由于他们在发音运动与听觉语音结果之间进行映射的机会较少。
