Linguistically Informed Acoustic and Perceptual Analysis of Bilingual Children's Speech Productions: An Exploratory Study in the Jamaican Context.
Linguistically Informed Acoustic and Perceptual Analysis of Bilingual Children's Speech Productions: An Exploratory Study in the Jamaican Context.
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DOI：
10.1044/2022_jslhr-21-00386
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发表时间：
2022-07
期刊：
影响因子：
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通讯作者：
M. León;Karla N. Washington;Victoria S. McKenna;K. Crowe;Kristina Fritz
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作者：
M. León;Karla N. Washington;Victoria S. McKenna;K. Crowe;Kristina Fritz
目的本研究的目的是表征讲牙买加克里奥尔语（JC）和英语的双语学龄前儿童的语音声学特征。我们比较了标准方法与文化响应方法表征语音制作。将学龄前儿童的言语产生与来自同一语言社区的成人模型进行比较，以提供jc -英语使用者特有的典型言语模式的验证证据。方法对使用发音和音韵学诊断评估（DEAP）发音子测试收集的数据应用两种方案：(a)标准化的DEAP方案和(b)反映牙买加后克里奥尔（英语到克里奥尔）连续体的文化和语言适应方案。这些方案用于分析说jc -英语的学龄前儿童（n = 119）和成人（n = 15）的反应。使用声学（声音开始时间、全词持续时间和元音持续时间）和感知（辅音正确修正的百分比和响应频率）测量来分析反应。结果：文化反应方案捕获了后克里奥尔连续体中产生的频率和声学差异的变化，与儿童和成人的“标准”目标反应相比，“其他”反应的数量更高。与儿童相比，成人的整个单词持续时间更短，并且在初始爆破时表现出更一致的前置音。结论：采用文化响应方法，包括了解后克里奥尔连续体中产生的差异和来自同一语言社区的成人模型，可以提高jc -英语学龄前儿童言语特征的生态效度。语音的声学特性应该作为描述双语发展和区分差异和障碍的手段进行进一步的研究。补充材料https://doi.org/10.23641/asha.20249382。
PURPOSE The aim of this study was to characterize speech acoustics in bilingual preschoolers who speak Jamaican Creole (JC) and English. We compared a standard approach with a culturally responsive approach for characterizing speech sound productions. Preschoolers' speech productions were compared to adult models from the same linguistic community as a means for providing confirmatory evidence of typical speech patterns specific to JC-English speakers. METHOD Two protocols were applied to the data collected using the Diagnostic Evaluation of Articulation and Phonology (DEAP) Articulation subtest: (a) the standardized DEAP protocol and (b) a culturally and linguistically adapted protocol reflective of the Jamaican post-Creole (English to Creole) continuum. The protocols were used to analyze responses from JC-English-speaking preschoolers (n = 119) and adults (n = 15). Responses were analyzed using acoustic (voice onset time, whole-word duration, and vowel duration) and perceptual (percentage of consonant correct-revised and response frequencies) measures. RESULTS The culturally responsive protocol captured variation in the frequency and acoustic differences produced in the post-Creole continuum, with higher amounts of "other" responses compared to "standard" target responses for both children and adults. Adults' whole-word durations were shorter and showed more consistent prevoicing during initial plosives compared to the children. CONCLUSIONS Applying culturally responsive methods, including knowledge of the variation produced in the post-Creole continuum and with adult models from the same linguistic community, improved the ecological validity of speech characterizations for JC-English preschoolers. Acoustic properties of speech should be investigated further as a means of describing bilingual development and distinguishing between difference and disorder. SUPPLEMENTAL MATERIAL https://doi.org/10.23641/asha.20249382.