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Parents tune their vowels to the emergence of children’s words
Journal of Child Language ( IF 2.701 ) Pub Date : 2022-06-27 , DOI: 10.1017/s0305000922000289
Lotte Odijk 1 , Steven Gillis 1
Affiliation  

The aim of this study was to investigate the acoustic vowel space area in infant directed speech (IDS). The research question is whether the vowel space is expanded or remains constant in IDS. A corpus of spontaneous interactions of 9 dyads followed monthly from the age of 6 to 24 months was analyzed. The occurrences in the parents’ speech of each word that the children eventually acquired were extracted. The surface of the vowel triangle and the convex hull of all vowels were computed. The main result is that the development of the vowel space in IDS follows an inverted U-shaped curve: the vowel space starts relatively small, gradually increases as the child’s first word use approaches, and decreases again afterwards. These findings show that parents adapt their articulation to the evolving linguistic abilities of their child, and this adaptation can be detected at the level of individual lexical items.



中文翻译:

父母根据孩子单词的出现调整元音

本研究的目的是调查婴儿定向言语(IDS)中的声学元音空间区域。研究问题是IDS中元音空间是否扩大或保持不变。对 6 至 24 个月大的 9 个二人组的自发互动语料库进行了每月跟踪分析。孩子们最终学会的每个单词在父母的言语中出现的情况都被提取出来。计算了元音三角形的表面和所有元音的凸包。主要结果是,IDS中元音空间的发展遵循倒U形曲线:元音空间开始相对较小,随着孩子第一次使用单词的临近而逐渐增大,之后再次减小。这些发现表明,父母会根据孩子不断发展的语言能力调整他们的发音,并且这种适应可以在单个词汇的水平上检测到。

更新日期:2022-06-27
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