VanDam Mark, Ide-Helvie Dana, Moeller Mary Pat
Center for Childhood Deafness, Boys Town National Research Hospital. 555 N. 30th St., Omaha, NE 68131, USA.
Clin Linguist Phon. 2011 Aug;25(8):689-704. doi: 10.3109/02699206.2011.552158. Epub 2011 Apr 1.
This work investigates the developmental aspects of the duration of point vowels in children with normal hearing compared with those with hearing aids and cochlear implants at 4 and 5 years of age. Younger children produced longer vowels than older children, and children with hearing loss (HL) produced longer and more variable vowels than their normal hearing peers. In this study, children with hearing aids and cochlear implants did not perform differently from each other. Test age and HL did not interact, indicating parallel but delayed development in children with HL compared with their typically developing peers. Variability was found to be concentrated among the high vowels /u, i / but not in the low vowels /ae, a / . The broad findings of this work are consistent with previous reports and contribute a detailed description of point vowel duration not in the literature.
这项研究调查了4岁和5岁听力正常儿童与佩戴助听器及人工耳蜗的儿童在单元音时长方面的发育情况。年幼的儿童比年长的儿童发出的元音更长，听力损失（HL）儿童比听力正常的同龄人发出的元音更长且更具变异性。在本研究中，佩戴助听器和人工耳蜗的儿童表现无差异。测试年龄和HL之间没有相互作用，这表明与发育正常的同龄人相比，HL儿童的发育是平行但延迟的。变异性集中在高元音/u, i/中，而不是低元音/ae, a/中。这项研究的广泛结果与之前的报告一致，并提供了文献中未有的单元音时长的详细描述。
