Department of Otolaryngology-Head and Neck Surgery, The Ohio State University Wexner Medical Center, Columbus.
Department of Psychology, The Ohio State University, Columbus.
J Speech Lang Hear Res. 2020 Apr 27;63(4):1254-1269. doi: 10.1044/2020_JSLHR-19-00315. Epub 2020 Apr 17.
Purpose This study examined vocabulary profiles in young cochlear implant (CI) recipients and in children with normal hearing (NH) matched on receptive vocabulary size to improve our understanding of young CI recipients' acquisition of word categories (e.g., common nouns or closed-class words). Method We compared receptive and expressive vocabulary profiles between young CI recipients ( = 48; mean age at activation = 15.61 months, = 4.20) and children with NH ( = 48). The two groups were matched on receptive vocabulary size as measured by the MacArthur-Bates Communicative Development Inventories (Fenson et al., 2006): Words and Gestures form. The CI group had, on average, 8.98 months of hearing experience. The mean chronological age at completing the MacArthur-Bates Communicative Development Inventories was 23.99 months ( = 5.14) for the CI group and 13.72 months ( = 1.50) for the NH group. Results The CI group had a larger expressive vocabulary size than the receptive vocabulary size-matched NH group. The larger expressive vocabulary size was associated with the group difference in social words but not with common nouns. The analyses for predicate words and closed-class words included only children who produced the target categories. The CI group had a larger proportion of predicate words than the NH group, but no difference was found in closed-class words in expressive vocabulary. Conclusions Differences found in expressive vocabulary profiles may be affected by spoken vocabulary size and their age. A further examination is warranted using language samples to understand the effect of language input on children's vocabulary profiles.
本研究通过比较人工耳蜗植入（CI）儿童和正常听力（NH）儿童的词汇特征，以评估其对词汇类别的习得情况，从而提高对人工耳蜗植入儿童词汇习得的理解。方法：我们比较了年轻的人工耳蜗植入者（ = 48；激活时的平均年龄为 15.61 个月， = 4.20）和具有正常听力的儿童（ = 48）的接受性和表达性词汇特征。两组儿童在接受性词汇大小上相匹配，即麦克阿瑟-贝茨交际发展量表（Fenson 等人，2006）：单词和手势形式。人工耳蜗组平均有 8.98 个月的听力经验。完成麦克阿瑟-贝茨交际发展量表的平均年龄为人工耳蜗组 23.99 个月（ = 5.14），NH 组为 13.72 个月（ = 1.50）。结果：人工耳蜗组的表达性词汇量大于与接受性词汇量匹配的 NH 组。较大的表达性词汇量与社会词汇的组间差异有关，但与普通名词无关。谓语词和封闭类词的分析仅包括产生目标类别的儿童。人工耳蜗组的谓语词比例大于 NH 组，但在表达性词汇中，封闭类词没有差异。结论：表达性词汇特征的差异可能受到口语词汇量及其年龄的影响。进一步使用语言样本进行检查，以了解语言输入对儿童词汇特征的影响是必要的。
