Purdue University, West Lafayette, IN.
Am J Speech Lang Pathol. 2018 May 3;27(2):751-764. doi: 10.1044/2018_AJSLP-16-0164.
This study sought to expand understanding of the impact of cochlear implantation on grammatical acquisition by comparing young children who have vocabularies of comparable size. Two research questions were investigated: (a) Do young cochlear implant (CI) recipients have grammatical skills comparable to those of children with normal hearing (NH) matched by spoken vocabulary size? (b) Do these groups show associations between vocabulary size and grammatical measures?
The participants included 13 CI recipients at 24 months postactivation (chronological ages = 33-60 months; M = 44.62) and 13 children with NH between 27 and 30 months old (M = 20.69). The 2 groups were matched by their vocabulary size. Four grammatical outcomes were analyzed from the MacArthur Communicative Development Inventory (Fenson, Marchman, Thal, Dale, & Reznick, 2007) and 20-min language samples: (a) grammatical complexity, (b) mean length of utterances, (c) tense marker total, and (d) productivity scores.
The 2 groups showed comparable grammatical skills across the 4 measures. Consistently significant associations between vocabulary size and grammatical outcomes were found in the CI group, with fewer associations in the NH group.
The 2 groups showed similar grammatical abilities. The young CI recipients appeared to be following a typical pattern of linguistic development.
本研究通过比较词汇量相当的年轻耳蜗植入（CI）儿童和正常听力（NH）儿童，旨在深入了解人工耳蜗植入对语法习得的影响。研究提出了两个问题：（a）植入人工耳蜗的儿童是否具有与词汇量匹配的 NH 儿童相当的语法技能？（b）这些群体的词汇量与语法测量之间是否存在关联？
参与者包括 13 名人工耳蜗植入后 24 个月的儿童（接受激活时的年龄为 33-60 个月，平均年龄为 44.62 岁）和 13 名 27-30 个月大的 NH 儿童（平均年龄为 20.69 岁）。两组按词汇量匹配。从麦克阿瑟交际发展量表（Fenson、Marchman、Thal、Dale 和 Reznick，2007）和 20 分钟的语言样本中分析了四个语法结果：（a）语法复杂度，（b）话语平均长度，（c）时态标记总数和（d）生产力得分。
两组在四个测量指标上的语法技能相当。在 CI 组中，词汇量与语法结果之间存在一致的显著关联，而在 NH 组中关联较少。
两组显示出相似的语法能力。年轻的 CI 接受者似乎遵循了典型的语言发展模式。
