Alternative approaches to analyzing individual differences in the rate of early vocabulary development
Alternative approaches to analyzing individual differences in the rate of early vocabulary development
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DOI：
10.1017/s0142716402003016
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发表时间：
2002-09-01
影响因子：
2.1
通讯作者：
Reznick, JS
中科院分区：
文献类型：
--
作者：
Bauer, DJ;Goldfield, BA;Reznick, JS
本文探讨了早期词汇发展速度的个体差异，特别关注性别差异。26名儿童从8个月、9个月或10个月大到14个月大，每月进行一次评估，使用麦克阿瑟沟通发展量表：单词和手势。本研究采用两种分析方法探讨了词汇理解和产出发展轨迹的个体差异。第一种涉及传统的参数统计，而后者利用分类程序。这两种技术都表明，女孩的词汇发展超过了男孩。归纳法还揭示了理解和表达的独特的“快”和“慢”轨迹的存在，而不仅仅是按性别区分的。表现出快速发展轨迹的病例主要是女孩，但也有几个男孩遵循这种发展模式。相反的模式出现了缓慢的轨迹。有很强的对应关系之间的生产和理解，但少数情况下集群到快速发展组的一个措施和缓慢组的其他。这些异常值的识别可能为探索语言发展机制提供重要工具。验证的聚类结果的基础上的前瞻性预测的外部标准变量，即，词汇发展在21个月，并复制一个独立的样本。
This paper examines individual differences in the rate of early lexical development with a specific interest in gender differences. Twenty-six children were assessed monthly from either 8, 9, or 10 months of age through 14 months of age, using the MacArthur Communicative Development Inventory: Words and Gestures. Individual differences in developmental trajectories of vocabulary comprehension and production were explored using two analytic approaches. The first involved traditional parametric statistics, while the latter utilized classification procedures. Both techniques demonstrated that the lexical development of girls outpaced that of boys. The inductive approach also revealed the presence of distinctive "fast" and "slow" trajectories for both comprehension and production that were not exclusively segregated by gender. Cases exhibiting fast trajectories were predominantly girls, but several boys also followed this developmental pattern. The opposite pattern emerged for the slow trajectories. There was strong correspondence between production and comprehension, but a few cases clustered into the fast development group on one measure and the slow group on the other. The identification of these outliers may offer an important tool for exploring mechanisms of language development. Validation of the clustering results was based on the prospective prediction of an external criterion variable, namely, lexical development at 21 months, and by replication on an independent sample.