University of Canterbury, New Zealand Institute of Language, Brain and Behaviour.
The Champion Centre, Christchurch, New Zealand.
J Child Lang. 2021 Jan;48(1):202-214. doi: 10.1017/S0305000920000136. Epub 2020 May 28.
Parent report data on 82 preschool children with complex neurodevelopmental disabilities including Down syndrome, dyspraxia, autism, and global developmental delay suggests communicative language use must reach a threshold level before vocabulary size becomes the best predictor of word combining. Using the Language Use Inventory and the MacArthur-Bates CDI (with sign vocabulary option), statistical modelling using regression trees and random forests suggests that, despite high linear correlations between variables, (1) pragmatic ability, particularly children's emerging ability to talk about things, themselves and others is a significantly better predictor of the earliest word combining than vocabulary size; and (2) vocabulary size becomes a better predictor of later word combining, once this pragmatic base has been established.
家长报告了 82 名患有复杂神经发育障碍的学龄前儿童的数据，这些儿童包括唐氏综合征、运动障碍、自闭症和全面发育迟缓。这表明，在词汇量成为单词组合的最佳预测因素之前，交际语言的使用必须达到一个阈值。使用语言使用清单和麦克阿瑟-贝茨 CDI（带手语词汇选项），使用回归树和随机森林进行统计建模表明，尽管变量之间存在高度线性相关性，但 (1) 语用能力，特别是儿童开始谈论事物、自己和他人的能力，是比词汇量更好地预测最早单词组合的指标；以及 (2) 一旦建立了这种语用基础，词汇量就成为更好地预测后期单词组合的指标。
