Conboy Barbara T, Thal Donna J
San Diego State University and University of California, USA.
Child Dev. 2006 May-Jun;77(3):712-35. doi: 10.1111/j.1467-8624.2006.00899.x.
Studies using the English and Spanish MacArthur Communicative Development Inventories demonstrated that the grammatical abilities of 20-30-month-old bilingual children were related more strongly to same-language vocabulary development than to broader lexical-conceptual development or maturation. First, proportions of different word types in each language varied with same-language vocabulary size. Second, individual changes in predicate and closed class word proportion scores were linked to growth in same-language vocabulary but not to total conceptual vocabulary. Third, increases in English utterance length and English and Spanish sentence complexity were related to growth in same-language vocabulary but not to growth in conceptual vocabulary. Increases in Spanish utterance length were linked to growth in both Spanish vocabulary and conceptual vocabulary. Possible mechanisms underlying these patterns are considered.
使用英文和西班牙文版麦克阿瑟沟通发展量表的研究表明，20至30个月大的双语儿童的语法能力与同语种词汇发展的关联，比与更广泛的词汇概念发展或成熟度的关联更为紧密。首先，每种语言中不同词类的比例随同语种词汇量的大小而变化。其次，谓语和封闭类词比例分数的个体变化与同语种词汇的增长相关，但与总概念词汇无关。第三，英语话语长度以及英语和西班牙语句子复杂度的增加与同语种词汇的增长相关，但与概念词汇的增长无关。西班牙语话语长度的增加与西班牙语词汇和概念词汇的增长都有关联。文中还考虑了这些模式背后可能的机制。
