Department of Psychology, University of Warwick, Coventry, UK.
Child Dev. 2022 Nov;93(6):1727-1743. doi: 10.1111/cdev.13815. Epub 2022 Jun 15.
This study investigates the influence of semantic maturation on early lexical development by examining the impact of contextual diversity-known to influence semantic development-on word promotion from receptive to productive vocabularies (i.e., comprehension-expression gap). Study 1 compares the vocabularies of 3685 American-English-speaking typical talkers (TTs) and late talkers (LTs; 16-30 months old; 1257 females, 1021 gender unknown; ethnicity unknown; data downloaded in 2018) and finds that LTs, with a longer preverbal phase, produced nouns with lower contextual diversity (R = .80), but verbs with higher contextual diversity (R = .13). Study 2 compares computational network growth models of semantic maturation and finds that verbs require more semantic maturation than nouns, and TTs produce words that are more semantically mature than LTs.
本研究通过考察语境多样性（已知会影响语义发展）对从接受性词汇到生成性词汇（即理解-表达差距）的单词促进作用，探讨语义成熟对早期词汇发展的影响。研究 1 比较了 3685 名美国英语母语者（TTs）和晚说话者（LTs；16-30 个月，1257 名女性，1021 名性别未知；种族未知；数据于 2018 年下载）的词汇量，发现具有更长的前语言阶段的 LTs 产生的名词具有较低的语境多样性（R =.80），但动词具有较高的语境多样性（R =.13）。研究 2 比较了语义成熟的计算网络增长模型，发现动词比名词需要更多的语义成熟，而 TTs 生成的单词比 LTs 更具语义成熟度。
