The precision of 12-month-old infants' link between language and categorization predicts vocabulary size at 12 and 18 months.
The precision of 12-month-old infants' link between language and categorization predicts vocabulary size at 12 and 18 months.
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DOI：
10.3389/fpsyg.2015.01319
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发表时间：
2015
影响因子：
3.8
通讯作者：
Waxman SR
中科院分区：
文献类型：
--
作者：
Ferguson B;Havy M;Waxman SR
婴儿最初在语言和物体类别之间的广泛联系逐渐被调整，在一岁结束时变得更加精确。在一项纵向研究中，我们询问了婴儿在12个月大时链接精度的个体差异是否与词汇发展有关。我们发现，在12个月大的时候，那些已经在标签和类别之间建立了精确联系的婴儿比那些联系还很宽泛的婴儿能理解更多的单词。六个月后，这种优势依然存在：在18个月时，在12个月时表现出精确联系的婴儿比在12个月时表现出广泛联系的婴儿知道并说出更多的单词。我们的结论是，12个月大的婴儿在语言和类别之间联系的准确性上的个体差异为他们的词汇发展提供了一个可靠的窗口。我们考虑了这种关系的几种因果解释。
Infants’ initially broad links between language and object categories are increasingly tuned, becoming more precise by the end of their first year. In a longitudinal study, we asked whether individual differences in the precision of infants’ links at 12 months of age are related to vocabulary development. We found that, at 12 months, infants who had already established a precise link between labels and categories understood more words than those whose link was still broad. Six months later, this advantage held: At 18 months, infants who had demonstrated a precise link at 12 months knew and produced more words than did infants who had demonstrated a broad link at 12 months. We conclude that individual differences in the precision of 12-month-old infants’ links between language and categories provide a reliable window into their vocabulary development. We consider several causal explanations of this relation.