Journal
CHILD DEVELOPMENT
Volume 87, Issue 6, Pages 1893-1908Publisher
WILEY-BLACKWELL
DOI: 10.1111/cdev.12554
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Funding
- [F32 DC10106]
- [R03 DC013638]
- [F31 DC012254]
- [R01 DC005650]
- [R01 HD053136]
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Although the size of a child's vocabulary associates with language-processing skills, little is understood regarding how this relation emerges. This investigation asks whether and how the structure of vocabulary knowledge affects language processing in English-learning 24-month-old children (N=32; 18 F, 14 M). Parental vocabulary report was used to calculate semantic density in several early-acquired semantic categories. Performance on two language-processing tasks (lexical recognition and sentence processing) was compared as a function of semantic density. In both tasks, real-time comprehension was facilitated for higher density items, whereas lower density items experienced more interference. The findings indicate that language-processing skills develop heterogeneously and are influenced by the semantic network surrounding a known word.
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