Infants' Lexical Processing Efficiency is Related to Vocabulary Size by One Year of Age

Lany, Jill ORCID: 0000-0001-8077-6244, Giglio, Michael and Oswald, Madeleine (2018) Infants' Lexical Processing Efficiency is Related to Vocabulary Size by One Year of Age. INFANCY, 23 (3). pp. 342-366.

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Abstract

<jats:p>By 15–18 months, infants’ skill in interpreting familiar words, or lexical processing efficiency (<jats:styled-content style="fixed-case">LPE</jats:styled-content>), improves substantially and is correlated with vocabulary size concurrently and several months later. Prior to this age <jats:styled-content style="fixed-case">LPE</jats:styled-content> is quite poor, and to date there is little evidence that it is related to vocabulary size. If this relation only emerges once infants have relatively good <jats:styled-content style="fixed-case">LPE</jats:styled-content>, and also know a substantial number of words, it could suggest that the processes that support the rapid growth in vocabulary commonly observed as infants approach age 2 may not yet be functional in the earlier stages of lexical development. However, using a modified <jats:styled-content style="fixed-case">LPE</jats:styled-content> task we found that 12‐month‐olds with better <jats:styled-content style="fixed-case">LPE</jats:styled-content> understood more words at that age and also produced more words several months later. These results suggest that meaningful individual differences in <jats:styled-content style="fixed-case">LPE</jats:styled-content> are already emerging by 12 months and may support lexical development across the second year.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	Pediatric, Clinical Research
Depositing User:	Symplectic Admin
Date Deposited:	18 Jan 2019 11:04
Last Modified:	15 Mar 2024 15:31
DOI:	10.1111/infa.12228
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3031115