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Portable Intermodal Preferential Looking IPL: Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism
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Lexical learning and lexical processing in children with developmental language impairments.

Kate Nation1

  • 1Department of Experimental Psychology, University of Oxford, , South Parks Road, Oxford OX1 3UD, UK.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|December 11, 2013
PubMed
Summary

Children with developmental language impairment (LI) often show significant vocabulary deficits. These challenges impact word learning, retention, and spoken word recognition, affecting overall language development.

Keywords:
impairmentlanguagelexical

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Area of Science:

  • Linguistics
  • Developmental Psychology
  • Speech and Language Therapy

Background:

  • Lexical skills are fundamental for language comprehension and production.
  • Developmental Language Impairment (LI) affects children and young people's language abilities.
  • Understanding lexical deficits is key to characterizing LI.

Purpose of the Study:

  • To review evidence of lexical-level deficits in children and young people with LI.
  • To explore the impact of these deficits on vocabulary knowledge and word learning.
  • To discuss the role of lexical factors in the nature of LI.

Main Methods:

  • Literature review of studies on lexical skills in LI.
  • Analysis of evidence from various language tasks, including on-line measures.
  • Examination of research on vocabulary breadth, depth, and new word learning.

Main Results:

  • Children with LI exhibit reduced vocabulary knowledge (breadth and depth).
  • Difficulties in learning and retaining new words are common in LI.
  • Emerging evidence suggests altered lexical competition in spoken word recognition in LI.

Conclusions:

  • Lexical deficits are a significant characteristic of developmental language impairment.
  • These deficits impact multiple aspects of language, from vocabulary to real-time processing.
  • Addressing lexical challenges is crucial for understanding and supporting individuals with LI.