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Does Exposure to Code-Switching Influence Language Performance in Bilingual Children?

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Bilingual children’s verbal working memory (WM) influences how code-switching affects their language skills. High WM enhances language with more code-switching, while low WM hinders it, showing cognitive capacity is key.

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Area of Science:

  • Psycholinguistics
  • Child Development
  • Cognitive Neuroscience

Background:

  • Bilingualism involves managing multiple languages, often leading to code-switching.
  • The impact of code-switching on bilingual children's language development is not fully understood.
  • Verbal working memory (WM) is crucial for language processing and executive functions.

Purpose of the Study:

  • To investigate the moderating role of verbal working memory (WM) in the relationship between code-switching exposure and language performance in bilingual children.
  • To determine if cognitive processing capacity influences the effects of code-switching on bilingual language skills.

Main Methods:

  • Recruited 174 Spanish-English bilingual children (mean age 7.78).
  • Administered English and Spanish language proficiency measures.
  • Assessed frequency of exposure to code-switching via parent reports and measured verbal working memory (WM).

Main Results:

  • Children with high verbal WM showed enhanced language ability with increased code-switching exposure.
  • Children with low verbal WM exhibited decreased language ability with increased code-switching exposure.
  • A significant interaction was found between verbal WM and code-switching exposure.

Conclusions:

  • Cognitive processing capacity, specifically verbal WM, is a critical factor in determining the outcome of code-switching exposure for bilingual children.
  • Code-switching can either facilitate or hinder language skills depending on the child's individual cognitive abilities.
  • Findings highlight the importance of considering individual cognitive differences in bilingual language acquisition research.