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Salvaging a Childhood Language.

Terry Kit-Fong Au1, Janet S Oh, Leah M Knightly

  • 1Department of Psychology, University of Hong Kong.

Journal of Memory and Language
|May 23, 2008
PubMed
Summary
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Early childhood language exposure, whether speaking or overhearing, significantly improves adult second-language (L2) learning outcomes. Speaking a language before age seven enhances both phonology and grammar, while merely overhearing improves phonology.

Area of Science:

  • Second Language Acquisition
  • Developmental Linguistics
  • Cognitive Neuroscience

Background:

  • Early childhood exposure to a language is often associated with native-like pronunciation in adulthood.
  • The extent to which early exposure benefits other linguistic domains, such as grammar, remains less understood.
  • This research investigates the long-term effects of early childhood language experience on adult second-language (L2) learning.

Purpose of the Study:

  • To determine if early childhood speaking experience in Spanish, followed by a long period of non-use, impacts adult L2 Spanish acquisition.
  • To compare the phonological and grammatical proficiency of these re-learners with native speakers, childhood overhearers, and typical late L2 learners.
  • To ascertain whether benefits extend beyond phonology to grammatical competence.

Related Experiment Videos

Main Methods:

  • Study design involved four groups of Spanish learners: native speakers, childhood speakers (re-learners), childhood overhearers, and typical late L2 learners.
  • Participants were assessed on phonological (accent) and grammatical measures.
  • Statistical analyses were employed to compare group performance.

Main Results:

  • Both childhood speakers and childhood overhearers demonstrated more native-like accents compared to typical late L2 learners.
  • Childhood speakers significantly outperformed both childhood overhearers and typical late L2 learners on grammar measures, though not reaching native-like levels.
  • Early exposure to Spanish in childhood confers advantages in both pronunciation and grammar for adult re-learners.

Conclusions:

  • While passive childhood exposure (overhearing) enhances adult L2 phonology, active childhood use (speaking) provides additional benefits for grammar.
  • These findings highlight the critical role of active language production during early development for robust L2 acquisition.
  • The study suggests distinct benefits for phonological versus grammatical aspects of language learning based on the nature of early childhood exposure.