Journal
COGNITION
Volume 206, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cognition.2020.104478
Keywords
Critical periods; Second language acquisition; Development; Emergentism
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Funding
- National Institutes of Health [R21AG063537, P50HD052117]
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The study found that around 17 years old is a critical period for the most effective acquisition of a second language, with the late childhood to late adolescence age range being crucial for learning an L2. The results can be conceptualized by emergentist models of language acquisition where behavior and brain interactively reorganize across development.
Hartshorne et al. (2018) used a very large sample in order to disentangle the effects of age, years of experience, and age of exposure from each other in context of second-language acquisition. Participants were administered an online test of English grammar. Results revealed a critical period ending around 17 years of age for the most effective acquisition of a second language (L2). The findings of a late cutoff indicate the age range of late childhood to late adolescence as crucial for learning an L2. In this piece, we argue that these results can be conceptualized by emergentist models of language acquisition in which both behavior and brain interactively reorganize across development.
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