Disentangling the Effects of Cognitive Development and Linguistic Expertise: A Longitudinal Study of the Acquisition of English in Internationally-Adopted Children

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Disentangling the Effects of Cognitive Development and Linguistic Expertise: A Longitudinal Study of the Acquisition of English in Internationally-Adopted Children

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Title: Disentangling the Effects of Cognitive Development and Linguistic Expertise: A Longitudinal Study of the Acquisition of English in Internationally-Adopted Children
Author: Snedeker, Jesse; Geren, Joy; Shafto, Carissa L.

Note: Order does not necessarily reflect citation order of authors.

Citation: Snedeker, Jesse, Joy Geren, and Carissa L. Shafto. Forthcoming. Disentangling the effects of cognitive development and linguistic expertise: A longitudinal study of the acquisition of English in internationally-adopted children. Cognitive Psychology.
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Abstract: Early language development is characterized by predictable changes in the words children produce and the complexity of their utterances. In infants these changes could reflect increasing linguistic expertise or cognitive maturation and development. To disentangle these factors, we compared the acquisition of English in internationally-adopted preschoolers and internationally adopted infants. Parental reports and speech samples were collected for one year. Both groups showed the qualitative shifts that characterize first-language acquisition. Initially, they produced single-word utterances consisting mostly of nouns and social words. The appearance of verbs, adjectives and multiword utterances was predicted by vocabulary size in both groups. Preschoolers did learn some words at an earlier stage than infants, specifically words referring to the past or future and adjectives describing behavior and internal states. These findings suggest that cognitive development plays little role in the shift from referential terms to predicates but may constrain children’s ability to learn some abstract words.
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:5149081
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