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Bleses, Dorthe; Vach, Werner; Dale, Philip S. – Journal of Child Language, 2018
Vocabulary input frequency influences age of acquisition, and is also an essential control for investigating the influence of other factors. We propose a new method of frequency estimation, self-report. 918 Danish-speaking parents of 12-36-month-old children estimated their frequency of use of 725 words. Self-report was substantially correlated…
Descriptors: Vocabulary Development, Linguistic Input, Indo European Languages, Parent Child Relationship
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Makransky, Guido; Dale, Philip S.; Havmose, Philip; Bleses, Dorthe – Journal of Speech, Language, and Hearing Research, 2016
Purpose: This study investigated the feasibility and potential validity of an item response theory (IRT)-based computerized adaptive testing (CAT) version of the MacArthur-Bates Communicative Development Inventory: Words & Sentences (CDI:WS; Fenson et al., 2007) vocabulary checklist, with the objective of reducing length while maintaining…
Descriptors: Item Response Theory, Computer Assisted Testing, Adaptive Testing, Language Tests
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Dionne, Ginette; Dale, Philip S.; Boivin, Michel; Plomin, Robert – Child Development, 2003
Two cohorts of same-sex twin pairs were assessed on grammar and vocabulary. Findings indicated that vocabulary and grammar correlated strongly at 2 and 3 years in both cohorts, with a consistently high genetic correlation between vocabulary and grammar at both ages. Findings suggest that the same genetic influences operate for vocabulary and…
Descriptors: Correlation, Genetics, Grammar, Language Acquisition
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Marchman, Virginia A.; Martinez-Sussmann, Carmen; Dale, Philip S. – Developmental Science, 2004
The fact that early lexical and grammatical acquisition are strongly correlated has been cited as evidence against the view that the language faculty is composed of dissociable and autonomous modules (Bates & Goodman, 1997). However, previous studies have not yet eliminated the possibility that lexical-grammar associations may be attributable to…
Descriptors: Grammar, Language Skills, Bilingualism, Second Language Learning