Research explores lexical and grammatical development influenced by linguistic factors in multilingual children, suggesting important implications for language learning.
The Norwegian CDI-I, CDI-II, and CDI-III have been used in research on typical and atypical acquisition of monoand multilingual children who speak Norwegian. The studies on typical acquisition have examined the influence of linguistic, family, and environmental factors on lexical development, the relationship between lexical and grammatical development, lexical development in bilingual children, and the correlation between CDI reports from different raters. The papers on atypical acquisition have addressed reliability, validity, and correlation between raters regarding language acquisition in children with autism, and lexical and grammatical acquisition in children with 5p– syndrome.
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Simonsen et al. (2026) studied this question.
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