Each language has its unique way to mark grammatical information such as gender, number and tense. For example, English marks number and tense/aspect information with morphological suffixes (e.g., -"s" or -"ed"). These morphological suffixes are crucial for language acquisition as they are the basic building blocks of syntax,…

We tested 12- and 18-month-old English-learning infants on a preferential-looking task which contrasted grammatically correct sentences using the determiner "the" vs. three ungrammatical conditions in which "the" was substituted by another English function word, a nonsense word, or omitted. Our design involved strict controls…

This article presents results from a large population-based study of early communicative development in Norwegian children using an adaptation of the MacArthur-Bates Communicative Development Inventories, comprising 6574 children between 8 and 36 months. Data were collected via the Internet. In accordance with similar studies from other languages,…

Provides evidence for developmental changes in the composition of the lexicon, reflecting a shift in emphasis from reference, to predication, to grammar. Findings show that the study of qualitative variation in lexical style is confounded by quantitative variation in rate of lexical development. Tables are appended. (Contains 42 references.) (JP)

Discusses the nature of speech perceptual capacities that infants possess, changes that come about with increased exposure to language, how growing understanding of native-language sound organization is used in developing word-segmentation strategies, and how developing word-segmentation abilities may facilitate discovery of grammatical…

Evaluates two developmental models incorporating innovations in prosodic theory using the phonological forms of one child's vocabulary documented for the first nine months of language production. Results indicate the relevance of the prosodic hierarchy in the early grammar as well as considerable early knowledge of prosodic structure below the…

The aim of this paper is to advance understanding of the theoretical basis for the difficulties many children who are deaf or hard of hearing face when learning spoken English grammar. The association between learning syntactical grammar and pre-verbal social interactions is explored and related to the effects of prelingual hearing loss. We…