The 'root infinitive' phenomenon in child speech is known from major languages such as Dutch. In this case study, a child acquiring the Papuan language Nungon in a remote village setting in Papua New Guinea uses two different non-finite verb forms as predicates of main clauses ('root' contexts) between ages 2;3 and 3;3. The first root non-finite…

Two studies investigated syntactic productivity in three-year-old Mandarin speakers' use of verbs in the SVO and S"ba"OV constructions. In Study 1, children were taught novel verbs in one construction and assessed for their production in the other construction. Children produced verbs taught in the "ba" constructions in…

This study investigates the emergence and development of the discourse-pragmatic functions of the Japanese subject markers "wa" and "ga" from a usage-based perspective (Tomasello, 2000). The use of each marker in longitudinal speech data for four Japanese children from 1;0 to 3;1 and their parents available in the CHILDES…

Children start producing ["necessary and sufficient"] conditionals relatively late. Past counterfactuals (PCFs), for example "If she had shut the cage, the rabbit wouldn't have escaped", are particularly problematic for children; despite evidence of comprehension in the preschool years, children aged eleven are still making…

Analyzing the development of the noun-to-verb ratio in a longitudinal corpus of four Chintang (Sino-Tibetan) children, we find that up to about age four, children have a significantly higher ratio than adults. Previous cross-linguistic research rules out an explanation of this in terms of a universal noun bias; instead, a likely cause is that…

Corpora of child language are essential for research in child language acquisition and psycholinguistics. Linguistic annotation of the corpora provides researchers with better means for exploring the development of grammatical constructions and their usage. We describe a project whose goal is to annotate the English section of the CHILDES database…

LChildren pass through a stage in development when they produce utterances that contain auxiliary BE ("he's playing") and utterances where auxiliary BE is omitted ("he playing"). One explanation that has been put forward to explain this phenomenon is the presence of questions in the input that model S-V word order (Theakston, Lieven & Tomasello,…

The acquisition of reference involves both morphosyntax and pragmatics. This study investigates whether Dutch, English and French two- to three-year-old children differentiate in their use of determiners between non-specific/specific reference, newness/givenness in discourse and mutual/no mutual knowledge between interlocutors. A brief analysis of…

Parent report instruments adapted from the MacArthur-Bates Communicative Development Inventories (CDI) examined vocabulary development in children aged 0 ; 8 to 2 ; 6 for two Chinese languages, Mandarin (n = 1694) and Cantonese (n = 1625). Parental reports suggested higher overall scores for Mandarin- than for Cantonese-speaking children from…

Describes early word usage in four children aged 1.6 to 1.9. The research investigated the children's use of words whose referents are unknown to them. (Author/AM)

The use of the verbs "go" and "come" was examined in the spontaneous speech of seven two-year-olds. As verbs of motion, the words were used in the context of describing the contour of movement rather than as means of relating end-points of a journey. This is considered crucial in explaining children's difficulty in discriminating the verbs in…

Compares Lodge's (1979) examples of children's use of the past tense in pretend play with examples of the use of other moods and of modal auxiliaries. (AM)

Videotape recordings of interaction of 42 preschool children in same-sex dyads were coded and analyzed to see how these children used the word "no" in their interactions. Results showed that, although boys and girls used the word equally frequently, they were found to use it in different ways. (Author/JL)

Mental terms in mothers' and their childrens' speech at two and three years were studied to examine relationships between maternal and child use. Nineteen mother and child dyads were videotaped for 1 hour on each of 2 days when children were 2;0 and again for 2 1-hour sessions on separate days when they were 3;0. Mental terms were noted. (JL)

This study examined age differences in the extent to which children infer and use a speaker's interpersonal goal to understand speech acts and to examine age differences in the extent to which children select responses that carry implications appropriate to the speaker's interpersonal goal. (15 references) (JL)