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…

What are the sources of variation in the input, and how much do they matter for language acquisition? This study examines frequency variation in manner-of-articulation classes in child and adult input. The null hypothesis is that segmental frequency distributions of language varieties are unigram (modelable by stationary, ergodic processes), and…

The aim of this paper is to compare speech and co-speech gestures observed during a narrative retelling task in five- and ten-year-old children from three different linguistic groups, French, American, and Italian, in order to better understand the role of age and language in the development of multimodal monologue discourse abilities. We asked 98…

This study provides experimental evidence for preschool children's competence in basic information structure, with particular attention to the notions of topic and focus. It investigates their mastery of structural and definiteness distinctions to encode the information status of discourse referents, and seeks to distinguish linguistic competence…

This study examined information about adjective meanings available in adults' spoken discourse in the original 27 CHILDES corpora of typically developing English-speaking children. In order to increase the probability that adjectives would be novel to children to whom they were addressed, only "rare" adjectives were examined (those that occurred…

Presents an alternative definition of negative evidence, based on the idea that the unique discourse structure created in the juxtaposition of child error and adult correct form can reveal the child in contrast or conflict between the two forms. Findings reveal that children reproduced the correct irregular model more often and persisted with…

The present research investigated whether children's referential choices for verb arguments are motivated by pragmatic features of discourse referents across different developmental stages, not only for children learning null argument languages but also for those learning overt argument languages. In Study 1, the form (null, pronominal, or…

Inferences about linguistic competence in children are typically based on spontaneous speech. Children's use of complex object and adverbial noun phrase is seen as a reflection of pragmatic factors. Similar adult patterns indicate children's lack of subject clauses may be due to the nature of spontaneous speech. (CHK)

Through analysis of chimpanzee-human discourse, study shows that four chimpanzees exposed to humanly devised symbol system use partial or complete repetition of others' symbols. They do not produce rote imitations but use repetition to fulfill variety of pragmatic functions in discourse. Theories are advanced regarding meaning of two differences…

Examines recent attempts to explain children's word use and selection through recourse to information theory. It is concluded that information theory cannot account for the complexities involved in early word selection. (AM)

Recent studies have suggested that cultures vary in subtle ways in the talk about talk that children hear and learn to produce. Twenty-two three-year-old children and their families in respectively Oslo, Norway and Cambridge, Massachusetts were observed during mealtime with the aim of identifying talk-focused talk. The analysis distinguished talk…

The paper examines the nominal lexicon in later language acquisition as a window on linguistic knowledge and usage across childhood and adolescence. The paper presents a psycholinguistically motivated and cognitively grounded analysis of the distribution of ten semantic noun categories (the Noun Scale) across development, modality, and genre.…

The paper examines two types of texts, personal experience narratives and expository discussions, dealing with the shared theme of interpersonal conflict. Both were produced by the same 80 subjects, participants in a crosslinguistic study on developing literacy: gradeschoolers aged 9;0 to 10;0, twelve-to-thirteen-year-old junior high school…