Defining developmental progressions can be an important step in identifying developmental precursors and mechanisms of change, within and across areas of reasoning. In one exploratory study, we examine whether the development of children's thinking about ownership follows a systematic progression wherein some components emerge reliably before…

Generic noun phrases, or generics, refer to abstract categories ("Dogs" bark) rather than particular individuals ("Those dogs" bark). Study 1 investigated how parents use gestures in association with generic versus particular reference during naturalistic interactions with their 2- and 3-year-old children. Parents provided…

Generics ("'Dogs' bark") convey important information about categories and facilitate children's learning. Two studies with parents and their 2- or 4-year-old children (N = 104 dyads) examined whether individual differences in generic language use are as follows: (a) stable over time, contexts, and domains, and (b) linked…

Southern Peruvian Quechua is an indigenous language spoken primarily in rural communities in the Peruvian Andes. The language includes a syntactic construction, "-paq", that expresses purpose or function, thus providing an opportunity to trace how parents and children with little formal education express teleological concepts. The…

Two strategies that children use to figure out new word meanings--attention to linguistic form class and the assumption of lexical contrast--were examined. It was found that very young children use both form class and lexical contrast to interpret new words. (PCB)

Three experiments investigated the processes by which 2-year-olds acquire the language to express category hierarchies. The first experiment studied how children use current linguistic knowledge to constrain the potential meanings of new words. This experiment compared interpretations of new words given to objects the children could already name…

Compared the proportions of nouns and verbs in early vocabularies of English- and Mandarin-speaking toddlers and their mothers. Found that Mandarin-speaking children had relatively fewer nouns and more verbs than English-speaking children. When reading books, children's vocabularies were dominated by nouns but not when playing with toys. Mothers…

Investigated overextensions in comprehension and production, using the preferential-looking model, in 99 children (ages 1;9 to 2;3) who were asked to find the referent that matched the label they were given in real and anomalous trials. Results confirm that overextensions in production are not diagnostic of children's underlying semantic…

Explored how mothers convey information about category structure during naturalistic interactions. Videotaped reading-aloud sessions between mothers and toddlers; coded their interactions for explicit and implicit discussion of animal and artifact categories. Found that mothers provided a rich array of information beyond simple labeling routines,…