Compared expressive vocabulary data from a systematic diary study of one child's early language development with data from longitudinal administration of the MacArthur Communicative Development Inventories spoken vocabulary checklist (CDI). The CDI underestimated the number of words in the diary study. Logistic curves were the best-fitting model…

To explore adjective language development and examine its relationship to seriation, several tasks were given to 40 children aged 4-8. Comprehension and production of adjective forms were measured--vocabulary, coordination, comparison. Ability to order objects by size was used to assess intuitive-level seriation. (CHK)

Children aged 2 1/2-4 were asked questions containing comparative and superlative forms of adjectives in pairs designated as unmarked/marked or positive/negative. Differences in frequency of correct responses were greater between unmarked/marked pairs than between positive/negative pairs. No evidence appeared for a marking explanation of adjective…

Ability to distinguish "ask" and "tell" in Spanish was studied with five groups of native Spanish speakers: adults, 7- and 10-year-olds in a full bilingual school and 7- and 10-year-olds in a non-total bilingual school. Increased age, bilingual schooling and presence of contextual clues enhanced performance. (CHK)

Examined cross-linguistic similarities and differences in early lexical and grammatical development among English- and Italian-speaking preschoolers. Parents completed surveys on vocabulary size, vocabulary composition, and grammatical complexity. No cross-linguistic differences surfaced in the composition of vocabulary in this age range. There…

An experiment on children aged 2 to 7 led to a critical evaluation of Piaget's implicit contention that young children use determiners anaphorically. It is suggested that the importance of young children's processing procedures on the linguistic environment has been underestimated in Piaget's interactive epistemology. (CHK)

Investigated simple, appearance-predicted, and reality-predicted labelling in 36 3-, 4-, and 5-year olds. An age-related appearance-reality shift was observed in simple labelling. It is argued that younger children maintained the one-label-per-predicate pattern because of inflexible encoding; older children did so because of better understanding…

Investigated individual variation in child vocabulary competence, evaluating mothers' sociodemographics, personalities, and vocabulary and children's' gender, social competence, and vocabulary competence. Specific aspects of children and mothers accounted for variation in child vocabulary knowledge and use. Child's gender and social competence and…

Investigated whether low-income mothers learned to interact with their preschoolers in ways that fostered narrative skills. Mothers of intervention children were encouraged to elicit questions, encourage longer narratives, and participate in narrative conversation. Assessment of children's pre- and post-intervention narrative and vocabulary skills…