Between their second and fifth years, young children learn approximately 15 new words a day. For every word the child hears, he or she must choose the correct referent out of an infinite set of candidates. An important problem for developmental psychologists is to understand the principles that limit the child's hypotheses about word meanings. A…

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…

This pilot study examined, from a dynamic systems perspective, changes in maternal/child discourse behaviors across repeated readings of a storybook. Four Caucasian children (2 boys, 2 girls), ranging in age from 2 years 7 months to 2 years 10 months, were videotaped reading unfamiliar storybooks with their mothers. The videotapes were…

Patterns of growth in one language in relation to growth in the other and also with respect to growth in both languages were studied in a group of 20 bilingual (English/Spanish) infants ages 10 to 30 months. The rate and pace of development were similar in both groups; differences among the bilinguals included their use of "referential"…

Because language delay tends to persist, is predictive of later learning problems, and is closely associated with psychiatric disorders, it is important to identify language delay as early as possible. In this study, language delay at age 2 was investigated in 502 children who attended physicians. Language assessment is not routinely carried out…

This paper reports the results of three investigations which examined the effects of computer-based language intervention with children who have severe handicaps. The first study looked at the vocabulary learning and use and growth in social communication of eight toddlers, comparing a computer-based approach with traditional intervention…

This study examined the effects of maternal directive and nondirective styles of interaction on the emergence of verbal communicative intent in toddlers, and sought to understand the association between maternal interaction styles and young children's pragmatic acquisition. During free play, maternal utterances of 12 mother-child dyads, with…

A study investigated children's difficulty in learning color words and attempted to determine whether the difficulty was perceptual, conceptual, or linguistic. The subjects were 24 two-year-olds, half with knowledge of color words and half without, and a similar control group. The experimental subjects were given conceptual and comprehension tasks…