Previous work suggests that key factors for replicability, a necessary feature for theory building, include statistical power and appropriate research planning. These factors are examined by analyzing a collection of 12 standardized meta-analyses on language development between birth and 5 years. With a median effect size of Cohen's d = 0.45 and…

Two-year-olds use the sentence structures verbs appear in--"subcategorization frames"--to guide verb learning. This is syntactic bootstrapping. This study probed the developmental origins of this ability. The structure-mapping account proposes that children begin with a bias toward one-to-one mapping between nouns in sentences and participant…

Data from four recent language studies are examined to explore issues in concept-word relationships. Issues considered include: lexical development, bases of application, single-word functions, semantic domains, categorizing through naming, and concept matching as a model of word learning. (JMB)

Argues that inferring the intension (meaning) of children's words solely from the words' extension (referential scope) is problematic and describes two studies of the intension of children's words which involve a different approach. (JMB)

Preschoolers interpreted mental verbs with respect to their mental state in contrast to external state. These children were nontheless ignorant of definitive distinctions between the mental verbs, completely confusing cases of remembering, knowing, and guessing. (Author/RH)

Investigates the role of imitation by children in the acquisition of lexical items and factors influencing word acquisition by imitation. Imitation did not appear to facilitate subsequent spontaneous use of lexical items. Results are discussed in terms of conditions which influence imitative behavior in children. (JMB)

Selected spontaneous errors of word choice made between the ages of two and five by two children whose language development had been followed longitudinally were analyzed for clues to semantic developmnet. (JMB)

In a series of five experiments, young children (two- and three-year-olds) were presented with novel objects in which perceptual and functional features varied independently. Results indicate that early conceptualizations and word meanings are perceptually based when perceptual and functional features are independently available. (Author/RH)

Results imply that in early childhood education the language of test instructions and reading programs could be better geared to the child's linguistic competence. (Author)

Tests the hypothesis that mothers would label objects with adult-basic level terms when talking to other adults, but would label the same objects with child-basic terms when speaking to their young children who were just starting to talk, even though these labels may be very much "incorrect" by adult standards. (Author/RH)

Reveals that young children acquiring Mandarin Chinese differentiate subject from topic, even though Chinese is a "topic-prominent" language. Data are based on results of a standardized, elicited imitation test of 95 Chinese children in Taiwan. Subjects between 2 years, 6 months and 5 years of age responded to coordinate as well as…

Subjects ranging in age from 7 to 12 years selected correct story completion alternatives significantly more often when these alternatives were similes than when they were semantically equivalent metaphors, and when alternatives specifically denoted the referent of the metaphorical comparison than when the identity of the referent had to be…

Addresses questions about infant perceptual ability and the possibility of its decline as a function of development in the absence of specific experience. Compares English-speaking adults, Hindi-speaking adults, and 7-month-old infants on their ability to discriminate two pairs of natural Hindi (non-English) speech contrasts. (Author/RH)

Examines sex differences in vocalizations and play behaviors displayed toward an infant by preschoolers, preadolescents, and adults. Preschoolers showed less interaction than older subjects. Males talked and played less with the baby than did females at all ages; however, among adult subjects, no sex-role effects were found. (Author/RH)

Examined the use by children of the Novel Name-Nameless Category principle, under the framework that lexical principles are acquired in a developmental sequence. Results indicated that the particular principle was not available at the start of lexical acquisition but that exhaustive categorization ability and a vocabulary spurt occur…