Uncertainty was researched as a perceptual structure which mediates the transition from sensorimotor activity to language. The guiding notions are that the attentional system is geared to uncertainty from the beginning of life and that a speaker's language use is coordinated with this system as it emerges. (Author)

Children (2;10 to 4;7 years) taught passive sentences with forms employing animate patients could produce and comprehend passives better than children taught with forms employing inanimate patients. This indicates that "perspective" is the cognitive counterpart to the formal category of subject and that language acquisition is connected…

Examined effects of direct intervention on language learning. Using a toy manipulation task, 18 children aged 3;6 to 4;6 were systematically taught linguistic structures beyond their developmental grasp. Solid improvement was found in the experimental conditions; no significant improvement was noted in control conditions, showing that the language…

Children aged 3, 6, 9 and 12 years were asked to name and sort 25 different drinking vessels. Results showed three stages: (1) they ove rextend the term "cup"; (2) they focus only on certain perceptual properties; (3) they show growing awareness of functional properties and hence the vagueness of the boundary. (Author/RM)

The relationship of object permanence and classification skills to receptive and expressive language development was investigated in infants. Object permanence, classification, and parent-child verbal interaction ratings were about equally related to language comprehension functioning, while permanence was more strongly related to language…

Three experiments with children between 5 and 7 years are described. It is shown that nominal predication of an unknown word by a superordinate term enables young children to make appropriate inferences concerning its attributes. The results are discussed in relation to semantic development and reasoning in the young child. (Author/RM)

Discusses the inadequacies of the linguistic development theory called cognitive determinism and suggests instead the linguistic input hypothesis. Concludes that it is not either cognitive development or linguistic input that determines linguistic growth, but an interaction between them. (RM)

This article discusses a study designed to determine the order of acquisition of the two expressions "in front of" and "behind," using two featureless objects. (CFM)

This article clarifies the position taken in the Greenfield and Smith book (1976), including relation to speech act theory, and elucidates some general theoretical issues in early language development. (Author/NCR)

The written compositions of 11-year-olds in Great Britain's National Child Development Study were analyzed using the T-unit length as a measure of syntactic maturity and composition length as a measure of productivity. Results are discussed in relation to cognitive and linguistic development. (Author/RM)

This article discusses children's phonological limitations, including perceptual difficulties and productive difficulties. (NCR)

Three investigations of preschool children's comprehension of "younger" and "older" are discussed. Results suggest children focus on height in their initial hypotheses about meanings of the terms, ignoring age or function cues. These and findings about acquisition of antonyms are discussed in terms of recent theorizing about lexical-meaning…

Children's understanding of the nature of polar terms and comparative terms between the polar opposites is discussed. (CHK)

Two transitional phases in the child's early language development are described; the first occurs between prelinguistic vocalization and one-word speech and the second between one-word and patterned speech. Cognitive, linguistic and affective inputs to the acquisition of reference and syntax are discussed in the light of the transitional…

Investigates the development of past tense expressions in the speech of children from 1.6 to 2.6. It is shown that this development depends crucially on the child's cognitive construction of the time dimension, as described by Piaget. (Author/RM)