Research supported by a grant from the National Science Foundation; reports results of experiments in general cognitive development of children tested for their comprehension of the words more'' and less'' (RS)

Presents a "procedural view" of the learning mind, arguing against previous theories citing physical properties as its basis. A more process-oriented view of information processing is offered, which describes "mind" in terms of skill in manipulating symbols, and the notion of skills is shown to provide a useful framework for accounting for…

In a study using preschool and elementary school children, the children's judgments of whether brief stories described valid instances of a concept shifted in a manner consistent with the authors' hypothesis that meanings typically develop from representations in which characteristic features predominate to those in which defining features become…

Children at three age levels were administered Schutz and Keislar's word-span task using nouns, verbs and functors as stimuli. (Author/RM)

Young children found it difficult to verify negative statements, but found affirmative statements, affirmative questions, and negative questions equally easy to deal with. It is proposed that children acquire the answering system earlier than the verification system, and use answering to verify statements before acquiring the verification system.…