A model of the sources and consequences of mismatches between gestures and speech is presented that argues that the transitional knowledge state is the source of the mismatch and that such mismatches signal that a child is in a transitional state of concept acquisition and is ready to learn. (SLD)

Presents a theory of cognitive development that postulates a general cognitive processing system, a hypercognitive system governing self-regulation, and specialized structural systems responsible for processing different reality domains. Suggests five principles that serve as organizational pivots of developing cognition. Reports the results of…

Argues that the cognitive mechanisms in human creativity are, for the most part, sighted rather than blind. Reviews attempts to apply evolutionary ideas to psychology and argues that these ideas do not apply to the psychology of human creativity. An alternative sighted-variation framework is then proposed. (Author/CR)

Examines arithmetic and algebra knowledge from a cognitive perspective in an effort to determine what constitutes a pre-algebraic level of understanding. Presents results of a longitudinal study designed to investigate students' readiness for algebra. Proposes a model for the transition from arithmetic to pre-algebra to algebra. Contains 29…

Students, ages 12, 15, 18, and 23 (n=60 per group), wrote definitions for 16 abstract nouns. Responses were analyzed for Aristotelian style. There was an increasing tendency for students to mention the appropriate category to which a word belongs, core features of the word, and subtle aspects of meaning. (DB)

Explores relative developmental influences of age, number-sense, and context on primary school children's ability to estimate measures. Finds that, although number-sense improved with age, estimation did not; ability to perceive number relations influenced ability to estimate area; and estimation was more accurate in textbook exercises than in a…

Examines first graders' existing knowledge in relation to what they are expected to learn, by: (1) listing music vocabulary words appearing in music textbooks; (2) comparing oral vocabulary with vocabulary listed for music instruction; and (3) comparing frequency of selected music terms with frequency of same terms in general oral vocabulary. (DSK)

Notes that change in the moral and cognitive realms is a long-term historical process that includes progression and regression. Reconstructs the cognitive correlates of historical progress, using as examples the emergence of invariant numbers in Mesopotamia, the growth of logic and perspectivism in the early Middle Ages, and the rise of public…

Studied children's sex-category constancy judgments and accompanying explanations over three years. Found that constancy improvements were linked to explanations based on operational reasoning. Lower constancy scores were linked to explanations emphasizing gender-role norms and external appearances. Judgment-explanation relationships were stronger…

In discussing cognitive development in infants, the article focuses on how the infant brain is taught to learn, what the learning mechanisms are (events that happen at synaptic contacts between nerve cells that lead to learning and memory), what causes mental retardation, and what can be done to prevent or reverse mental retardation. (SM)

Building on the foundation of research on how critical thinking develops during college and on the extensive research on differences in the resident and commuter student experiences, this article explores aspects of the college experience that might be associated with cognitive development. Analyzes data from six institutions representing 326…

This study sought to differentiate pervasive developmental disorder not otherwise specified (PDDNOS) from similar nonautistic disorders on the basis of a cognitive deficit, theory of mind (ToM), which is the ability to infer mental states in others, a deficit highly prevalent in autism, a disorder similar to PDDNOS. Results suggest that children…

Addresses educational and policy issues related to use and interpretation of intelligence (IQ) tests in schools. Summarizes research on cognitive abilities and origins of individual differences in IQ. Considers implications of findings for educational and social policy. Discusses important issues related to practical application of IQ tests in…

Administered five Piagetian tests to 180 adolescents for comparison to similar samples from 1967 and 1972. Found that today's adolescents exhibited higher levels of cognitive development than did previous cohorts. Gain varied across tasks, being very large for combinatory thought but mixed for conservation. This acceleration of cognitive…

Demonstrates the need for a process-oriented, constructivist approach to understanding infants' categorization abilities. Suggests that emphasizing the distinction between perceptual and conceptual categorization has been an obstacle to forging an approach. Proposes a more microanalytic consideration of features available to infants at different…