Analysis of data on children's ideas about seeing and light is reported. Analysis is theoretically informed by Piagetian stage theory of genetic epistemology. Data produced by other researchers have been recoded to enable quantitative comparisons to be made with the survey data reported by Shayer and Adey (1981). Patterns in the data exposed by…

Presents research findings related to students' intuitive ideas about the concepts of chance to inform teachers how students form their concepts of probability and statistics. Discusses adolescents' conceptions of uncertainty, judgmental heuristics in making estimates of event likelihood, the conjunction fallacy, the outcome approach, attempts to…

The study examined methods of mathematical problem solving with 34 gifted and 34 average Dutch 10 year olds. Typical questioning protocols are diagrammed and results tabulated. Preliminary findings suggest the potential value of explicit teaching of advanced mathematical problem-solving skills to pupils of average ability. (DB)

Four experiments examined 8- to 12-month olds on search and nonsearch A not B tasks, a one-location task, and control tasks. Results indicated memory for where object was hidden and expectations of where it should be found. The effect occurred at delays at which infants made the A not B error when searching, and at a longer 15-second delay.…

Presents findings from an analysis of classroom discussions aimed at constructing shared knowledge. Demonstrates how students build up new concepts by renegotiating and sharing meanings and ideas during argumentative exchanges. Suggests that collaborative discourse-reasoning can support students' gradual mastery of discursive practices…

Examined whether toddlers would use information presented through video to solve a retrieval problem. Found that 2.5-year-olds were very successful at finding a hidden toy based on viewing a televised hiding event, but 2-year-olds were not. Substantially better performance was achieved by other 2-year-olds who either watched or believed they were…

Explores the idea that play is one of the fundamental processes by which children develop their understanding of the world by looking at play as an intrinsically motivated activity. (WRM)

A study examined the executive functioning, in particular the attentional set-shifting deficits in Australian individuals ages 6-20 with high-functioning autism (n=12) and Asperger's disorder (n=12). Results indicate that individuals with autism had a deficiency in shifting from local to global processing, however, this was not observed in…

Comparison of 30 children having reading disabilities and average to above-average nonverbal IQ with control children revealed that the average-IQ children with reading disabilities differed from chronological controls, but not reading age controls, mainly in the area of successive processing. Results support the critical role of successive…

This article presents data showing that two of the four forms of neuroplasticity, homologous area adaptation and map extension, are relevant to recovery from aphasia. It discusses factors related to neuroplastic activity during language recovery, including neurophysiological, subject, and environmental treatment variables. (Contains references.)…

A study examined whether exemplar-specific or prototype representations were primarily used by 28 children (ages 10-12) with mild mental retardation in a categorization task consisting of two groups of make-believe animals whose features were ill-defined. Results indicated the children were able to acquire and use both types of representations.…

This article reviews some current principles of brain research, including the idea that intelligence and its nurture is no longer restricted to the linear, rational cognitive function, but includes the integration of the cognitive (linear and spatial), emotional-social, physical, and intuitive. The principles of teaching and learning supported by…

Activation of change processes in cognitive capacity of 71 institutionalized adults with mental retardation in four age groups was investigated after the Instrumental Enrichment Program. The initial and final test scores of adults with Down syndrome were lower than those of adults with other forms of mental retardation. (Contains extensive…

Tests the hypothesis that two general developmentally-based levels of hypothesis-testing skills exist. Finds a positive relationship between level of hypothesis-testing skill and performance on a transfer problem involving the test of a hypothesis based on unobservable entities. Also finds a positive relationship between level of…

Asserts that developmental psychology's assumption that representation has nature of encoding is false; offers alternative model of representation based on the pragmatics of action. Argues that "frame problems" originate in the inherent requirement that encoding representations carry explicit content. Maintains that these problems impact…