Two experiments used a formal model of developmental discontinuity derived from catastrophe theory to test whether the transition from Rule I to Rule II on the balance scale task proceeds discontinuously from ages 6 to 10, focusing on five catastrophe flags. Found that bimodality, inaccessible region, hysteresis, and sudden jump were clearly…

Examines how theories of antioppressive education can help educators teach, supervise student teachers, and conduct research in ways that work against repetitions of privileged knowledge and practices. Shows how students may seek knowledge confirming what they already know and challenges educators to disrupt unconscious discourses. (Contains 39…

Examines research in folkbiology (commonsense understandings of plants and animals) to argue that several lines of comparative research are needed to understand the acquisition of folkbiology in particular and conceptual development in general. Asserts that comparisons are needed between children and adults within a given society, between adult…

Reviews evidence that gesture provides access to information children know but do not say. Argues that gesture may contribute cognitive change indirectly, by communicating spoken aspects of the learner's cognitive state to potential change agents; and directly, by offering the learner a simpler way to express and explore ideas that may be…

Focuses on the strategies young children (N=115) use to solve rectangular covering tasks before they have been taught area measurement. Children's solution strategies were classified into five developmental levels. Emphasizes the importance of understanding the relationship between the size of a unit and the dimensions of the rectangle in learning…

Data from the National Longitudinal Survey of Youth were used to examine the effects of welfare reform on children. Although effect sizes were generally small, the findings suggested the potential value of welfare-reform approaches that emphasized long-term human-capital development. Positive effects of support services on earnings were strongest…

Describes a theory of learning in which the brain is seen as a Darwinian machine. Argues that the generative heuristic underlying Darwinism offers considerable value for technology and science education. Contains 33 references. (Author/WRM)

Considers the child's development journey from a Montessorian perspective to explain how personal development recapitulates the historical complexity of human exploration and rational discovery in mental processes that connect the individual with the environment. (JPB)

Recent findings from neuroscience have confirmed the critical importance of the early years to the development of human intelligence. However, these findings may be misunderstood or misapplied by policy makers and educators. We must preserve a balanced view of early education that recognizes the importance of the mother-child relationship and the…

Debunks the "myth of the first three years"--notions about synaptic density changes, critical periods, and "enriched" or complex environments in early brain development. Neuroscientists say synaptic densities vary over the life span. There is no linear connection between number of synapses in the brain and brainpower or intelligence. (Contains 44…

This article reviews the life of the educational psychologist, Lev S. Vygotsky, as it affected the development of his ideas about the education of children with disabilities. These ideas include the necessity of considering not only the primary disability but also the secondary, tertiary and subsequent strata affecting the student's learning. (DB)

Notes that neurobehavioral problems from exposure to lead and other toxins can be observed at doses far below those that cause more obvious signs of exposure. Calls for refining tests of cognitive and developmental skills in exposed children, identifying additional contaminants and mechanisms for behavioral effects, and improving dose- repose…

Thirty-seven students who were blind or had low vision listed as many examples of 10 categories as they could and the prototype order of examples was scored. No differences between blind or low-vision students were found, but categories with which the students had a greater degree of direct sensory experience produced more examples and higher…

Examines one preschooler's conversation with author to determine what concepts educators consider "difficult" for this age group. Finds that concepts such as "infinity" and "negative numbers," typically avoided by primary educators, were brought into view in the task-based conversations. Argues that individual…

This study explored relationship between working memory (WM) and mathematical problem solving, comparing children with learning disabilities (LD) to chronologically age-matched and younger achievement-matched children on measures of WM, phonological processing, problem-solving, and word problem-solving accuracy. Found support for notion that…