A model of the character and mechanism for knowledge restructuring is presented and a model of educational practice designed to facilitate this form of restructuring is described. A broadened and integrated view of assessment and instruction called a portfolio culture, central to the educational model, is discussed. (KR)

Offers a theory of how commonsense reasoning about motion may develop. Takes as fundamental the basic categories: action, object, space, cause, time, and movement. Suggests that very primitive elements could combine to provide schemes of motion recognizable in psychological accounts of infancy and generate prototypes of and rules for motion. (DK)

Compared the effects of instruction using social interaction from a cognitive developmental perspective, and instruction with no peer interaction, on correspondence between sound and symbol as displayed through invented spelling. Children exposed to social interaction made greater gains than those exposed to individual work with teacher modeling.…

This paper highlights the need for research on the motor, cognitive, and psychological development of children with congenital limb deficiencies. Issues reviewed include optimal age for prosthesis fitting, training procedures, prosthesis usage, cognitive deficits, and vulnerability to psychosocial problems. (Author/DB)

Misconceptions about thinking skills instruction are that it will make students "smarter," raise achievement levels, and create better citizens. Reasonable expectations are that thinking skills instruction should be measured by short-term goals, a changed classroom atmosphere, concrete behavioral criteria, and the improvement of specific task…

Presents results from an Australian study examining whether children who use cognitive strategies in solving simple addition questions develop greater proficiency in addition than children who do not use such strategies. Describes the subjects, instruments, procedure, and instructional treatment. Concludes that the development of cognitive…

This article reviews Piagetian theory on formal operational thought, the relationship of psychometric intelligence and formal operational thought, the development of formal operational thought in gifted children, problems encountered with Piagetian theory and attempts to modify it, and implications of the post-Piagetian perspective for education…

Examines the relationship between young children's use of two languages and their cognitive development. Discusses the simultaneous and sequential acquisition of two languages; theories on cognition and language; and studies on the effects of bilingualism. Offers strategies for creating an effective language learning environment for young…

Interviews with skilled mine workers in Queensland, Australia, suggest that informal learning in the workplace enables authentic activities, access to experts, and sociocultural environment conductive to the development of expertise. Skilled work means technical competence in a context of sociocultural values. (SK)

Infants were exposed to symbolic gestures from their parents beginning at 11 months of age. In bimonthly interviews, mothers reported their infants' use of gestures and words. Results indicated a smaller but reliable difference between the onset of infants' use of symbolic gesture and the onset of their use of words than earlier research…

During a seven-year period, cognitive training by means of a pretest-posttest was used in a study of old adults' problem solving in regards to figural relations. Results showed significant training effects at each phase, with the largest gains occurring at the first phase. The performance of old adults after the last phase was significantly above…

Early-treated phenylketonuria (PKU) children and unaffected peers were evaluated on four executive function (EF) tasks and one nonexecutive task. The PKU children scored lower than unaffected children on EF tasks, but not on the nonexecutive task. The PKU children's composite EF score was correlated with concurrent and mean lifetime phenylalanine…

Infants' visual fixations were monitored while they viewed predictable and unpredictable sequences of stimuli. Analyses of anticipatory fixations indicated that by two months of age, infants form expectations for the reappearance of visual stimuli positioned opposite to each other. By three months, infants rapidly form expectations for asymmetric…

The study found that eight specifically language-impaired children (ages four and five) were more limited than eight normally developing children (ages two and three, matched for mean utterance length) in the use of both subject case marking and verb morphology. A relationship between the two types of usage was found in both groups of children.…

Computer technology, like older technologies such as writing, maximizes its potential for enriching intellectual performance when the individual is consciously engaged in the mind-machine partnership. Some change in performance occurs only in interaction with the tool; other change is more generalized and longer lasting. (CJS)