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)

This study compared the cognitive development of 272 students in 7 graduate and 9 undergraduate social work programs. Students beginning their social work study at the graduate level scored significantly higher than students beginning social work study at the undergraduate level in their ability to see situations in more mature and complex ways.…

Discusses the development of a mathematics attitude model guided by the analysis of mathematical life-history interviews, Vygotsky's developmental theories, and research on attitudes toward mathematics. Explores implications for curriculum planning and development. (Contains 36 references.) (MDH)

In a preliminary ethnographic study, the developmental tasks of 23 first-year and 20 fourth-year medical students were assessed with reference to practical problem solving. Findings provide direct support for a relationship between practical intellectual development and life course contexts. (SLD)

Recent work on memory independence and memory interference in cognitive development has been conducted under fuzzy trace theory. Both memory-to-reasoning and reasoning-to-memory interferences were detected in 3 studies of inferences from stories by 94 4- and 5-year olds and 94 7- and 8-year olds. (SLD)

Arguing that cognitive development involves both conceptual and semiotic achievements, the authors emphasize the distinctness of semiotic issues and develop a differentiated appreciation of semiotic aspects of cognition, particularly in elementary mathematics cognition. Semiotic analyses are provided of differences between counting, adding, and…

Rebuts the arguments made by Suchting criticizing constructivism. (MDH)

Examined the effects of narrative statements used to evoke imaginal elaborations on children's recall. Found that children generated images that involved multiple referents and that children's memory performance was facilitated when their imaginal constructions were based on material created by themselves rather than on descriptions provided by…

Four considerations for fostering metacognitive development in children who speak languages other than English are (1) bilingual metacognitive development; (2) use of primary language as the language of instruction, with contextualized second-language content; (3) understanding of the sociocultural context; and (4) a problem-solving approach. (SK)

This study examined the relationships between computer use and the development of social metacognition in young children by using an intervention design. Preschool children were given three false-belief tasks; results showed a positive correlation between computer use and false-belief understanding. The children were then provided with a home…

Defends domain theory approach to children's moral development based on limitations of Piaget's original theory. Argues that Fowler's characterization of domain theory research omits important features and studies. Maintains that distinctions between morality and convention cannot be reduced to differences in perceptible harm and punishment; it is…

Explores understanding of chance measurement and how this develops over time through the analysis of response data collected in 1993, 1995, and 1997. Analyzes this data to document changes in levels of observed student outcomes using the Structure of the Observed Learning Outcome (SOLO) developmental model. Results indicate no improvements in…