Investigated age differences from early childhood to adulthood in the capacity to understand--in a psychologically meaningful way--traits in stories wherein main characters perform actions based on a positive, negative, or incidental motive that result in an emotional consequence for another character. Found that even 5- to 6-year-olds made trait…

Examined preschool children's inferences about the likely appearance of a target figure based on information about the figure's occupation or personality traits. Without explicit gender-category information, girls' performance on gender-consistent and gender-inconsistent trials was equivalent; boys performed better on same-sex attributes. With…

Examines the nature of prior mathematical knowledge that facilitates the construction of useful problem representations in the domain of geometry. Indicates that high achievers build schemas that are qualitatively more sophisticated than low achievers, which in turn helps them construct representations that are conducive to understanding the…

The literature on how and when children acquire temporal concepts is reviewed in the context of the acquisition of time concepts by deaf children. The stages at which children acquire concepts of clock, calendar, historical time, and chronology, and effects of language acquisition are discussed. A more formal structure of temporal concepts in the…

Fifteen adolescents with and 15 without mental retardation were compared on their tendency to show the representational momentum effect when viewing a stimulus array that implied motion. Participants with mental retardation showed the representational momentum effects as did the others, although the magnitude of the memory shift was smaller.…

Two experiments used object-manipulation tasks to examine whether one- to two-year-olds form superordinate-like categories by attending to object parts. Findings indicated that 14- and 18-month-olds behaved systematically toward categories with different, but not matching, parts. Without part differences, none formed superordinate categories.…

Three experiments examined children's understanding of functional relations in economics. Found that preschoolers understood effects of demand and second graders also understood effects of supply, but even fourth graders often failed to understand motivation and morality effects. Fourth but not second graders explained how motivation and morality…

A study examined the effects of play-group composition (segregated or integrated) and category of play materials (functional, constructive, or dramatic) on cognitive level of play and language use of 24 preschool children with developmental disabilities. There were no effects for play-group composition, but category of play materials significantly…

Gender and lowest stage of cognitive development were found to significantly contribute to the variance in lower levels of white racial identity in a study of white counselor trainees (N=82). Significant relationships were not found between the higher stages of cognitive development and higher levels of white racial identity. Examines gender…

Maintains that Rogoff's work has implications for supporting the development of a well-designed "Practical Life" environment in Montessori schools. Questions the appropriateness of the concept of proximal development for the Montessori approach. Concludes that the book reaffirms one's commitment to the Montessori perspective. (KB)

Proposes an account of the development of temporal understanding, linking it with episodic memory development. Distinguishes between ways of representing time in terms of frameworks involved; describes perspectival and nonperspectival frameworks and those representing recurrent sequences or particular times. Describes emergence of new kinds of…

A seminar to prepare students for learning organizations was based on Perry's theory of intellectual and ethical development. Developmental assignments were designed to assist cognitive growth and self-awareness. Challenges arose from differences in group composition (younger or mixed-age students) and the ethics of attempting to alter students'…

Responds to Mandler's critique of authors' view of infant categorization. Maintains that their view of infant categorization is not characterized by a shift from one type of category to another but by gradual changes in the kinds of information infants can use in forming categories. Clarifies position regarding a single categorical process using…

Compared the mismatch-negativity (MMN) component of auditory event-related brain potentials to explore the relationship between phonological short-term memory and auditory-sensory processing in 7- to 9-year olds scoring the highest and lowest on a pseudoword repetition test. Found that high and low repeaters differed in MMN amplitude to speech…

This study tested three hypothesized mechanisms through which explanations might facilitate problem-solving strategy generalization in kindergarteners through second graders. Results suggested that explanations facilitated generalization through the creation of novel goal structures that enabled children to persist in use of the new strategy…