Investigates ways of prompting middle school science students to reflection. Contrasts two types of reflection prompts, generic prompts and directed prompts. Discusses the relationship between reflection types and student understanding of a science project. Describes the role of reflection in prompting multiple, complementary knowledge integration…

Investigated associations among constructive and destructive sibling conflict, pretend play, internal state language, and sibling relationship quality among sibling pairs with one kindergarten-age child. Found that specific resolution strategies were associated with conflict issues, aggression and internal state language, and that conflict issues…

Examines preschool children's understanding of the mathematical significance of unit size through problems that involve making judgments about the number of larger objects versus the number of smaller objects. Elicits children's judgments about the effects of object size both before and after the presentation of a series of demonstration trials.…

Language development was studied in 310 pairs of 4-year-old twins. Rotated factor analyses indicated presence of a general language factor (L) and a general nonverbal factor (NV). Moderate genetic influence was found for L and NV abilities. Bivariate genetic analysis estimated a genetic correlation of .63 between L and NV abilities. Results…

Asserts that play is closely tied to cognitive, socioemotional, and physical development. Defines play and gives reasons for its importance in early childhood education, using Parten's (1932) and Smilansky's (1968) categories of play, along with Vygotskian and Piagetian play theories. Discusses the teacher's role as facilitator of classroom play.…

Examines the development of young children's analysis of spatial patterns--specifically, hierarchical letter and geometric forms. Suggests that although children as young as four years of age demonstrated substantial analytic competence, their ability to integrate the parts of the spatial array to form a coherent whole was weaker and more easily…

A critical and comprehensive review of a variety of research programs investigating students' thinking and beliefs about the nature of knowledge and knowing leads to the identification of nine theoretical and methodological issues that need to be resolved in future research on epistemological theories. (SLD)

This study investigated mother-child dyads of differing social status engaged in fantasy play (children were age 54 to 80 months). Contrary to expectations, high-status dyads did not produce more or more complex utterances during fantasy play than low-status dyads. Low-status dyads were characterized by more negative affect and child behavior…

Examined claim that associations between emotional responses to maternal separation and cognitive performance would change with cognitive development over the first year. Emphasized the measurement of separation and reunion distress. Found that emotional responses and cognitive performance may be linked by individual differences in self-regulation…

Studied whether disturbances in mothers' metabolism (N=139) during pregnancy may exert long-range effects on neurobehavioral development of singleton progeny. Examined detailed pregnancy and perinatal records of mothers who experienced diabetes in pregnancy and intelligence tests of their offspring, administered at ages 7 to 11 years. All…

Studied effects of presence of novel social category on intergroup attitude formation in 6- to 9-year olds. Found that after four weeks of the functional use of color groups, children's attitudes showed consistent biases favoring their own group. Children with higher self-esteem showed higher intergroup stereotyping than did children with lower…

Recent research has established closer links between language, cognition, and social life than Piaget or Vygotsky imagined. Connections have been established between object permanence development and acquisition of disappearance words and the quantity and quality of child-adult joint attentional social interactions and children's early word…

Considers the mind of the epistemic psychologist, a constructivist knowledge creator within a scientific framework, guided by the social world of scientific institutions. Suggests that Piaget and Vygotsky shared respect for complexity of phenomena and were consistently developmental in their theories. A reconsideration of their common heritage…

Argues that the development of reasoning ability--a major goal of education--should start in the intermediate grades with curriculum materials that include simple proofs. How the proofs concept for developing reasoning skills works in mathematics instruction is explored. (GR)

Explores the interrelationships between metaphor, play, and drama, and the roles they play in the development of sociolinguistic competence. Focuses on the role of symbolic play in the development of metaphor and on the importance of metaphor in discourse. Also examines the nature of autism, a condition marked by an absence of both symbolic play…