Background: Within the same school class, it is usual to find children who differ in age by almost a full calendar year. Although associations between being relatively young and poor academic outcomes are well documented, and relatively consistent, the associations between being relatively young and psychosocial outcomes are less clearly…

Youth purpose has important implications for behavior and well-being, yet there is limited information about the types of purpose that young people pursue. The current study contributes insight into the content of purpose through a survey of 316 adolescents and young adults. Analyses of responses revealed that young people rated their purposes as…

Spatial reasoning, recognised as playing a critical role across STEM disciplines, is gaining prominence in mathematics education, not only as fundamental to mathematics, but also as embodied mathematical activity. In this paper, we discuss spatial reasoning and its embodiment in mathematics. We then present a systematic review of the topics as…

Sociologists have long recognized the relationships between family background and social class attainment. However, by neglecting the multiple ways in which families and parents provide advantages and the extent to which these advantages extend into adulthood, they may still be underestimating the role of families in the reproduction of class…

This paper reviews the literature on handedness in infants and reaching behavior in neonates and speculates on evolutionary reasons for the development of handedness. Modern studies have reliably detected handedness from the second half of the first year of life. One study found a preference for the right hand in unimanual tasks at 6.7 months.…

Reviews research on development of children's beliefs about intelligence; proposes that this development represents simultaneous processes of concept acquisition and theory building. Discusses research foci on children's definitions of intelligence, beliefs about the component structure of intelligence, criteria children use to evaluate ability,…

Reviews empirical studies of cognitive self-efficacy from childhood through old age, addressing issues of definition and measurement related to the self-efficacy construct. Integrates findings of research on self-efficacy and establishes generalizations regarding the relationship of self-efficacy to choice and goal-setting behaviors, a sense of…

This document presents a comprehensive review of the literature on the psychological effects of divorce from the preschool years through adulthood. Topics discussed include the developmental perspective on divorce through various age groups; divorce as an event or process; and the role of the mental health professional. This review provides an…

Compares concepts defining Kohlbergian stages of moral development with those associated with orders of hierarchical complexity determined with a generalized content-independent stage-scoring system. Finds that Kohlberg's sequence generally matches that identified with the scoring system and that contract and authority concepts match the concepts…

Imitation by infants functions in two ways: (1) to help the individual understand a puzzling event, and (2) to indicate mutuality with another person. Although changes in cognitive understanding influence the course of imitation, the occurrence of imitation in specific situations may be governed by the interplay of the two functions that imitation…

Presents an overview of the topics of planning and control to provide a context for the articles in this issue of the journal. Considers development across the life span, subgroup variations, and correlates. Also explores potential linkages between planning and control. (MM)

Treatment of sexually abusive youth was initially patterned after treatment of adult sex offenders. Article discusses the important differences in understanding the developmental progression and in treatment approaches that have evolved. Supports developmental perspective for treatment of youth which views abusive sexuality as evidence of deviant…

Discusses how friendships are transformed from equality-based exchange relationships during early childhood into need-based communal relationships during adolescence. Builds upon thesis that developmental changes in friendships can best be understood using both deep- and surface- structure levels of analysis. Examines cognitive representations of…

Demonstrates the need for a process-oriented, constructivist approach to understanding infants' categorization abilities. Suggests that emphasizing the distinction between perceptual and conceptual categorization has been an obstacle to forging an approach. Proposes a more microanalytic consideration of features available to infants at different…

Tested three models of children's mathematics word-problem solving based on developmental differences in quantitative conceptual structures: (1) quantitative relations represented as ordered array of mental objects; (2) numbers represented on two tentatively coordinated mental number lines; and (3) numerical operations represented as objects on…