In this longitudinal study, we investigated the factor structure and stability of early-life temperament in a German sample, using three measures developed within Rothbart's psychobiological approach. Temperament was measured using the Infant Behavior Questionnaire Revised (IBQ-R) at the ages of 6 and 12 months, the Early Childhood Behavior…

The aim of this study was to explore child and adolescent personality in the Russian culture, addressing gender and age differences, and to examine personality and family effects on children's Internalizing and Externalizing problems. Parents of 1,640 Russian children aged 3-18 years completed the Inventory of Child Individual Differences…

This translation of an article by Vygotsky traces the major theories of periodization and evaluates these views of child development. In addition, he advances his theory of periodization that is based upon the development of the child's personality. (ST)

This study was undertaken to determine the relative contribution of age, sex, and three stimulus features (board shape, block arrangement, and block shape) to perceptual accuracy on 39 board/block adaptations of Piaget's three-mountain task. (Author/SB)

Investigated how children's decisions about allocating money to story characters were affected by the relationship (friends versus strangers) among the characters. Children's rationales for their decisions showed that equality was the most salient principle for decisions at all ages and that older children provided rationales based on benevolence…

This document is an English-language abstract (approximately 1,500 words) of a three-part volume on the psychology of child personality development. In part one, the author shows that psychology is one of the most important scientific disciplines on which education is based, particularly because of its contribution to the scientific planning of…