Intraindividual variability is a key component in explaining children's development and learning. Studying this type of variability on the micro-timescale can help us understand real-time constructive processes and the subsequent long-term development. The aim of this article is to study the process of children's understanding of…

Analysis of 65 children over a 4-year period on tests of operational and causal thinking offers support for Piaget's notion of stage progression. In kindergarten and grade one, the majority of children in this longitudinal study were between preoperational and the achievement stage of operational thought. By grade two, the majority had attained…

This study examined variables related to problem-solving approaches of young children, using the theoretical framework provided by Zigler and his collaborators in their work on outerdirectedness. Four aspects of outerdirectedness were examined: developmental trends, effects of different types of reinforcement, effects of task difficulty, and pride…

Designed for high risk children with learning needs in the development of academic, social, physical, or conceptual skills, this manual identifies and presents, in a developmental sequence, a preschool program for disadvantaged and migrant five-year-old children. The program's fundamental goal is to prepare each disadvantaged and/or migrant…