Describes a theory of cognition which posits specialized structural systems (SSSs) that enable individuals to represent and understand domains of knowledge. Three test batteries assessed 12-16 year olds' abilities to think combinatorially, form hypotheses, design experiments, and construct models or theories. Suggests that the results of tests…

Examined children's ability to settle causal relations and their capacity to make conclusions based on certain experiences and representations. Found that preschool children have a solid explanatory basis for their everyday life, within which facts are not generally accepted but are interpreted through a certain "logic," and the motives…

This document reports the results of a cross-cultural study on children's knowledge about the shape, gravity, movement, and location of the Earth and about the day/night cycle. The subjects of the study were elementary school students from Greece (N=90) and the United States (N=60). The results of the study showed that the children in both samples…