Conceptual modeling of databases is a complex cognitive activity, particularly for novice database designers. The current research empirically tests a new pedagogy for this activity. It examines an instructional approach that stresses visualizing gradual transitions between levels of abstraction in different hierarchic levels of a relational…

This article examines the connections between information overload and time pressure, as well as between organizational patterns as they are perceived by school faculty, contingent upon the level of the specific educational framework (elementary-high school) and teachers' roles within the school. The participants were 539 teachers. The main…

Describes a study of the mental processes college students use in thinking about speed. Piagetian-type tasks dealing with speed, time, and distance were used in an individual interview format. Males outperformed females on tasks relating to speed, but not on the other tasks. (TW)