An empirically-based theory is proposed that relates media's most essential modes of presentation--their symbol systems--to modes of cognitive representation and to the acquisition of knowledge. This book draws upon scholarship in such areas as the study of symbol systems, cognition, cognitive development, psycholinguistics, and mass…

This study reports on the historical conceptualization among Finnish 12-13 year-olds who were given a projective task to yield historical thinking. The case study examines expressions the subjects used and which were studied qualitatively, using "chunks of meaning" as units of analysis, in regard to both their meaning- content and their…