An approach to cognitive development which builds upon Piagetian assumptions and methods but which takes into account specific characteristics of diverse symbol systems and media is outlined. Such an approach may account for several phenomena left unexplained by Piaget, integrate diverse strands of research, and suggest promising lines of…

Discusses the problems involved in matching differences between learners and differences between different types of media to improve the learning process. Thirty-eight references are cited. (CHC)

The failure of research on media to deal with media's symbol systems is discussed. Nature of symbol systems is described and related to cognition and learning. Symbolic elements used by media can facilitate the cultivation of mental skills in interaction with individual differences and depth of processing. (Author/RD)