Several theoretical issues are reviewed which address the pictorial vs. verbal characteristics of media and provide a beginning framework for understanding how these influence learning. (STS)

Examines developmental changes in children's ability to comprehend visual and verbal narrative. Finds that understanding and integrating temporal aspects of a narrative is more difficult for young children when the story is presented visually than when presented verbally, whereas older children comprehend narratives in both formats equally well.…

Since structural dimensions of knowledge and learner contribute to preferred message structure, an understanding of structural relationships can aid in the more effective design of instructional messages. Five studies were conducted to explore these relationships. Knowledge structure was defined as the iconic representation of the body of…