Argues that mental images have functional properties similar to those of audiovisual media in that they can be intentionally and systematically used as the informational base for cognitive operations and as an aid to new learning. Experimental evidence is cited to support the claims. Nineteen references are cited. (Author/CHC)

Discusses previous pictorial research and its limited potential, and describes function-based research approach, which attempts to make findings relevant by identifying potential picture functions in terms of contributions to instructional processes and procedures broadly applicable to various objectives and strategies. Relevance of this approach…

Describes the fragmentary recall of aural and visual messages and discusses the implications for instructional design. Topics discussed include cognitive processes; the characteristics and selection of various media and the relationship to fragment processing skills; classroom activities based on fragmentary recall; and direction for further…

Discussion of how visual analogies aid students' understanding of math and science focuses on new types of representations that use computers. Topics addressed include understanding and cognitive performance; the role of representations in understanding, including examples; evidence of instructional effectiveness of new representations; and…