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 three experiments conducted with undergraduates to investigate important characteristics of mental models, their influence on task performance, and instructional strategies facilitating their formation. Results suggest that dynamic visual displays are more effective than static visual displays for teaching electronic troubleshooting…

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…