Interactive video is achieved by merging the two powerful technologies of microcomputing and video. Using television as the vehicle for display, text and diagrams, filmic images, and sound can be used separately or in combination to achieve a specific training task. An interactive program can check understanding, determine progress, and challenge viewers to inquire. Interactive video is an extremely versatile display medium which allows the use of two communication dimensions--both information delivery and response. Systems, however, are diverse in their capabilities. The key elements of an advanced interactive video system include an authoring facility, interactive presentation, management and analysis, and hardware. Hardware can include a microcomputer; optical videodisc, capacitance videodisc, or videocassette; and, in some systems, an interface controller, touch screen, and/or printer. Training applications have been varied, ranging from medical diagnosis to information delivery and response. Systems, however, are diverse in their capabilities. The key elements of an advanced interactive video system include an authoring facility, interactive presentation, management and analysis, and hardware. Hardware can include a microcomputer; optical videodisc, capacitance videodisc, or videocassette; and, in some systems, an interface controller, touch screen, and/or printer. Training applications have been varied, ranging from medical diagnosis to "surrogate travel." One effective use involves using the system to show the consequences of decisions. This report lists two references and includes figures illustrating interactive video system elements and a typical hardware configuration. (LMM)