Summarizes the results of five studies dealing with screen design for computer-based instruction (CBI) and provides suggestions for their application as well as future directions for research. Chunking, text density, and screen density are discussed as variables in screen design, and current research is described. (33 references) (LRW)

Learner preferences for varying screen density levels were examined using multiple screen designs (high external validity) and single screen designs (high internal validity). Subjects were 23 graduate and 23 undergraduate student volunteers. When viewing multiple screens for each design in Study I, they indicated the highest preference for medium…

Two variables that designers should consider when developing computer-based instruction (CBI) text screens are text density, which manipulates the context of the information presented, and screen density, which is a measurement of the amount of information presented at one time on the screen. A study on text density was designed to identify…

Proposes directions to help researchers balance instructional technology goals with the performance of well-designed and scientifically sound studies. Issues concerning the external validity of studies, use of media replications, and learner control as a means of adapting instructional strategies to individuals are emphasized, and designs for…

Relative effects on adult learners who received experimenter-provided elaborations or who generated personal elaborations, using strategies taught by means of detached versus embedded training, were examined in 80 employees in a professional-development course at a large corporation. Subjects were assigned to a control group, a group receiving…

Describes study that examined text density levels as a design variable in print and computer-based instructional presentations. The six treatment groups are explained, including low density, high density, and learner controlled density; attitude surveys and achievement posttests are described; and implications of the findings for instructional…

This study examined learner-control strategies for selecting problem context and level of instructional support on a computer-based mathematics unit on the metric system. Subjects were 240 sixth grade students assigned to 15 treatments. Performance was lowest under learner-control instructional support conditions even though subjects indicated…

This research project was designed to explore ways of making computer text presentations more readable as a way of compensating for the constraints that computers impose on the display of text as compared with print-on-paper displays, e.g., limited screen resolution and display area. Forty-eight undergraduate teacher education majors enrolled in…

A critical process in developing lessons for computer-based instruction (CBI) is to determine the manner in which information will be displayed on the screen, taking care not to ignore the computer's special display capabilities. The underlying assumption of this study was that reducing the density of text presentation would be effective for…

Summarizes three research studies on text and screen density variables in a computer based instruction (CBI) lesson. The first two studies investigated the effectiveness of low density text on lessons taught in print and CBI modes; the third study examined learner preferences for different screen densities. (43 references) (Author/LRW)