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ERIC Number: ED308829
Record Type: Non-Journal
Publication Date: 1989-Feb
Pages: 20
Abstractor: N/A
Reference Count: N/A
Reconsidering the Research on CBI Screen Design.
Morrison, Gary R.; And Others
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 alternative methods for displaying computer text; it focused on the level of richness or detail presented in text displays, i.e., density level. A second study on text density was designed to extend the first study in several ways, e.g., use of larger samples; use of both immediate and delayed achievement posttests; and an extended examination of learner control. The first study was designed to determine how individual density levels were judged relative to one another by examining student preference for two different screen designs, while the primary interest in the second study was to determine replicability of the results of the first one when only the first screen of each density level was presented. In general, findings revealed that low-density format is a viable alternative to the standard text format used in printed materials; subjects indicated a strong preference for learning from high-density screens as opposed to low-density screens; and future research on CBI screen designs should investigate the use of text density and varying screen density in different content areas, and for tasks with different processing demands. (46 references) (CGD)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A