Abstract
The effects of manipulating discrete element error types and font types were determined on a reading performance task using a plasma panel display. Thirty male and 30 female college students attending Virginia Polytechnic Institute and State University participated as subjects. The results demonstrate that reading performance is significantly degraded by the random addition or removal of discrete elements or lines of elements. Subjects made more errors with lower case characters than with upper case characters. Similarly, more errors were also made in the discrete element failure condition than with horizontal line or vertical line failure. The Huddleston font was found to be better than the Lincoln-Mitre and the font used on the HP2621A.
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