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…

Several text format variables were examined in an attempt to identify the ways in which these variables interact in specific design combinations. The variables include: heading location (embedded or isolated); line length (short or long); space between lines (single or double); paragraph indication (indented or spaced); use of running heads…

Library patrons evaluated two versions of a bibliographic record displayed on cathode ray tube terminal, one representing Library of Congress (LC) format, the other, one of 15 format variations. Patrons generally preferred side heading label and underlining to LC forms, and upper and lower case letters to lower case only. (EJS)