Noting that the use of all-capital print on microcomputer screens eliminates the configuration clues (ascending and descending letters that create the physical shape of the word) that help a reader recognize a word and read more quickly, a study was conducted to examine the effect of all-capital print versus standard mixed print on reading speed and accuracy. Material was presented on a PLATO computer terminal to 72 college students. The test presented four sections administered to students in random order: (1) paragraphs with five items on the screen at one time, all in capitals; (2) one item on the screen at one time, all in capitals; (3) paragraphs in regular mixed print; and (4) separate items in regular mixed print. As the subjects read the display, they touched the screen at the words that did not make sense in the paragraph. Each student's responses were monitored individually, with time required to read and respond to each item and accuracy of response recorded. The results indicated that the students read the mixed print in paragraphs and in sentences significantly faster than the all capitals, but their accuracy of response was greater for all-capital paragraphs than for mixed type. There was no difference in accuracy for sentences in either type of print. (HTH)