Argues that when students interrupt their thought flow during composition writing to edit language, syntax, or mechanics, the pauses obstruct fluency and dilute concentration. Use of the word processor for invisible composition is described to show how computers reduce time spent on composing and alter quantity and quality of time. (MBR)

Describes a study designed to determine whether the use of computer word processing would improve both the amount and quality of revision done by high school student writers. The effects of word processing on composition length and revision, and students' attitudes toward writing and word processing are discussed. (47 references) (CLB)