Extends and partially replicates a study comparing a segment from a high school history text with revised versions by linguists, composition teachers, and "Time-Life" writers. Finds that revisions by composition teachers were most effective. Suggests that textbook writers revise texts based on comments made by readers as they read. (RS)

Argues against the implicit use of readability formulas as guides to writing graded texts and urges experimental research to define the real factors constituting readability. (AEA)

Replicates an earlier study in which students read versions of passages rewritten by composition instructors, text linguists, or Time-Life writers. Finds that the composition instructor's revisions were the most effective. Points out methodological lessons learned. Comments on some conclusions on improving textbook design and the measures used in…

Presents five experiments examining the use of illustrations in the comprehension of technical material by students of good to very good reading ability. Concludes that technical content which lends itself to presentation as an illustration will be comprehended better as an illustration than as text and will be comprehended best of all if…

Uses a cognitive processing perspective to revise fifth grade social studies texts, to describe those revisions, and to demonstrate their effects empirically. Finds that students reading the revised text recalled more material and answered more questions correctly than did those reading the original text. Concludes that a text-processing approach…