Effects on comprehension of a text structure used primarily in science and mathematics to present principles and associated proofs were studied for 70 undergraduates in 3 experiments. Results suggest that the usual proof-first structure is more difficult than a principle-first structure and results in less complete text representation. (SLD)

A study involving 199 eighth graders in British Columbia assessed the use of conceptual, analogical, and outline methods of organization of textual material concerning computer crime and prevention. Findings indicate that simple presentation of a genuine advance organizer does not guarantee that students will use it effectively. (TJH)