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)

The effect of equations in scientific proofs on readers' comprehension was studied. Forty college undergraduates solved unfamiliar physics problems with or without a traditional series of related equations. Verbal proofs produced better responses than did equation-based proofs. Equations in proofs cause readers to shift attention away from…