Outlines two hypotheses about the reasons for obscurity in expository writing and notes that neither accounts for the general results of an exploratory study of the writing of postgraduates nor for the individual cases presented. Argues that a crucial factor is a person's implicit model of expository writing. (FL)

Noting that although a great deal of empirical research has been done to investigate the writing rules commonly taught, this paper points out that no one has yet constructed a deep theory of the relationship between cognition and writing that confirms the writing rules and explains how they work. The paper then uses theories and research in the…

The "informal process" for writing reports, which incorporates the mechanics of textbook theory but emphasizes the composition process, may be more successful for teaching fifth graders how to write reports than the traditional approach. This process recommends a number of nontraditional teaching methods. Student choice of topic should…