Provides evidence for developmental changes in the composition of the lexicon, reflecting a shift in emphasis from reference, to predication, to grammar. Findings show that the study of qualitative variation in lexical style is confounded by quantitative variation in rate of lexical development. Tables are appended. (Contains 42 references.) (JP)

The paper examines two types of texts, personal experience narratives and expository discussions, dealing with the shared theme of interpersonal conflict. Both were produced by the same 80 subjects, participants in a crosslinguistic study on developing literacy: gradeschoolers aged 9;0 to 10;0, twelve-to-thirteen-year-old junior high school…