Four conference papers on discourse are included. In "How Context Contributes to the Interpretation of Temporal Expressions," Carlota S. Smith provides a summary analysis of the temporal interpretation of English sentences. Many sentences are shown to be semantically incomplete; it is argued that information from neighboring sentences is used to compelete their interpretation. "Discourse Structure from an Artificial Intelligence Point of View" by Steven Rosenberg presents an overview of a theory of discourse structure that relies on a set of cues to provide links between sentences of the discourse. The frequency with which these cues are found in newspaper articles is examined. In answering the question, "Can Rules Be Devised to Make Implicit Inter-sentence Case Relationships Explicit?" Patrick J. Finn proposes models in which language cognition is in part a process of assigning values to variables that correspond to universal, innate concepts that identify certain types of judgments. It is hypothesized that inferences arise from commonality of features of given and missing case values. Finally, in "Discourse Processes in Elementary School Children," William J. Russell and David Snow report on a study of the development of pronominalization in the speech of native English and Spanish speaking elementary school children. (JB)