I am a linguist with a particular interest in issues in semantics and pragmatics. My work centers around the way that the interpretation of what we say is influenced by context, both the nonlinguistic context and the discourse context. My dissertation, Presuppositional Indexicals, focused on nonlinguistic context sensitivity of the sort exhibited by deictic expressions (I, now, here, that, etc.). As a member of multiple research projects, I have also worked extensively on discourse structure and interpretation. My current research brings these two themes together to develop a model of different ways that the nonlinguistic context can influence the structure and interpretation of discourse. The influences go well beyond deixis to include various kinds of gestures but also non-communicative nonlinguistic events that can be exploited by conversational participants to enrich a linguistic message.