The social interaction laboratory, directed by Eugene H. Buder, Ph.D, is a specialized facility designed to support this focus area by acquiring video, audio, and physiological data from two persons engaged in conversation. The facility can be used for a variety of purposes, and has supported research in conversational management by persons with aphasia and persons who stutter, as well as collaborations in the areas of social psychology and discourse analysis. Buder’s particular interest is in understanding how the dynamics of rhythmic and melodic aspects of speech behaviors support communicative coordination.  This laboratory is located in the Speech and Hearing Annex.