This study draws on research and programs in Sweden, England, Canada, and the United States to examine communication interaction between a person using a communication aid and a person who is an able-bodied, natural speaker. It primarily addresses the child or adult with normal or near-normal cognitive abilities who uses augmentation and interacts with others in everyday situations. The interactional process between able-bodied, speaking children and adults is reviewed, followed by an analysis of differences in the interactional process when non-speakers are involved. The current knowledge base on interaction between aided communicators and others is reviewed, including a table of 36 relevant research studies. The document's observations about communicative interaction focus on the density of social interactions, the negotiation and exchange of meaning, people's attitudes toward augmentative communication devices and augmented speakers, and the impact of intervention and training on interaction. Appendices include: (1) descriptions of unpublished and in-progress research studies; (2) scripts for structured situations, developed to elicit specific communicative behaviors in physically disabled, non-speaking children; (3) several researchers' transcription and coding systems used in the study of communicative interaction between aid users and others; and (4) clinical observation forms and questionnaires used to evaluate communication interaction. (JDD)