This chapter outlines the perspective which social psychology brings to the study of social interactions. It discusses some of the problems which have arisen in communicating with patients, discusses the interview process as a decision-making task, and presents the training methods which have been employed to improve communication skills. The consultation interview is a relatively formal means of communication and remains the most common means of interacting with the health service for most patients. Social encounters are preceded by working assumptions about the purpose of the meeting and the status and role of the participants. Speech is the main channel of human communication but non-verbal communication may often transmit emotions and attitudes which would rarely be spoken about out loud. In the early stages of a meeting location, distance, and posture can transmit important cues about power and attitude.