How does each model of communication build upon the work of previous theories? What is missing from the early models?Each model of communication builds upon the work of previous theories. Linear model presents interpersonal communications in most fundamental form. This states that communication is process, where a stage should be completed before going to next. Idea of the interactive model is which every person holds specific areas of experiences unique to their history of the communication. Transactional model of the interpersonal communication emphasizes dynamism of interpersonal communications and many roles people suppose during process. The interpersonal communication messages have been offered for initiating, defining, maintaining or further relationship. This refers to content as well as quality of the messages relayed & possibility of the further relation developments. On the following theories each model of communication builds upon. Politeness Theory describes how we manage our self as well as others’ identities by interaction, specifically by using politeness strategies. Social Exchange