This detailed survey of present-day scientific communication theory rejects the outmoded levels organizational scheme in favor of a system based on the underlying model and fundamental explanatory principle each theory presupposes. In doing so it shows the fundamental similarities among all communication-relevant contexts. Most theories included in the book are causal in nature, derived from one of three underlying models: message production, message reception, or interactive. A few theories take on a functional form, sometimes in dialectic or systemic versions. An introductory chapter...