Preface. Part I: Introduction. The historical context of communication as a science. Part II: Channels of communication. Language and communication. The role of nonverbal behavior in human interaction. Technologies of communication. Part III: Contexts of communication. Interpersonal communication. Group dynamics and communication. Organizational communication. Mass communication. Intercultural communication. Political communication. Part IV: Persuasive functions of communication. Communication and influence. Communications and social change. Part V: Methods of communication inquiry. Basic types of communication research. A general model of the research process.