This volume presents an overview of police communications and analyzes the relationships between the people and hardware in the police system. Chapters discuss the development and use of such communication devices as the telegraph, telephone, and computers; the role of mass media, feedback, and communicative settings in human communication; "exercises designed to promote self-awareness and communication; the importance of territory, gestures, and other nonverbal expressions in nonverbal communication; language and the stereotypes and differences that concern minority groups; communication in conflict situations; the structure and use of communications media; listening; public speaking; and the officer, the criminal justice system, and the future. An appendix describes a plan by the New York City police department to create a civilian operations division and to train auxiliary police officers. (KS)