This digital document is an article from Encyclopedia of Crime and Justice, brought to you by Gale®, a part of Cengage Learning, a world leader in e-research and educational publishing for libraries, schools and businesses. The length of the article is 1800 words. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Explores the full spectrum of communication, from careers to information technologies, in an interdisciplinary fashion. Emphasis is on both historical and current issues, topics, and people.