You’re sitting in a classroom checking twitter while listening to your favorite music when the clock hits the top of the hour. You take out your headphones and put the phone down when you hear the instructor begin talking. She is referring to a web page projected on the screen in front of class. She welcomes everyone to the start of the school year, but stops to wait for the guy next to you to put down his phone that he’s reading. She explains that she will only provide an electronic version of the syllabus, pointing to the course web page. Everyone in the class is to go online and read the syllabus before the next class meeting. She explains that, besides lecture and discussion, you will need to watch CNN, read the Wall Street Journal, and watch several clips she’s listed on YouTube to demonstrate and learn key concepts. Suddenly, from the back of the class a cell phone begins ringing. The instructor stops mid-sentence and explains the class policy about turning off cell phones during class. Your classmate never answers the phone but reaches into his pocket and looks at the phone screen. The instructor explains that you will need to read chapter one of the textbook by next week. Included with your textbook is a pass-code that allows you to connect to an online database so you can access articles for your semester project. After she answers student questions, class is over.

As you head out the door you hear music coming from the building sound system playing the student-run FM radio station. You walk to the student union to grab lunch and watch whatever they’re playing on the large screen television. On your drive home, you turn on the radio to listen to the broadcast of your favorite baseball team. While driving, you notice the new billboard advertising Ford trucks. When you get home, you sit down in front of your computer. You check a class web page to see if you have homework, check the day’s current events and sporting scores, then check your email. You read several messages, delete the spam, and get irritated at the pop-up advertisements that keep jumping on your screen. After shutting down your computer you sit on the couch to watch a movie streaming through Netflix. As you lean back on the couch, you clear away a stack of magazines to set down your drink.

The above example is representative of the amount of mass communication we are exposed to daily. In the U.S. we witness and understand a great deal of our world through mass communication. Remember from Chapter 2 that in the early part of the 20th century, communication scholars began to ask questions about the impact of media as more and more mass communication outlets were developed. Questions then and now include: To what degree does mass communication affect us? How do we use or access mass communication? How does each medium influence how we interpret messages? Do we play an active or passive role when we interact with media? This chapter explores these questions by examining the concept of mass communication, its evolution, its functions, its theories, and its place in society.