How do media professionals "know" their audience?

Our behaviors as humans are due to a social context. What we do or how we react is determined by what sociologists and agencies or the style of delivery. When we read about the media we notice the headlines on newspapers or news reports and how they are delivered. They are usually delivered in a creative way to catch our attention. These titles are shaped and constructed by the professionals in a certain way to enable the audience the possibility of gaining knowledge about the news. They create headlines and discuss whether or not the title is "newsworthiness" so that it gains the audiences attention. The professionals also depend on their competition. Sometimes they look to them to notice what is catching the audiences attention. It is also important to understand the act, the scene, the agent, and the purpose. The act is what actually happened or the news report. The scene is the setting or the location. The agent is who is giving the message and the purpose is what is the effect. With those four categories as well as the agency or the style of delivery, the professionals are about to "know" their audiences.