This document discusses several key concepts in audience theory and media studies. It defines the hypodermic needle theory as the idea that media can directly "pass on" ideas and ideologies to audiences. It also describes uses and gratifications theory, explaining that people actively seek out specific media to satisfy needs like personal identity, social interaction, and entertainment. Additionally, it provides examples of consumer generated content and how audiences can unintentionally advertise for companies. Finally, it outlines different psychographic audience segments like achievers, emulators, and balanced individuals.