The document discusses several audience theories: 1) The hypodermic needle theory suggests that audiences passively receive ideas from media texts without processing or challenging the information. 2) The two-step flow theory suggests that audiences are more influenced by media when they discuss it with others, particularly opinion leaders. 3) Uses and gratifications theory holds that audiences have different reasons for consuming media, such as for information, identity, and social interaction. 4) Reception theory examines the relationship between media texts and audiences, noting that encodings by producers can be decoded differently by audiences, though recognized codes and genres help produce shared meanings.