The document discusses several models of communication: - The Hypodermic Needle Model suggests messages are directly received and wholly accepted without processing. - The Inoculation Model proposes building tolerance to behaviors from an early age through small exposures like vaccines. - The Two-Step Flow Model holds that ideas spread from media to opinion leaders and their social circles. - Uses & Gratifications Theory focuses on what audiences do with media to fulfill needs rather than media's effects. - Reception Theory examines how audiences perceive and interpret messages differently based on their perspectives.