This document discusses various concepts related to persuasive writing and communication theories. It provides an overview of the basics of persuasive communication including audience analysis, message clarity, timing, appeals, and content structure. It then summarizes several influential communication theories such as the magic bullet theory, two-step flow theory, cognitive dissonance theory, agenda-setting theory, framing, diffusion and adoption theory, uses and gratifications theory, and Maslow's hierarchy of needs. Examples are also provided to illustrate how some of these theories could apply to public relations scenarios.