The message and The receiver

Since world war ii, researchers have worked particularly hard to identify the elements of persuasion. Why? They  have some practical motives: improving advertising and marketing campaigns, motivating audiences, influencing the electorate, girding consumers and voters against propaganda, understanding the dynamics of brainwashing, and -yes-writing better proposals. From all this speculation and research, four elements have consistently been a vital part of nearly every theory of persuasion: the message, the receiver, the channel, and the source. Giving them some consideration will give us a deeper understanding of the process of persuasion.