The modes of persuasion, modes of appeal or rhetorical appeals (Greek: pisteis) are strategies of rhetoric that classify a speaker's or writer's appeal to their audience. These include ethos, pathos, and logos, all three of which appear in Aristotle's Rhetoric. Together with those three modes of persuasion, there is also a fourth term, kairos (Ancient Greek: καιρός), which is related to the “moment” that the speech is going to be held. This can greatly affect the speaker’s emotions, severely impacting his delivery. Another aspect defended by Aristotle is that a speaker must have wisdom, virtue, and goodwill so he can better persuade his audience, also known as ethos, pathos, and logos.
The four modes of persuasion are present in advertisements on social media, on television, in flyers, and even on billboards on the side of the road. This type of persuasion can be seen in a simple conversation with family members or friends. Those might present at least one of the aspects of persuasion: logos, with numbers; pathos, with emotional appeal; ethos, with the authority of an entity; and kairos, in the right time or with some relation with them. Another important application of persuasion can be seen in public speeches. Those can be through a process called framing and reframing. This process gets its name because speakers need to use the correct words during a speech so their audience correctly understands their message. If a speaker wants to use a specific word, slang, or metaphor, they need to do a lot of research on their audience's background to understand the values and knowledge of their audience in order to persuade effectively.