What is using your credentials and believability in your speech is an example of what aristotle called?

Aristotle called this appeal to ethos, one of the three modes of persuasion outlined in his work Rhetoric. Ethos refers to the credibility, expertise, and trustworthiness of the speaker. It is important in persuasive speaking as the audience is more likely to believe and be persuaded by someone who is seen as knowledgeable and trustworthy.

When a speaker uses their credentials and expertise to support their argument, they are appealing to ethos. This can be done by mentioning relevant qualifications, relevant experience, or by citing credible sources to back up their claims. By establishing their credibility, the speaker can build trust with the audience and enhance the persuasiveness of their argument. Ethos adds authority and persuasive power to a speaker's message by demonstrating their expertise and integrity.