Ethos (Credibility Appeal)
Pattern
Expertise signals + character demonstration — trust through speaker credibility
Definition
Persuasion through the character, expertise, or trustworthiness of the speaker. Ethos-building language establishes the speaker as someone worth listening to — through credentials, shared values, fairness, or demonstrated competence.
Examples
Example 1
In my twenty years of clinical practice, I've never seen a case respond this way.
Personal experience ("twenty years") establishes authority — the claim gains weight from the speaker's track record
Example 2
As the data clearly shows — and as our peer-reviewed findings confirm — the treatment is effective.
Double ethos appeal: empirical evidence ("the data") + institutional credibility ("peer-reviewed")
Example 3
I was wrong about that earlier, and I want to correct myself.
Paradoxical ethos — admitting error actually builds credibility by demonstrating intellectual honesty
AI Detection Note
AI ethos appeals tend to be borrowed rather than earned — citing 'experts' and 'research' generically rather than building credibility through specific experience or demonstrated knowledge. Human ethos is more personal and particular.
See how your writing uses these patterns
Analyze Your Text