Argument from Authority
Support conclusions by citing relevant expertise and credible sources.
What & why
People cannot independently verify most claims, so they lean on credible sources as a shortcut, trusting expertise to stand in for evidence they lack the time or knowledge to check. A relevant, qualified authority transfers some of its standing to your claim and reduces the listener's perceived risk in agreeing. The effect holds only when the source genuinely fits the domain; audiences increasingly notice borrowed fame or mismatched credentials, and a misplaced authority can backfire, reading as a sign you lack real evidence of your own.
Before & after
“Famous people say this is a good idea.”
“According to Harvard Business Review's 2024 study of 500 companies, organizations with diverse leadership teams outperform homogeneous teams by 35%.”
When you’ll use it
Supporting business recommendations with industry expert opinions
Citing research findings to support strategic decisions
Using thought leader insights to validate new approaches
Building credibility through appropriate expert endorsements
Pro tip
Cite specific, relevant expertise rather than general fame or popularity.
Questions & answers
What is argument from authority in business communication?
How do I use authority arguments effectively without appealing to irrelevant experts?
When are authority arguments weak or inappropriate?
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