Ethos: Third-Party Endorsements
Boost credibility by citing respected sources, experts, or satisfied clients.
What & why
Borrowed credibility works as a shortcut for trust. When listeners cannot personally verify a claim, the judgment of a respected third party becomes evidence in its place, so a named source or a documented result lets them lean on that authority instead of taking your word alone. The effect strengthens when the source is both relevant and specific, since a vague appeal to what experts say carries far less weight than a named organization with a measurable outcome attached.
Before & after
“I believe this is the best solution available”
“Industry leader Microsoft implemented this approach and saw 40% productivity gains, as documented in their recent case study”
When you’ll use it
Sales presentations: Including client testimonials and case studies that validate product effectiveness and service quality
Consulting proposals: Referencing endorsements from previous clients and industry recognition or awards received
Team recommendations: Citing expert opinions, research studies, or industry best practices to support proposed strategies
Performance reviews: Including feedback from colleagues, clients, or other departments to support self-assessments
Pro tip
Name specific sources and quantify their authority or results.
Questions & answers
What are third-party endorsements in business speaking?
How do I effectively use testimonials in business presentations?
What makes a testimonial credible and effective?
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Practice this concept
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