“Trust the Expert: How Authority Bias Builds Business Credibility and Sale Authority bias is the tendency to trust and follow the opinions of perceived experts or authority figures. In business, this bias is used to build credibility and influence decisions. Brands often feature endorsements from doctors, celebrities, or industry leaders to validate their products. For example, skincare brands use dermatologists, while financial firms highlight expert advisors. Certifications, awards, and media mentions also trigger authority bias by signaling expertise. Even design elements—like formal language or professional branding—can make a business appear more authoritative. When customers see a product backed by a trusted figure, they’re far more likely to buy it.
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