Definition
Anchoring Bias
A cognitive bias where people rely heavily on the first piece of information encountered (the 'anchor') when making decisions. Used in pricing pages by showing the highest plan first.
What does Anchoring Bias mean?
Anchoring bias describes how the first number or reference point a person encounters shapes their judgment of everything that follows, even when that anchor is arbitrary or irrelevant to the decision at hand. It was first documented in behavioral economics research on numerical estimation and has since become a staple concept in pricing psychology.
Why does Anchoring Bias matter?
On a pricing page, anchoring determines how 'expensive' a plan feels relative to what visitors saw first, which is why the highest-priced tier is often shown before cheaper options, or a crossed-out original price sits next to a discounted one. Getting the anchor wrong can make a fairly priced product feel overpriced or a genuinely premium one feel cheap.
How is Anchoring Bias applied in practice?
It is applied by controlling the order and framing of prices, plan tiers, or comparison figures on a page, then testing variations to see which anchor produces the best mix of conversion rate and average order value. Analytics tools track plan selection distribution to confirm whether an anchor is nudging visitors toward the intended tier.
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Where this fits
Anchoring Bias sits in the conversion rate optimization part of the NotiProof resource network.
Read the Conversion Rate Optimization guide