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Anchoring

Why It Matters

First numbers in a negotiation matter disproportionately. Estimates are biased by whatever arbitrary number was recently encountered. This isn't just about initial offers - any number can serve as an anchor.

The Key Move

Ask: what anchors are present? How might they be biasing the judgment? In negotiations: move first if you have information to anchor favorably; be aware of their anchor and adjust away from it if they move first.

Classic Application

Real estate negotiation. Listing prices serve as anchors. Buyers estimate value relative to the listing, even when they know the listing is inflated. A $500,000 listing makes $450,000 feel like a good deal; a $400,000 listing makes $425,000 feel expensive. Same house.

Surprising Application

Sentencing decisions. Judges' sentencing recommendations are anchored by prosecutor demands, even when those demands are extreme. Arbitrary numbers - even from dice rolls in experiments - anchor subsequent judgments about appropriate sentences.

Failure Modes

  • Thinking you're immune to anchoring - everyone is affected, including experts
  • Over-correcting and ignoring genuinely informative reference points
  • Confusing anchoring with learning - sometimes initial information is actually relevant
  • Missing that anchors can be manipulated strategically
  • Ignoring that adjustment away from anchors is typically insufficient

Go Deeper

Kahneman's "Thinking, Fast and Slow" for accessible treatment. Tversky and Kahneman's original research.