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This page was translated from the German original, partly by machine. Some passages may read awkwardly or contain inaccuracies. When in doubt, please read the original.

Anchoring Effect

In short

The first impression strongly influences our decisions.

First impressions count.

Definition​

The anchoring effect describes the tendency to rely too heavily on an initial reference value (the "anchor") when making decisions or estimates, even when this value is irrelevant or arbitrary.

DE: Ankereffekt

The anchoring effect is connected to several other biases and is influenced by them:

  • Priming: Early, seemingly irrelevant stimuli activate associations and strengthen the orientation toward the first value.
  • Framing effect: The way information is presented determines how we interpret anchors.
  • Confirmation bias: Once an anchor is set, we preferentially search for information that supports it.
  • Status quo bias: The current state often serves as an implicit anchor that makes change harder.
  • Availability heuristic: Frequently heard numbers or prices are more easily available in the mind and readily become anchors.

Examples​

Price Negotiations​

The price mentioned first (list price, "offer") sets a reference point. Even if it is inflated, counteroffers and the final result move close to it.

Court Verdicts​

Studies show: if the prosecution demands a high sentence, verdicts turn out higher on average — the demanded value serves as an anchor, even when judges consider it excessive.

Estimation Questions with Arbitrary Numbers​

If a random or obviously wrong number is mentioned before an estimate, later answers move toward that number (e.g. with "How many countries are there in Africa?").

Effects​

  • Distorted judgments and decisions
  • Manipulation through the strategic setting of anchors
  • Difficulty in breaking away from first impressions

Counter-Strategies​

  • Deliberately consider different reference points
  • Make decisions without prior anchors
  • Take the time to think beyond initial impressions

Sources​

  • Wikipedia: Anchoring (cognitive bias)
  • Tversky & Kahneman (1974): "Judgment under Uncertainty: Heuristics and Biases".
  • Chapman & Johnson (1999): "Anchoring, Activation, and the Construction of Values".