NEGOCOACH
207
Origin : Cognitive science

🧠 Cognitive science

Behavioural economics & social psychology

R. Cialdini ("Influence", 1984), D. Kahneman & A. Tversky, R. Thaler, D. Ariely.

Full detail in the “Origin & history” section below.

207

The Anchoring Bias

Exploitable cognitive biases Technique 207 / 360
Alexandre Baumberger

Author of the library

Alexandre Baumberger

Negotiation lecturer at KEDGE Business School

A rare threefold background serving negotiation: teaching, commercial justice and audit, backed by experience as a company director in Bordeaux.

  • Teaching, KEDGE Business School Negotiation lecturer since 2014 (12 years).
  • Commercial justice, Commercial Court Judge from 2018 to 2026: litigation, then insolvency proceedings.
  • Audit & advisory, over 20 years Tax, employment and financial audit in major firms, for large groups.
Full profile Contact him
In brief

The anchoring bias refers to the tendency to overweight the first piece of information received, often a figure, when forming an overall judgement. In negotiation, whoever puts the first number on the table sets a reference point around which the other party adjusts, almost always insufficiently. Demonstrated by Tversky and Kahnemani, it turns the opening move into a genuine framing lever.

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Reading level

At a glance

Its family profile at a glance

Effectiveness Psychologicalimpact Discretion Preparation Relationalrisk Ethics
8.0 / 10 Tactical potential

Vigilance: high (6.0/10) · Preparation required: 5/10

Grounding in the source school School grounded in experimental research

Indicative profile: it situates the “Exploitable cognitive biases” family as the Cognitive science school practises it, not this technique taken in isolation. Techniques from the same family and school therefore share the same profile. NEGOCOACH editorial rating out of 10, non-experimental · the higher the “relational risk” value, the more costly the technique is to the relationship.

NEGOCOACH assessment

How to read this rating

Tactical potential 8.0/10 (effectiveness, impact, discretion) and vigilance high (relational and ethical risk): two distinct readings, deliberately never merged into a single score that would reward risk. NEGOCOACH editorial rating calibrated from the “Exploitable cognitive biases” family and the “Cognitive science” school. Each criterion is rated out of 10; click to understand what it measures.

  • Effectiveness 8/10 · Very high

    How far the technique can carry the negotiation in the intended direction when it is well executed.

  • Psychological impact 10/10 · Very high

    Strength of the effect produced on the counterpart's perceptions, emotions and decisions.

  • Discretion 6/10 · High

    How hard it is for the other party to notice the technique is being used. A high value = very discreet.

  • Preparation 5/10 · Moderate

    The information, analysis and rehearsal required upfront to use it effectively.

  • Relational risk 5/10 · Moderate

    Potential cost to the relationship and to trust if the technique is spotted, refused or fails. A high value = riskier.

  • Ethics 4/10 · Moderate

    Moral acceptability: fairness, transparency and respect for the counterpart's autonomy. A high value = more defensible.

Level of evidence

School grounded in experimental research

The school this technique stems from is grounded in replicated, peer-reviewed experimental work. This indicator qualifies the school, not the experimental validation of this technique taken in isolation.

Indicative NEGOCOACH editorial rating, for teaching purposes. For “Relational risk”, a high value signals a cost to the relationship, not a quality.

Anchoring at a Glance

Origin & History

The bias was formalised in 1974 by Amos Tversky and Daniel Kahneman in Science, through the wheel-of-fortune experiment: a randomly drawn number influences the estimate of a quantity that bears no relation to it. It forms part of the heuristics and biases programme that earned Kahneman the Nobel Prize in Economics in 2002. Later work by Galinsky and Mussweileri transposed it directly to negotiation, showing the advantage of the first offer.

Definition and Principle

Anchoring rests on a mechanism of insufficient adjustment: faced with a starting value, the mind corrects from it without ever moving far enough away. A high asking price thus shifts the entire negotiation space upwards. The bias operates even when the anchor is plainly arbitrary or extreme, and it withstands our awareness of it. Its strength lies in the fact that it acts before deliberation even begins: the anchor steers the search for arguments rather than concluding it.

Concrete Examples of Application

Application by context

The same technique, across every negotiation settings

Context 1 / 8

Sales negotiation

A software-solution vendor states from the outset: “Our clients of your size typically invest between €80k and €120k per year.” The buyer, who had €40k in mind, now negotiates around €70k without even noticing, the high anchor having redefined what seems “reasonable”.

How to apply it

Open with an evidenced yet ambitious figure, never a round one, to signal that it is calculated. Tie it to an external reference (market, ROI) that makes it credible rather than arbitrary.

Strengths

Shifts the entire discussion range in your favour from the very first minute; saves rounds of concession.

Weaknesses

An anchor deemed unreasonable can put the buyer on the defensive, or even wreck the relationship before any exchange of arguments.

Context 2 / 8

Procurement negotiation

On the buyer's side, a purchasing director gets in ahead of the vendor: “The budget allocated to this item is €25k, non-negotiable internally.” The salesperson, deprived of their usual high anchor, builds their proposal around this low ceiling, now the new centre of gravity.

How to apply it

Set your own anchor first when you hold market information; failing that, immediately disqualify the opposing anchor (“that price bears no relation to observed rates”) to stop it taking hold.

Strengths

Reclaims the framing initiative and protects the internal budget; turns a constraint into a lever.

Weaknesses

A floor set too low may be read as a lack of seriousness and drive the best supplier to walk away.

Context 3 / 8

Labour negotiation

In collective pay bargaining, the representatives open with a claim of +8% while their real target is +4%. Management, anchored on this high figure, ultimately regards +4.5% as a midpoint victory, whereas without that opening it would have resisted any rise at all.

How to apply it

Set the opening claim well above the target, but underpin it with objective data (inflation, sector comparables) so that it cannot be dismissed as fanciful.

Strengths

Structures the entire bargaining table around your scale; makes a compromise that is actually advantageous look credible.

Weaknesses

An opening perceived as provocative can harden the opposing camp and entrench the conflict.

Context 4 / 8

Crisis management

During a hostage-taking, a captor demands a colossal sum and a plane. The negotiator knows this initial demand is an anchor designed to make the subsequent demands appear “moderate”; they refuse to respond in figures and reframe the discussion around concrete steps.

How to apply it

Never counter-anchor an extreme demand with a figure: doing so implicitly validates the scale. Move the debate towards non-numerical elements (time, safety) to dissolve the anchor.

Strengths

Deprives the opponent of their reference point and regains control of the tempo.

Weaknesses

Refusing to engage with figures can, if poorly calibrated, be experienced as contempt and heighten the tension.

Context 5 / 8

Political negotiation

In an inter-ministerial budget negotiation, a ministry publicly claims an envelope far larger than its real need. The figure, relayed by the press, anchors public opinion, and subsequent trade-offs are made in relation to it rather than to the objective need.

How to apply it

Set the anchor publicly and early so that it becomes the media reference; document it to withstand the charge of overbidding.

Strengths

Frames the public debate and shifts the centre of the trade-off in your favour.

Weaknesses

A public anchor is irreversible: backing down afterwards carries a political cost in credibility.

Context 6 / 8

Real-estate negotiation

A seller lists a property at €480k when the valuation comes out at €420k. Viewers, anchored on the listed price, negotiate a “good deal” at €445k, convinced they have secured a discount, yet still above the property's true market value.

How to apply it

Set the listing price a notch above the target value without leaving the sector's credible range; let the buyer “win” a reduction that still favours you.

Strengths

Captures the market's psychological premium; steers the perception of the discount.

Weaknesses

A price too far out of touch lengthens the time on market and signals an unrealistic seller, which deters offers.

Context 7 / 8

Cross-cultural negotiation

In a market where haggling is ritual (North Africa, the Middle East), a vendor announces a price three times the value: the anchor is not a lie but the expected opening of a social dance. The Western buyer who takes it literally either overpays or gives offence by refusing to play.

How to apply it

Calibrate the amplitude of the anchor to the local cultural norm: aggressive where haggling is an expected game, measured in fixed-price cultures where it would come across as bad faith.

Strengths

Aligns the strategy with the codes of the relationship; avoids relational missteps.

Weaknesses

The same anchor read as normal here will be perceived as insulting elsewhere: the risk of misreading is high.

Context 8 / 8

Family negotiation

During the division of an inheritance, one of the children asserts very early on: “The house is easily worth €600,000.” This figure, never professionally appraised, becomes the reference point for subsequent discussions of compensation between heirs, even though it is overvalued.

How to apply it

Neutralise the emotional anchor with a third-party, objective valuation (notary, expert) obtained before any discussion of shares, so as to start from a shared basis.

Strengths

A figure put forward early durably steers a debate that has no formal frame of reference.

Weaknesses

Within a family, an anchor perceived as self-serving feeds resentment and hardens positions.

Counter-techniques

Spot and neutralise this technique

Negotiation is also played on defence. Here is how to recognise this technique when it is used against you, and turn it around.

Detect

The signals that give it away

  • An extreme first figure (anchoring)
  • A framing as loss rather than gain
  • The endowment effect ("it's already yours")

Neutralise

The counters that defuse it

  • Reject the anchor and set your own
  • Reframe the decision as a gain
  • Assess out of context, on the facts

Turn around

Turn it into an advantage

Set your own anchor first: it will structure the discussion.

The trap to avoid

Reasoning from the other side's figure.

In Brief

  • Difficulty: Beginner
  • Estimated effectiveness: Very high
  • Time to implement: Immediate, from the opening
  • Fields of application: Sales, Procurement, Pay negotiation, Real estate, Diplomacy
  • Synonyms: Anchoring effect, Anchoring bias, Anchoring-and-adjustment
  • Tags: anchoring, first offer, Kahneman, framing, heuristic

Strengths and Weaknesses

Anchoring is one of the most robust and well-documented levers in negotiation: it works effortlessly, without the other party's conscious consent, and from the very first sentence. Putting forward an evidenced figure shifts the whole discussion space and makes every subsequent round pay off. Its limit: an unreasonable anchor puts the counterpart on the defensive and can break the relationship before the first exchange of arguments.

When to Use This Technique

Use it whenever you need to open on a figure and you have at least some market information to justify it. It is particularly powerful against a counterpart who is uncertain of the true value. Avoid it when the other side is better informed than you, in which case the anchor backfires, or when the relationship matters more than the immediate gain.

How to Recognise and Counter This Technique

Recognise it: an extreme first figure is put forward without solid justification, often very early. Neutralise it: do not counter-anchor straight away; name the anchor (“that figure bears no relation to the market”) and insist on starting again from objective criteria. Turn it around: then put forward your own evidenced anchor to redefine the scale in your favour.

Limits and Ethics

Anchoring is not manipulation in itself; it is a cognitive fact that every negotiator exploits. The ethical drift begins when the anchor rests on a false reference (an invented figure, a misleading comparable) exploiting the other's ignorance, especially against a counterpart who is vulnerable or unwary. The rule: an ambitious anchor is legitimate, a deceitful anchor is not.

Variants and Related Techniques

It combines with Framing and the Overton Window of extreme positions. Developed by Galinsky as “anchoring through the first offer” and by Chris Voss via the emotional anchor and the range. It stands opposed to Fisher and Ury's principled negotiation based on objective criteria.

Going Further

  • Amos Tversky & Daniel Kahneman, “Judgment under Uncertainty: Heuristics and Biases”, Science, 1974.
  • Adam Galinsky & Thomas Mussweiler, “First Offers as Anchors: The Role of Perspective-Taking and Negotiator Focus”, Journal of Personality and Social Psychology, 2001.
  • Daniel Kahneman, Thinking, Fast and Slow, 2011.

Objectives of the Technique

  • Steer the other party's perception of value by setting a strong initial reference point (first offer or range).
  • Shift the likely zone of agreement (ZOPA) in your favour before the substantive discussion begins.
  • Guard against the opposing anchor by recognising and neutralising it (counter-anchoring, reframing on objective criteria).
  • Structure a controlled concession by starting from an ambitious yet defensible opening position.
  • Give a numerical frame to a negotiation that would otherwise remain vague, to speed up convergence.

Famous Cases

Sales · The high anchor of the property listing price: A seller lists a property well above the market valuation. Even when informed of the overvaluation, buyers make counter-offers higher than they would have had the listed price been low: their mental starting point remains anchored on the initial amount. A representative scenario illustrating the documented effect of the listing price on offers, without attribution to any particular real transaction.

Everyday life · The salary range at hiring: In a pay negotiation, the candidate who is first to state an ambitious but evidenced range (market, experience, results) pulls the final offer upwards: the employer adjusts from that reference rather than from their initial internal budget. A representative scenario of the anchoring effect of the first offer.

Common Mistakes

  • Setting an absurd or indefensible anchor, which destroys credibility and breaks off the discussion instead of steering it.
  • Letting the other party anchor first without recognising or neutralising the anchor, then negotiating inside the frame it has set.
  • Confusing anchoring with intransigence: staying fixed to the anchor to the point of blocking any agreement, when an anchor is only a starting point meant to be adjusted.
  • Failing to justify the anchor with objective criteria, which makes it easy to brush aside.
  • Over-anchoring against an expert or well-informed counterpart, for whom the effect weakens and can turn into a signal of bad faith.

Scientific Foundations

  • Amos Tversky, Daniel Kahneman (1974) Judgment under Uncertainty: Heuristics and Biases Science, 185(4157), 1124-1131, DOI: 10.1126/science.185.4157.1124
  • Daniel Kahneman (2011) Thinking, Fast and Slow Farrar, Straus and Giroux
  • Adam D. Galinsky, Thomas Mussweiler (2001) First Offers as Anchors: The Role of Perspective-Taking and Negotiator Focus Journal of Personality and Social Psychology, 81(4), 657-669, DOI: 10.1037/0022-3514.81.4.657

Quick exercise

Test yourself before answering

Answer in your head, then reveal the solution. Memory is built through active recall.

1 Quels signaux doivent vous alerter ?
  • An extreme first figure (anchoring)
  • A framing as loss rather than gain
  • The endowment effect ("it's already yours")
2 Quelles parades appliquer ?
  • Reject the anchor and set your own
  • Reframe the decision as a gain
  • Assess out of context, on the facts

Frequently asked questions

The questions we get most

What is the "The Anchoring Bias" technique?

The anchoring bias refers to the tendency to overweight the first piece of information received, often a figure, when forming an overall judgement. In negotiation, whoever puts the first number on the table sets a reference point around which the other party adjusts, almost always insufficiently. Demonstrated by Tversky and Kahnemani, it turns the opening move into a genuine framing lever.

Is the "The Anchoring Bias" technique ethical?

It sits on the line: effective, but it can tip into manipulation if it exploits an information asymmetry. Use it with measure and without deliberate deceit.

How do you defend against "The Anchoring Bias"?

Reasoning from the other side's figure. The right reflex: reject the anchor and set your own.

What is the "The Anchoring Bias" technique based on?

NEGOCOACH does not assess the experimental validation of this technique in isolation. What we document is the grounding of its source school (Cognitive science): school grounded in experimental research. Full detail is in the "At a glance" section of this page.

Practise with AI

Three ready-to-use prompts

Copy, paste into your assistant, replace the [brackets]. Works with ChatGPT, Claude, Gemini, Mistral, Perplexity.

Prepare

Build your plan before the meeting

You are an expert negotiation coach. Help me prepare to use the "The Anchoring Bias" technique in the following situation: [describe your situation]. Give me: the conditions for success, a 3-step script, my counterpart's likely objections and how to answer them.

ChatGPT Claude Perplexity

Simulate

Rehearse against an AI counterpart

Play the role of my counterpart in a negotiation. I am going to test the "The Anchoring Bias" technique. React realistically and with resistance, do not give in too quickly, then at the end analyse my performance and suggest 3 concrete improvements.

ChatGPT Claude Perplexity

Debrief

Analyse a past negotiation

Here is how my negotiation went: [paste the exchanges]. Analyse whether the "The Anchoring Bias" technique was used well, what worked, the mistakes made, and spell out precisely what I could have done better.

ChatGPT Claude Perplexity

References

Bibliography & credible sources

Founding works of the 🧠 Cognitive science school this technique belongs to.

  • Cover: Influence, The Psychology of Persuasion

    Influence, The Psychology of Persuasion

    Book

    R. Cialdini · 1984

    The founding work on the mechanisms of persuasion: six universal principles (reciprocity, consistency, social proof, authority, liking, scarcity) illustrated with striking experiments. A landmark in social psychology.

  • Cover: Thinking, Fast and Slow

    Thinking, Fast and Slow

    Book

    D. Kahneman · 2011

    The sum of Kahneman's work on decision-making: two systems of thought, one fast and intuitive, the other slow and analytical, and the long list of biases that distort our judgements. Essential to understanding others... and yourself.

  • Cover: Nudge

    Nudge

    Book

    R. Thaler & C. Sunstein · 2008

    How to steer choices without constraint, by acting on the "choice architecture". The book popularised the nudge and behavioural economics applied to public policy as much as to management.

  • Judgment under Uncertainty: Heuristics and Biases (Science)

    Article

    A. Tversky & D. Kahneman · 1974

    The founding paper (Science, 1974) that uncovered the heuristics and biases of judgement, including anchoring. The starting point of the behavioural-economics revolution.

R. Cialdini ("Influence", 1984), D. Kahneman & A. Tversky, R. Thaler, D. Ariely.

On video

See the technique in action

Videos to picture The Anchoring Bias and anchor it through examples.

Search for videos Examples & demonstrations

Technique map

Where this technique sits

Every technique sits within a network: what it draws on, what it combines with, where it applies, and how to defend against it.

Levers engaged

biases & emotions

Fields of application

Sales negotiation Procurement negotiation Labour negotiation Crisis management Political negotiation Real-estate negotiation Cross-cultural negotiation Family negotiation

Countered by

Spot its signals, neutralise it and turn it around with the defensive playbook on this page.

See the counter-techniques

Key takeaways

  • En une phrase

    The anchoring bias refers to the tendency to overweight the first piece of information received, often a figure, when forming an overall judgement. In negotiation, whoever puts the first number on the table sets a reference point around which the other party adjusts, almost always insufficiently. Demonstrated by Tversky and Kahnemani, it turns the opening move into a genuine framing lever.

  • The right reflex

    Set your own anchor first: it will structure the discussion.

  • Never do this

    Reasoning from the other side's figure.

8.0/10 tactical potential High vigilance School grounded in experimental research

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