The winner's curse refers to "winning" a negotiation or an auction at the price of an excessive concession: the one who prevails is often the one who most overestimated the value of the good or underestimated its cost. In a situation of incomplete information and common value, winning the deal is in itself an unfavorable signal, because it means one has offered more than everyone else. The winner walks away with the coveted object but with a profitability below their expectations, sometimes negative. It is a systematic cognitive trap, empirically documented, that turns an apparent victory into a real loss.
Indicative profile: it situates the “Mistakes & pitfalls in negotiation” family as the Mistakes & pitfalls 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 3.7/10 (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 “Mistakes & pitfalls in negotiation” family and the “Mistakes & pitfalls” school. Each criterion is rated out of 10; click to understand what it measures.
Effectiveness3/10 · Low
How far the technique can carry the negotiation in the intended direction when it is well executed.
Psychological impact4/10 · Moderate
Strength of the effect produced on the counterpart's perceptions, emotions and decisions.
Discretion4/10 · Moderate
How hard it is for the other party to notice the technique is being used. A high value = very discreet.
Preparation3/10 · Low
The information, analysis and rehearsal required upfront to use it effectively.
Relational risk8/10 · Very high
Potential cost to the relationship and to trust if the technique is spotted, refused or fails. A high value = riskier.
Ethics5/10 · Moderate
Moral acceptability: fairness, transparency and respect for the counterpart's autonomy. A high value = more defensible.
Level of evidence
Documented school
The school this technique stems from is documented by recognised work and established practice, without experimental consensus. This indicator qualifies the school, not 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.
Overview: The Winner's Curse
Origin & history
The concept was formalized in 1971 by three petroleum engineers at Atlantic Richfield (ARCO), Edward C. Capen, Robert V. Clapp and William M. Campbell, in "Competitive Bidding in High-Risk Situations" (Journal of Petroleum Technology), based on the auctions for offshore oil concessions where the winning companies achieved disappointing returns year after year. The phenomenon was then popularized and linked to behavioral economics by Richard H. Thaler in "Anomalies: The Winner's Curse" (Journal of Economic Perspectives, 1988), and studied experimentally notably by Max Bazerman and William Samuelson.
Definition and principle
A negotiation and auction bias by which, in a context of common value (the good is worth roughly the same to all the actors) and uncertainty about that value, the deal is won by the party that formulated the most optimistic estimate, and therefore the one most probably erring on the high side. Operationally, the curse arises whenever the "winner" does not correct their offer to take into account the information contained in the very fact of winning (adverse selection): concluding means that no one else was willing to go as far, which suggests that the real value is below the price paid.
Objectives of the technique
Understand why winning a deal can be bad news rather than a victory
Distinguish perceived value from real value and integrate the information revealed by the fact of winning
Discipline one's offers in a situation of uncertainty and competition to avoid overpaying
Detect the mechanisms (auctions, calls for tender, emotional overbidding) that structurally push toward overestimation
Protect the profitability and credibility of the agreement beyond the mere fact of concluding
A salesperson, so as not to leave the contract to a competitor, grants a discount and additional services such that the margin becomes zero: they have "won" the customer but lost the deal economically.
Context 2 / 8
Procurement negotiation
A buyer wins a supplier call for tender at the lowest price, then discovers that this price was only achievable at the expense of quality, deadlines or the supplier's soundness, turning the best offer into the worst decision.
Context 3 / 8
Labour negotiation
An HR director gives way, to obtain the union's signature and "close" the conflict, on permanent benefits (bonuses, additional days off (RTT)) whose cumulative cost far exceeds the savings from the avoided labour action.
Context 4 / 8
Crisis management
In a hostage or ransom negotiation, the authority that accepts overly generous conditions to obtain a quick release "wins" the immediate outcome but creates a costly precedent and encourages repetition.
Context 5 / 8
Political negotiation
A party that wins a coalition by promising excessive portfolios and budgetary commitments discovers that the price of the electoral victory makes the mandate ungovernable or financially untenable.
Context 6 / 8
Real-estate negotiation
At an auction or during overbidding between buyers, the buyer who prevails is often the one who most overvalued the property, paying a price that the market and the other candidates already deemed excessive.
Context 7 / 8
Cross-cultural negotiation
A negotiator eager to conclude in a long-cycle culture interprets the quickly obtained agreement as a victory, without seeing that they conceded the essential to wrest a signature that the other party was not prepared to honor fully.
Context 8 / 8
Family negotiation
In the division of an estate, the heir who "wins" the family home by buying out the shares at a high price so as not to see it leave the family assets ends up in debt and short-changed, facing co-heirs delighted by the valuation.
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
A sudden imbalance in the exchange
Pressure to decide quickly
An argument you cannot verify
Neutralise
The counters that defuse it
Slow down and reformulate
Ask for facts and sources
Concede nothing without a counterpart
Turn around
Turn it into an advantage
Name the manoeuvre: said out loud, a technique loses most of its power.
The trap to avoid
Reacting emotionally instead of coming back to the facts.
Strengths and Weaknesses
Strengths (as an analytical framework): the notion offers a powerful safeguard against the euphoria of concluding; it recalls that the true measure of success is the net value of the agreement, not the nominal victory; it rationally explains recurring losses in calls for tender and auctions; it is robust, validated by experimentation and market observation. Weaknesses / dangers (as a trap suffered): it destroys margin and value; it is self-sustaining through commitment and ego ("I have already invested so much, I must win"); it is aggravated by competitive pressure, urgency and information asymmetry; the winner often discovers the real cost too late, once the agreement is irreversible.
When should this technique be used?
The risk of the winner's curse is greatest in configurations of common value and uncertainty: open auctions and calls for tender with many participants (the more competitors there are, the more extreme the winning estimate), company acquisitions, real-estate sales with overbidding, public procurement awarded to the lowest bidder, emergency or deadline situations where one wants to "get it over with," and any context where ego, the fear of losing or rivalry prevail over a cool assessment of value.
Famous cases
Business · Offshore oil auctions (origin of the concept), In the late 1960s, the oil companies winning the concessions of the American continental shelf (Gulf of Mexico) observed systematically disappointing returns. Three Atlantic Richfield engineers, Capen, Clapp and Campbell, showed in 1971 that the winner of a common-value auction is almost always the one who most overestimated the reserves: winning the auction amounted to overpaying. ARCO even experienced a year in which, having won everything it had bid on, it found itself in budgetary difficulty, a direct illustration of the curse.
Sales · The call for tender won at a loss (representative scenario), A representative scenario, without attribution: a service provider responds to a large, highly competitive call for tender. To be certain of winning against a dozen candidates, they adjust their price well below their initial cost estimates. They win, precisely because they are the only one to have gone so low, that is, the most optimistic about their costs. During execution, the real charges exceed the price: the "won" contract ties up their teams at a loss for two years and weakens their cash flow.
Common mistakes
Confusing concluding with succeeding: treating the signature as the objective, without measuring the net value actually obtained
Ignoring the information revealed by the victory: not asking oneself "why did no one else want to go as far?"
Getting carried away by emotional overbidding and the competitive spirit (wanting to beat the opponent rather than serve one's interest)
Underestimating the effect of the number of competitors: the more participants there are, the more likely the winning estimate is to be excessive
Not setting a reservation price or a ceiling in advance and moving it under the pressure of the moment
How to recognize and counter this technique
To defend yourself: set BEFORE the negotiation a limit value (reservation price, walk-away) based on an independent valuation, and stick to it. Deliberately correct your estimate downward in a common-value situation ("if I win, it's probably because I overvalued"), which is the principle of bid shading. Beware of the mechanisms that push toward overbidding (open auctions, artificial deadlines, the visible presence of rivals). Separate the ego from the case: measure success by the net margin, not by the victory. Gather information (due diligence) to reduce the uncertainty that feeds the bias, and explicitly integrate adverse selection into the calculation.
Limits and ethics
The winner's curse presupposes precise conditions (common value, uncertainty, competition): it does not apply mechanically to private-value negotiations where the object is genuinely worth more to one party than to another, paying "a lot" there is sometimes rational. Ethically, the concept should serve to avoid trapping oneself, not to manipulate the other: deliberately provoking the curse in an opponent (stoking overbidding, maintaining false scarcity, orchestrating fake competitors) is a matter of deception. Recognizing the risk does not authorize artificially creating the conditions that aggravate it in the partner.
Variants and related techniques
Related techniques and biases: the buyer's curse (overbidding in company acquisitions); escalation of commitment / sunk costs which pushes one to overpay so as "not to have won for nothing"; the optimism bias and overconfidence in estimation; anchoring on an overly high starting price; the fear of losing (loss aversion, FOMO); conversely, bid shading and the reservation price as safeguards; the concept of adverse selection in the economics of information.
Going further
Richard H. Thaler, The Winner's Curse: Paradoxes and Anomalies of Economic Life (1992), the reference book for a general audience
Max H. Bazerman & Don A. Moore, Judgment in Managerial Decision Making, chapter on the winner's curse and decision biases
Capen, Clapp & Campbell (1971), "Competitive Bidding in High-Risk Situations," Journal of Petroleum Technology, the founding text
John H. Kagel & Dan Levin, Common Value Auctions and the Winner's Curse (Princeton University Press, 2002), an experimental synthesis
Scientific foundations
Edward C. Capen, Robert V. Clapp, William M. Campbell (1971) Competitive Bidding in High-Risk Situations Journal of Petroleum Technology, 23(6), 641-653
Richard H. Thaler (1988) Anomalies: The Winner's Curse Journal of Economic Perspectives, 2(1), 191-202, DOI: 10.1257/jep.2.1.191
Max H. Bazerman, William F. Samuelson (1983) I Won the Auction But Don't Want the Prize Journal of Conflict Resolution, 27(4), 618-634
Quick exercise
Test yourself before answering
Answer in your head, then reveal the solution. Memory is built through active recall.
1Quels signaux doivent vous alerter ?
A sudden imbalance in the exchange
Pressure to decide quickly
An argument you cannot verify
2Quelles parades appliquer ?
Slow down and reformulate
Ask for facts and sources
Concede nothing without a counterpart
Frequently asked questions
The questions we get most
What is the "The Winner's Curse" technique?
The winner's curse refers to "winning" a negotiation or an auction at the price of an excessive concession: the one who prevails is often the one who most overestimated the value of the good or underestimated its cost. In a situation of incomplete information and common value, winning the deal is in itself an unfavorable signal, because it means one has offered more than everyone else. The winner walks away with the coveted object but with a profitability below their expectations, sometimes negative. It is a systematic cognitive trap, empirically documented, that turns an apparent victory into a real loss.
Is the "The Winner's Curse" 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 Winner's Curse"?
Reacting emotionally instead of coming back to the facts. The right reflex: slow down and reformulate.
What is the "The Winner's Curse" 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 (Mistakes & pitfalls): documented school. 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 Winner's Curse" 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.
Play the role of my counterpart in a negotiation. I am going to test the "The Winner's Curse" technique. React realistically and with resistance, do not give in too quickly, then at the end analyse my performance and suggest 3 concrete improvements.
Here is how my negotiation went: [paste the exchanges]. Analyse whether the "The Winner's Curse" technique was used well, what worked, the mistakes made, and spell out precisely what I could have done better.
Founding works of the ⚠️ Mistakes & pitfalls school this technique belongs to.
Negotiating Rationally
Book
M. Bazerman & M. Neale · 1992
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.
The Mind and Heart of the Negotiator
Book
L. Thompson · 2015
Classic mistakes and negotiator biases: M. Bazerman & M. Neale ("Negotiating Rationally"), D. Kahneman (biases and heuristics), L. Thompson.
The author
Author
On video
See the technique in action
Videos to picture The Winner's Curse and anchor it through examples.
The winner's curse refers to "winning" a negotiation or an auction at the price of an excessive concession: the one who prevails is often the one who most overestimated the value of the good or underestimated its cost. In a situation of incomplete information and common value, winning the deal is in itself an unfavorable signal, because it means one has offered more than everyone else. The winner walks away with the coveted object but with a profitability below their expectations, sometimes negative. It is a systematic cognitive trap, empirically documented, that turns an apparent victory into a real loss.
The right reflex
Name the manoeuvre: said out loud, a technique loses most of its power.
Never do this
Reacting emotionally instead of coming back to the facts.
3.7/10 tactical potential High vigilance Documented school
Master this technique in real situations?
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