MENTAL MODEL · M3614

Fairness Preferences

BehaviormediumPsychology

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Updated 2026-08-05

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INTRODUCTION

English translation pending.

CORE DEFINITION

A finding from behavioral and experimental economics, developed through ultimatum and dictator game research by Werner Guth, Ernst Fehr, and Klaus Schmidt, among others. Its core proposition is that utility depends on relative outcomes rather than only on absolute personal gain: people exhibit inequality aversion, preferring a smaller but fairer share to a larger but unfair one, and are willing to incur cost to punish violations. The key constraint is that fairness preferences are heterogeneous and context dependent; they strengthen when the counterpart is seen as responsible for the outcome and weaken in market-like settings with many anonymous traders.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Incentive design: check whether a proposed split reads as fair to those who must accept it, not only whether it is efficient. - Rejection forecast: predict that an offer well below the counterpart's reference point will be refused even at a cost to them. - Procedure defense: when outcomes cannot be equalized, argue the fairness of the process that produced them.

anchor

Anchor fast decisions

Fairness preferences change behavior because a person's evaluation of an outcome includes the comparison between shares, not just the share itself. When the gap is large, the disutility of the inequality can exceed the utility of the money on offer, so rejecting becomes rational for the responder. Punishment of unfairness is credible for the same reason, since it restores the comparison, and the threat of it constrains the proposer before any offer is made.

MINIMUM ACTION

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Practice this model in one real situation:

Write down the reference point each party will compare against, such as the previous split or an industry norm. 2. Predict where your proposal falls relative to that reference before announcing it. 3. Test the split with someone who will bear it, not only with those who designed it. 4. If shares cannot be equal, explain the process that produced them and apply it consistently. 5. Expect and plan for costly rejection when the gap is large.

Check to track your progress (stored locally)

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Source support: Explicit

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en.wikipedia.orghttps://en.wikipedia.org/wiki/Social_preferenceZH · Explicit
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