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Core~2 min
The Ultimatum
Fairness vs self-interest
The Concept
The Ultimatum Game pits rational self-interest against an innate sense of fairness.
The Science
Rejection of unfair offers is irrational under pure self-interest but adaptive for enforcing cooperation norms.
You'll face 1 decision. There are no right answers shown in advance — choose as you genuinely would. Your responses build your Decision DNA.