The Ultimatum Game

Misconception vs. Truth

Misconception:
You choose to accept or refuse an offer based on logic.

Truth:
When it comes to making a deal, you base your decision on your status.

Status and Social Reasoning

  • Complex Social Reasoning: Human decisions in social situations are influenced by millions of variables and instinctive predictions rather than pure logic.
  • Importance of Status: Offers and rejections in social transactions are influenced by perceived status and reputational concerns, not just by logical outcomes.

The Ultimatum Game

  • Experiment Setup: One person offers a share of a given amount of money to another. If the offer is rejected, both get nothing.
  • Human Responses: Offers less than 20% of the total amount are typically rejected. Most people offer closer to half to ensure mutual benefit.
  • Logical vs. Emotional Decisions: While a logical mind would accept anything above zero, humans factor in fairness and social standing.

Evolutionary and Emotional Factors

  • Evolutionary Background: In small ancestral groups, maintaining social status and fairness was vital for survival.
  • Status Interpretation: The amount offered is seen as an estimation of the other person's status. Accepting less than a fair share can lead to social inferiority.
  • Low Serotonin Levels: People with lower serotonin demand more money to feel satisfied, influenced by a sense of lower status.

Rule Variation and Real-World Implications

  • Guaranteed Share for Proposer: When proposers keep their share regardless of acceptance, they tend to offer less (around 10%).
  • Everyday Situations: Perceived status influences decisions in various life contexts like asking for raises, making social moves, or performing publicly.

Ensuring Fairness

  • Altruism and Revenge: The prospect of revenge for unfair offers encourages fairness and contributes to maintaining social harmony.
  • Perceived Fairness: People are willing to forego benefits to ensure fair treatment and social security in the future.