
The Human Side of Investing: Behavioural Lessons from the Ultimatum Game
June 27, 2026 | By the Elystar Team
Traditional, or neoclassical, economics assumes that individuals make rational decisions. Investors are expected to evaluate alternatives objectively, maximize utility, and consistently act in their own economic self-interest.Reality is often more complex. Investment decisions are influenced not only by logic and analysis, but also by emotions, cognitive biases, past experiences, and social influences. Investors do not make decisions in a vacuum. They interpret information through the lens of trust, fear, confidence, regret, fairness, and personal experience.For affluent individuals and families, these behavioural forces can become even more significant. Wealth often represents far more than financial capital. It reflects years of effort, personal identity, family legacy, future aspirations, and the responsibility of stewardship across generations.One of the most influential experiments illustrating human decision-making is the Ultimatum Game. Here is how it works.One person receives ₹100 and decides how much to offer another person. The second person has only two choices:- Accept the offer, in which case both people receive the proposed amounts.
- Reject the offer, in which case neither person receives anything.
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