Prospect Theory
People evaluate risky outcomes relative to reference points rather than absolute wealth alone.
The Mechanism: Prospect theory models how people evaluate gains and losses relative to a reference point, with probabilities often weighted nonlinearly. Loss aversion is a prominent finding, but its size varies across decisions and individuals.
The Philosophical Pivot: A change can feel like a loss even when the outcome is objectively beneficial, because people compare it with what they expected or already possess.
The Horizon: The framework influences economics, policy, and interface design. It can help explain behavior, but it can also be used to frame choices in ways that exploit predictable sensitivities.
A preference shaped by reference points is not necessarily irrational; it may reflect uncertainty, past investment, or a reasonable desire for security.
The way a choice is presented can change what feels at stake before the numbers change.
What counts as a gain or loss depends partly on the reference point we bring to the choice.
What am I afraid of losing, and would that loss still feel decisive if I had begun from a different reference point?