Understand the idea
A decision frame presents outcomes relative to a reference point. Tversky and Kahneman demonstrated that equivalent descriptions can shift preferences between certain and risky options. The important comparison holds outcomes and probabilities fixed while changing their presentation. Not every wording difference is an irrational bias: language may also change what people infer about the situation. [S24]
Worked example
In a fictional campus fund, option A guarantees preserving INR 20,000 from INR 60,000. Option B has a one-third chance of preserving all INR 60,000 and otherwise preserves nothing. Reframe these as amounts lost while keeping every probability fixed. Check whether your preference changes and explain why.
Where the idea stops
Do not infer a person's permanent risk preference from one answer. Real choices may include ambiguity, emotion, or information not contained in a simplified experiment. [S24]
Connect it
Economics and business: pricing communication, choice architecture, and consumer autonomy.
Go deeper
Why must you establish equivalence before claiming a framing effect?
Sources
Amos Tversky and Daniel Kahneman · Research reference · Date: 1981-01-30
Original experiments on changes in choice under equivalent gain/loss descriptions.
Link checked 2026-10-17 · Original six-page paper accessed through Stanford course materials.