Evaluate each option against your criteria before comparing options to each other
Score options independently first — so the comparison set can’t retroactively redefine what good looks like.
Key takeaways
- What it is: Score options independently first — so the comparison set can’t retroactively redefine what good looks like.
- Why it works: The decoy effect operates by changing the comparison context: the decoy makes one option look relatively better by providing an easy "win." If you have already decided what you want (your criteria, your minimum acceptable standards, your priorities) before you see the full set of options, the decoy cannot reframe the question. This is the "pre-mortem for preferences" — locking in the criteria before the choice set is presented.
- Evidence: Backed by observational / correlational evidence.
- Avoid: Writing down criteria but making them vague enough ("good value") that they can be satisfied by the decoy-inflated option — criteria must be specific enough to be applied independently.
Why it works
The decoy effect operates by changing the comparison context: the decoy makes one option look relatively better by providing an easy "win." If you have already decided what you want (your criteria, your minimum acceptable standards, your priorities) before you see the full set of options, the decoy cannot reframe the question. This is the "pre-mortem for preferences" — locking in the criteria before the choice set is presented.
How to do it
- 1Before looking at options, write down the two or three most important criteria for this decision and your minimum acceptable threshold on each.
- 2Evaluate each option independently against those criteria — not against the other options.
- 3Score or rank based on independent criteria scores.
- 4Only then compare total scores across options — the comparison set can’t shift the criteria retroactively.
What the evidence says
ObservationalHuber, Payne and Puto (1982) showed that adding a dominated decoy increased preference for the dominating option, violating preference independence. Evaluating options against pre-stated criteria is a normative decision-quality technique that structurally prevents context-dependent preference construction.
Honest caveat: Pre-specifying criteria requires enough domain knowledge to know what matters; in truly novel choices, criteria may emerge from the comparison rather than being knowable in advance.
- — Huber, Payne & Puto (1982), Adding asymmetrically dominated alternatives: Violations of regularity and the similarity hypothesis, Journal of Consumer Research
Common mistake
Writing down criteria but making them vague enough ("good value") that they can be satisfied by the decoy-inflated option — criteria must be specific enough to be applied independently.
IX Coach asks you to articulate what you’re optimizing for before presenting options or alternatives, preventing the comparison set from constructing your preferences for you.
Practice this with IX Coach →