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Decision traps: would your first answer hold up?

Small decisions can hide a tempting wrong turn. Work through short situations, check your first answer, and see the reasoning at the end. About 5–8 minutes, free, no sign-up.

By the Helibrain teamReviewed by Robert, biophysics PhD candidatePublished Last reviewed

Catch the tempting answer

Take your time with 17 original questions. Some ask for a choice, others ask how sure you are. Explanations come at the end.

Use Tab and arrow keys to choose, then Next. There is no time limit.

How the game works

There are 17 original Helibrain questions. Choose using only the information given. Some questions also ask how confident you are. There is no time limit; you can go back before submitting. Explanations appear after your result so they do not give away later answers.

The questions use five formats: consistency across positive and negative descriptions, ignoring money or time that cannot be recovered, following an explicit decision rule, matching confidence to correctness, and checking a tempting first answer.

How your result is scored

The service gives each format equal weight in one overall game score. Framing pairs reward a consistent choice. Rule, sunk-cost and reflection questions reward the best answer under the stated assumptions. Confidence questions reward correct, confident answers and penalize confident errors more than uncertain errors. A confidence level by itself does not earn a high score.

The result is compared with other players’ first eligible runs using broad bands. Before enough people have played, the page shows how many runs are available. The comparisons describe this game’s visitors, not the population.

We show explanations for individual questions, but do not label you as having a particular bias from a few answers. A short run is too little evidence for a stable personal profile of each bias.

The science behind the formats

The Adult Decision-Making Competence battery studies several aspects of decision making, including framing, sunk costs, decision rules and confidence [1]. Cognitive-reflection research studies the tendency to reconsider an initially appealing answer [2]. These are the ideas behind the formats here.

Every question here was written for Helibrain. We have not copied the A-DMC questionnaire or the original Cognitive Reflection Test. Their published validity and reliability do not transfer to our questions. This is an educational decision game, not a validated A-DMC score, an IQ score or a prediction of your life decisions.

Frequently asked questions

Can I improve by playing again?

Knowing an explanation will often make the next attempt easier. That is useful for learning the puzzle, but does not prove that a general decision skill improved. Treat repeat scores as practice.

Why ask how sure I am?

The confidence questions compare your certainty with whether your answer was right. A single short set cannot precisely measure overconfidence. That format contributes to the combined result; it does not become a separate personal label.

Is it free?

Yes. Questions, explanations and your result are free. We save runs with the usual test context described in our privacy policy to build comparisons. No sign-up is needed.

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Sources

  1. Bruine de Bruin W, Parker AM, Fischhoff B (2007). Individual differences in adult decision-making competence. Journal of Personality and Social Psychology 92(5):938–956. doi.org/10.1037/0022-3514.92.5.938
  2. Frederick S (2005). Cognitive reflection and decision making. Journal of Economic Perspectives 19(4):25–42. doi.org/10.1257/089533005775196732

How we made this page: written by the Helibrain team from the studies listed above, and reviewed by Robert (biophysics PhD candidate) on 4 November 2026. We update it when the sources change.