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How well-calibrated are you?
Good decision-makers aren’t the most confident — they’re the ones whose confidence matches reality. Answer ten quick claims, say how sure you are, and see whether you’re overconfident, underconfident, or sharp.
The Great Wall of China is visible from space with the naked eye.
How sure are you?
What is calibration?
Calibration is the match between how confident you feel and how often you’re actually right. If you’re 90% sure about things that happen 90% of the time, you’re well-calibrated. Most people aren’t — we’re systematically overconfident, especially on the decisions that matter. That gap is invisible until you write down a prediction and check it against what actually happened.
Why it makes you a better decision-maker
The people who forecast the world most accurately share one habit: they record their confidence up front, then honestly score the outcome. In one study, managers who kept a structured decision journal improved their forecasting accuracy by roughly 19%. This quiz is a taste of that loop on trivia. Doing it on your real decisions — job offers, big purchases, hard calls — is where it changes your life.
That’s what Decize does: it’s a decision journal that logs the call you made, how sure you were, and how it turned out — then shows you, over time, exactly where your judgment can be trusted.