Seven short tests. One shape.
Your Cognitive Fingerprint is the pattern across seven things we can actually measure — how much you hold in mind, what you notice, how fast you match, how you turn shapes over in your head, how many words you recognise, how quickly you do straightforward sums, and whether you can hold a rule while something fights it. About twenty minutes for all seven, and you do not have to do them in one sitting.
The shape appears as you go. Take them in any order — each one adds an arm, and the seventh completes it.
Your Cognitive Fingerprint
What the arms are
| Arm | You | The task's range |
|---|
What the number is, and what it is not
It is how far you got through what these tasks can measure. Each arm runs from what pure chance produces up to the ceiling the task was built with, and the number is the average of the arms. The phrase printed under the number names how many arms it was built from, because a four-arm link and a seven-arm one are different measurements and must never be read as the same one.
It is not a percentile and it is not a comparison with other people. We have measured nobody — our reference sample is zero — so there is no "average person" here for you to be above or below. The full arithmetic is published, including the one constant we chose rather than derived.
Take one again, or take another
How the shape is drawn
Seven arms, one per domain. Each arm is a position between two published points: what guessing alone produces, and the ceiling the task was built with. Nothing on this page is derived from anybody else's results.
| Arm | Floor | Ceiling | Where it comes from |
|---|---|---|---|
| Working memory | 0 digits | 14 digits | The digit span task runs from 3 digits to a ceiling of 14. No guessing is possible, so the floor is a true zero |
| Pattern recognition | 2 grids | 18 grids | Eighteen grids of nine tiles, so chance alone yields two |
| Processing speed | 0 matches | 60 matches | A design decision, not a measurement. The task is a rate with no natural ceiling, so we declared one: 60 correct is a match every 1.5 seconds sustained for the full ninety. It is not derived from anyone's performance |
| Spatial reasoning | 2.4 items | 12 items | Twelve items of five options, so chance alone yields 2.4 |
| Verbal comprehension | 4 words | 20 words | Twenty words of five meanings each, so chance alone yields four |
| Numerical facility | 0 sums | 30 sums | A declared ceiling, not a measured one. Answers are typed rather than chosen, so guessing yields nothing and the floor is a true zero. Thirty is one sum every three seconds for the full ninety — a rate has no natural maximum, so somebody had to choose one |
| Attention | 12 correct | 48 correct | Forty-eight trials of four directions, so pressing at random yields twelve — verified at 11.99 over 200,000 simulated runs. The ceiling is the trial count, which is not a choice |
The arms are weighted equally, and that is a choice rather than a finding. Weighting them equally says the seven domains count the same towards this number. We have no evidence that they should, and no evidence that they should not — so we picked the option we can explain in one sentence, and we are telling you it is a pick. The reasoning, and what would let us do better, is set out in full.
Where your scores live
In the address bar, and nowhere else. As you finish each test its score is added to the link. Nothing is written to your device and nothing reaches our server — the privacy notice covers exactly what does, which is two optional button presses and no results at all.
Two consequences worth knowing. Close the tab without copying the link and the shape is gone; we cannot recover it because we never had it. And anyone you send the link to can see your scores, because they are in the link — which is the trade for us not holding them.