What shape is your thinking?
Seven short tests — what you hold in mind, what you notice, how fast you match, how you turn shapes over, how many words you know, how you handle numbers, and whether you can hold a rule while something fights it. About twenty minutes for all seven, and they draw a shape that is yours.
No account, no email, nothing to sign up for — and nothing is stored. Every test runs in your browser and your answers never reach us.
Start with the whole set. Take them in any order — each adds an arm to your shape, and the seventh completes it.
Build your Cognitive Fingerprint →About twenty minutes. Or take just one:
The tests, on their own.
Digit span — how much can you hold in mind? Odd one out — nine tiles, one breaks the rule Symbol match — six symbols, ninety seconds Paper folding — fold it, punch it, unfold it in your head Word meaning — how many of these words do you know? Arithmetic — how many can you do in ninety seconds?No account, no email, nothing to sign up for — and nothing is stored: each test runs entirely in your browser and your answers are never sent to us. The full register lists every instrument with its version, its norming rung and its reference sample.
What is here
- The seven domains — what each one is, which test measures it, and which of them have a written explanation yet. The gaps are marked rather than filled.
- Everything we have written — every article in one place, newest first: what each domain is, and why two tests of the same thing give you different numbers
- How BrainScore works — what we measure, how a task becomes a score, what our reference sample currently contains, and what the score cannot tell you
- Claims standards — the language we ruled out in advance, written while nothing was at stake
- Corrections — everything we have got wrong and changed, with dates
- Privacy notice — no cookies, nothing stored, and the one analytics script we do run counts pages rather than people
Where this stands
Honest about its own stage: a handful of tests, and a reference sample of zero people. The register is the only place the count is stated, for a reason this site has now had to correct three times. Every number here says how far you got through what the task itself can measure — never how you compare with anyone else. No percentile, no ranking, no "above average", because we have measured nobody and will not pretend otherwise. The arithmetic behind the Fingerprint number is published in full.
That is stated on every page that carries a result, and it stays stated until it stops being true.