The honest thinking test
First round: 11 puzzles, about 5 minutes. Then you decide whether to go on.
There are four rounds in total — 44 puzzles in five kinds (patterns, number series, odd-one-out, memory, quick look), about 20–25 minutes altogether. You don't have to do them in one go: on this device you can pause any time and pick up exactly where you left off.
Your result is free and lives behind an anonymous link. We are in the calibration phase: your placement is explicitly provisional, and your (anonymous) run helps calibrate the test.
Important: not sure? Guess! Skipping is never better than guessing.
About the time limit, so it comes as no surprise: every puzzle has one (two minutes for patterns, less for the short kinds). It only exists to discourage outside help — being faster gains you nothing. If the time does run out, the puzzle counts as unsolved.
You can stop at the end of any round. Every round contains all five puzzle kinds and starts easy — the later rounds are somewhat harder than the early ones, though. A bar shows you live how meaningful your result already is; each further round narrows the uncertainty range.
Optional details — they improve comparison groups later (no answer: compared with everyone):
Not a clinical test, no diagnosis, not for job applications. Details on the method page after your result.