4-minute check

About 4 minutes

4 short tests, 4 different dimensions

Each one measures something different, so at the end you have 4 numbers instead of one. It is a starting point — not a picture of your attention.

Shortest first. Each step measures a different dimension — and each has its own page, if you would rather play just that one.

1. Trail Making Test — scanning speed. Connect the sequence — Part B alternates numbers and letters.
2. Flanker Test — interference control. Read the middle arrow, ignore the four crowding it.
3. Go/No-Go Task — response inhibition. Tap for circles. Hold still for squares — that's the hard part.
4. Multiple Object Tracking — attention breadth. Keep several identical moving dots in mind at once.

It covers 4 of 8 dimensions. That is by design — 4 tests in 4 minutes cannot say much about the other 4. For signed-in players, the chart these runs feed is deliberately left with gaps rather than joined into a tidy shape.
These are the real tests. Nothing here is a shortened demo version — you get the standard free difficulty of each one, so the scores sit on the same scale as every later session.
These are normal sessions. Not a special mode — each run is recorded exactly as if you had played it from that test's own page, and there is no limit on how many times you do it.
A single session is a noisy measurement. One run of anything here tells you how you did in those few minutes — sleep, caffeine and time of day all move these numbers. The point of starting is having something to compare against later.