The Full Brain Test

What happens in the eight minutes

Before anything else you are shown eight abstract shapes for fifteen seconds. Then the six tasks run — and they are also the interference that makes the memory test real. At the end, sixteen shapes appear: the original eight mixed with eight new ones, and you mark the ones you saw.

In order, the six tasks are:

• Speed — find a named colour among 2 to 16 squares.
• Memory — repeat a growing sequence of lit squares.
• Focus — the Stroop task: tap the ink colour, not the word.
• Logic — complete a 3×3 pattern grid.
• Flexibility — two rules that keep swapping on one digit.
• Spatial — is the second shape the first rotated, or its mirror?

Why delayed recall is the reason to take the long version

Everything else here exists as a single test too. This one cannot: measuring what stays in memory needs time and interference between seeing and remembering, and a standalone page cannot ask you to wait eight minutes doing nothing.

The six tasks supply that gap honestly, which is why the whole thing costs you about forty-five extra seconds rather than eight extra minutes. Your recall score is hits minus false alarms — marking everything would score zero, as it should.

What you get at the end

• A six-sided chart of your axes, with the raw number printed next to each one.
• A named profile — the shape of your result, not a label for you.
• A suggested game that trains your weakest axis, when one exists for it.
• Your delayed recall card, shown separately rather than as a seventh side of the chart, because it rests on one measurement while every side of the chart rests on a full task.
• A shareable image of the result, generated in your browser.

The price of the short version, stated plainly

Each task is shorter here than on its own page, so the session is a rougher measurement than taking the six tests separately. That is a deliberate trade for a profile you can finish in one sitting.

Because of that, session results are stored separately from your personal bests. A rough number never competes with a careful one, and your best scores on the single tests stay untouched.

No percentiles, and why

You will not see you beat 78% of people anywhere on this site. We have no population sample, the tasks are our own rather than standardised instruments, and browser timing varies by device. A percentile would look precise and be invented.

What you get instead is a comparison that is actually sound: you against your own earlier sessions, on the same device. The full reasoning, with sources, is in the methodology.

⚠️ What this is not

It is not an IQ test, not a clinical screening tool, and not a diagnosis of anything. It is six browser tasks with the limits of browser tasks, built to be interesting and honest rather than flattering.

Is it free, and is there anything to install?

Free, in your browser, nothing to install, no sign-up. Signing in is optional and only saves your sessions so you can compare them later.