Practise one cognitive skill properly

The Lab is organised into categories, but the unit of practice is a single named skill: working memory, perceptual speed, deductive reasoning and so on. Choosing one and staying with it for a week is worth more than sampling the whole catalogue in an evening.

Each lab explains what a question of that type is actually asking. Most wrong answers in this kind of practice come from misreading the task rather than from failing at it, and two minutes of reading removes a surprising share of them.

Nothing here is timed or ranked, and that is deliberate. The page records attempts per skill with your latest and best accuracy and a practice band describing where you are. It is feedback, not a measurement of you against anybody else.

Open your progress and look at the direction rather than the last number. A single attempt is mostly noise; five attempts over a fortnight is a signal you can act on.

The history is in this browser. Export it as PDF, spreadsheet, plain text or JSON from the downloads page, especially before clearing site data or moving to another device.