Memory Match
Flip the cards two at a time and find all eight pairs as fast as you can.
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About this test
The pairs game has been played for a very long time with nothing but a deck laid face down on a table, and it remains one of the few games where a six-year-old regularly beats an adult. The reason is well understood: it doesn't measure knowledge or logic, it measures visuospatial working memory — the ability to hold what is where for a few dozen seconds.
What separates a strong player isn't raw memory, it's method. Slow players flip a card, fail to match it, and move to a different area, accumulating scattered information they then forget. Fast players explore in a strict order and encode position rather than picture: third cell of the second row, not "the strawberry".
The second lever, often missed: when your first flip reveals an unknown card, the useful reflex is to flip another unknown card rather than a known card that doesn't match. You buy two pieces of information for the price of one turn instead of one.
How it works
The clock starts on your first flip and stops when the eighth pair is found. Total time is measured, mistakes included: every wrong pair costs roughly seven tenths of a second on screen. The 0-100 score starts at 100 seconds and maxes out at 15 seconds.
This test is provided for entertainment purposes only. It is not a diagnosis or professional advice.