Memory Test

This is a visual working-memory test in the classic Corsi / Simon style. A square flashes, you repeat it. Then two squares flash, then three, and the sequence grows by one every time you get it right. The level you fail on is your span — the number of items you can hold in working memory and reproduce in order.

Typical adult visual span is 5 to 9 items; the often-quoted "seven plus or minus two" comes from George Miller's 1956 paper on exactly this kind of task. Scores above 10 usually mean you have started chunking — grouping the squares into shapes or paths rather than remembering them one by one, which is the single most effective memory technique there is.

Results vary a lot with sleep, caffeine, stress and distraction, so treat one run as noise and a five-run average as a real score. Your best score is stored in your own browser only; nothing is uploaded and there is no account. This is a game, not a clinical assessment — if you are genuinely worried about your memory, speak to a doctor.