Digit Span Memory Test
Test your verbal working memory. A sequence of digits flashes on screen for a few seconds; when it hides, type back exactly what you saw. Each level adds one digit. Two trials per level — pass at least one to advance, fail both and the test ends with your best span. Adjust the display time and starting length. Everything runs locally in your browser.
| Level | — | Current length | — | Trial | — |
|---|---|---|---|---|---|
| Best span | — | Attempts | 0 | Correct | 0 |
How it works: the digits show for (display time × length), then hide and the input opens. Type the sequence in order — spacing and dashes are ignored, so "1 2 3" matches "123". Each level is one digit longer than the last. Two trials per level: pass one to advance, fail both and the test ends, reporting your best span (longest sequence you reproduced correctly). Average adult digit span is about 7 ± 2. Runs locally — no data leaves your browser.