Working Memory — Updating
You will hear a series of numbers spoken aloud. Listen carefully — you will not know how long the list will be.
When the list stops, the screen will tell you how many of the final numbers to recall. Enter them in the order you heard them.
You earn 1 point for each digit you place in the correct position. You do not need to get all of them right to earn points.
Difficulty increases as you progress. The test will end early if you score imperfectly on 3 consecutive items.
You hear: 7 — 4 — 1 — 9 — 0 — 7 — 5 — 2 — 8 — 3 — 1 — 5
The screen asks for the last 4 digits.
Correct answer: 8 3 1 5 (4 / 4 points)
If you entered: 8 3 7 5 you'd still earn 3 / 4 points.
Ensure your volume is turned up. The test uses text-to-speech.
No numbers will be shown on screen — audio only.
Item of
Press Start when you are ready to listen.
| Metric | Value |
|---|---|
| Scoring | 1 point per digit in correct serial position (partial credit) |
| Scaled Score | Mean = 10, SD = 3 (range 1–19) |
| Discontinue | After 3 consecutive imperfect scores |
| Typical Capacity | 3–4 items (healthy adults) |
| Level (Probe) | Typical Per-Digit Accuracy |
|---|---|
| Last 3 | ~85–95 % |
| Last 4 | ~70–85 % |
| Last 5 | ~55–70 % |
| Last 6 | ~45–60 % |
| Last 7 | ~35–50 % |
Research benchmarks from Bunting, Cowan & Saults (2006, QJEP) and Cowan et al. (2005, Cognitive Psychology, 51, 42–100). WAIS-V scaled scores use proprietary age-based norm tables (Pearson, 2024) — the estimate above is approximate.
Submit your results anonymously to help build normative data. No personally identifiable information is collected.