Memory
Chimp Test
Numbers appear scattered across the screen. Click 1, and the rest turn blank — now click them in order from memory. Chimpanzees at Kyoto University routinely beat humans at this exact task.
Numbers are scattered across the board. Click 1 — the rest turn blank — then click them in order from memory. Starts at 4 numbers and adds one each level. Three strikes ends the run.
What this measures
The chimp test measures spatial working memory under a masking constraint, and it is famous for a humbling reason: in Tetsuro Matsuzawa's Kyoto experiments, the chimpanzee Ayumu recalled the positions of nine numerals after seeing them for a fraction of a second, outperforming university students. Success requires binding each numeral to its location in one glance — once you click 1, only your mental map remains. It is one of the clearest demonstrations that human cognitive superiority is not uniform across tasks.
Where this shows up in real life
Rapid spatial capture shows up in team sports, air-traffic-style monitoring, and any job that flashes multiple locations at once. Humans usually lose to chimps here — which is a useful reminder that “smart” is not one number.
Score guide
| Rating | Score |
|---|---|
| Exceptional | 13+ numbers |
| Excellent | 11–12 numbers |
| Above average | 10 numbers |
| Average | 8–9 numbers |
| Below average | 7 or fewer |
How to improve
- Plan the full route before clicking 1 — trace 1→2→3 with your eyes until the path feels like a shape.
- Store the path as motion, not as separate positions; a swooping curve survives masking better than a list.
- Take your time before the first click. The timer pressure is psychological — nothing hides until you click 1.
- When a level adds a number, anchor the new digit relative to the existing path rather than restarting your strategy.
Frequently asked questions
Do chimpanzees really beat humans at this?
Yes. Young chimpanzees in the Kyoto Primate Research Institute studies recalled up to nine numeral positions shown for 210 milliseconds with about 80% accuracy — performance no untrained human matches at that exposure time. Our version is kinder: numbers stay visible until you click 1.
What is a good chimp test score?
Reaching 9 numbers matches the typical human plateau. Getting past 11 is well above average, and the practical ceiling for most people sits around 13–15 even with practice.
Why are chimps better at this?
One hypothesis is the cognitive trade-off theory: as humans evolved language, we repurposed neural resources that support fast photographic spatial capture. Chimps kept the raw buffer; we got syntax.