Chimp Test
Numbers flash briefly on screen, then get covered by white squares. Tap them in order — 1, 2, 3 — from memory.
Based on the Inoue & Matsuzawa (2007) study at Kyoto University showing young chimpanzees consistently outperform human adults at this working memory task. The average human reaches level 5–6. Chimps regularly reach level 9+.
Example — tiles flash with numbers, then go blank
Tap in order: 1 → 2 → 3 → 4 after they're covered