The average adult reacts to a visual signal in about 250–273 milliseconds. Reaction speed peaks in your early twenties, and then slows very gradually — roughly 2–6ms per decade. Here is what typical (median) results look like by age group:
| Age | Typical visual reaction | Note |
|---|---|---|
| 6–9 | ~350ms | nervous system still developing |
| 10–13 | ~320ms | improving fast |
| 14–17 | ~280ms | near-adult speed |
| 18–24 | ~250ms | lifetime peak |
| 25–34 | ~255ms | virtually unchanged |
| 35–44 | ~265ms | slight decline begins |
| 45–54 | ~280ms | still fully functional |
| 55–64 | ~300ms | practice offsets a lot |
| 65+ | ~330ms+ | varies widely by fitness |
Anything under 200ms on a tap test is elite territory — professional esports players and sprinters live around 150–190ms. (In athletics, a sprint start faster than 100ms is ruled a false start, because that's considered humanly impossible.)
Genetics set the floor, but you can shave off 10–30ms: sleep well (fatigue adds ~20ms+), warm up before testing, reduce distractions, and practice the specific task — your brain literally automates familiar signals. Caffeine helps a little; alcohol does the opposite.
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