Reaction Time By Age
Reaction time follows a predictable life curve. It rises sharply through childhood, peaks in the early 20s, then declines roughly 0.5 ms per year. Knowing your age-adjusted benchmark is the only honest way to compare yourself.
The Full Age Curve
| Age | Average Visual Reaction | Trained Reaction |
|---|---|---|
| 10 | 300 ms | 230 ms |
| 15 | 250 ms | 190 ms |
| 20 | 220 ms | 160 ms |
| 24 (peak) | 215 ms | 155 ms |
| 30 | 230 ms | 170 ms |
| 40 | 250 ms | 185 ms |
| 50 | 270 ms | 200 ms |
| 60 | 290 ms | 220 ms |
| 70 | 310 ms | 240 ms |
| 80 | 340 ms | 265 ms |
Why Reaction Time Declines
Two factors dominate: myelin degradation in the corticospinal tract (slower neural conduction) and reduced dopamine signaling in motor cortex (slower decision). Both are partially reversible with consistent practice.
Training Arrests The Decline
Multiple studies show that adults over 60 who train reaction time 5 minutes daily for 4 weeks regain 15–25 ms — putting them back into a younger benchmark band. The brain remains plastic at every age.
Children And Adolescents
Reaction time matures with the nervous system. Children under 12 are dramatically slower than adults — this is normal and not a sign of any deficit. Most kids see large gains every 6 months simply from neurological maturation.
Frequently Asked Questions
At what age is reaction time fastest?
Around age 24, slightly later for women on average.
How fast does reaction time decline with age?
Roughly 0.5 ms per year after 24, faster after 60. Training can offset most of it.
Can a 60-year-old beat a 20-year-old in reaction time?
Yes if trained vs untrained — a daily-trained 60-year-old beats most untrained 20-year-olds.
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