Reaction Time by Age: Average Scores from 10 to 80+ (With Data)

If you're under 25, you're probably faster than 90% of people. If you're over 60, your reaction time is roughly 30–40% slower than your personal best — but that's not the whole story.

Reaction time follows one of the most-studied curves in cognitive science. It rises rapidly through childhood, peaks in the early-to-mid 20s, plateaus through the 30s, and gradually slows from your 40s onward. Decades of data — from Welford (1980) to Der & Deary (2006) to modern online benchmark sets of millions of trials — all agree on the shape.

This article walks through the exact numbers at every age, separates real biological change from things you can actually train, and shows you what a "good" score looks like for someone your age.

The curve in one chart

Visual reaction time across the lifespan, based on pooled research data:

Data: Aggregated from Der & Deary (2006), Welford (1980), Fozard et al. (1994). Visual reaction time only. Audio is typically 30-40ms faster.

A few patterns jump out:

Kids react slowly because their brains aren't done yet. A 7-year-old averages 350+ ms on a simple visual reaction test. By 12, they're at 270 ms. Most of that 80 ms gain comes from myelination — the insulation that speeds up signals along your nerves — which finishes in the prefrontal cortex around age 25.
Your 20s are the peak. Visual reaction time hits its low around 220–225 ms in the early 20s. This is the biological floor for healthy adults doing a simple "see green, click" task.
The 30s are a plateau, not a decline. Despite what you've heard about reflexes "going downhill at 30", the actual data shows a flat plateau from about 25 to 40. The decline is real but small (a few ms per decade).
The 60s are when things accelerate. After 60, reaction time slows roughly 5–8 ms per year. This is where you start seeing big practical effects — including elevated driving crash risk and slower hazard response.

Why reaction time changes with age

Three things actually slow down. They're not equal:

1. Neural conduction speed (the smallest factor)

Your nerves don't conduct signals significantly slower in your 60s than in your 20s. The myelin insulation degrades a bit, but only by a few percent. This is responsible for maybe 5–10 ms of the slowing you see.

2. Cognitive processing time (the biggest factor)

When the screen turns green, your visual cortex identifies the change, the prefrontal cortex decides to act, and the motor cortex fires the command. This decision pathway is where most age-related slowing happens. By age 70, this processing step takes ~50 ms longer than at age 25.

A useful way to see this in action: simple reaction tests (just "click when green") slow gradually with age, but choice reaction tests (like our Stroop test where you have to inhibit a wrong response) slow much faster. The harder the cognitive demand, the bigger the age gap.

3. Motor execution time (a small but real factor)

The actual hand movement takes about 30–60 ms once the brain has decided to act. This stays remarkably stable through your 50s, then slows modestly because of small changes in motor cortex efficiency and fine-motor control.

Where do you actually sit?

Here's a percentile chart for healthy adults age 20–40, based on aggregated test data. Find your score on the x-axis — the height of the curve tells you how common that score is.

Distribution of visual reaction time scores in adults aged 20–40. Median ≈ 250ms. The long right tail reflects fatigue and inattention.

For practical reference:

| Your average | What it means at age 20–40 | |---|---| | Under 200 ms | Top 5%. Esports / athlete territory. | | 200–230 ms | Top 25%. Above average, well-trained. | | 230–270 ms | Average. Most healthy adults land here. | | 270–310 ms | Below average. Often fatigue or distraction. | | Over 310 ms | Bottom 10%. Worth checking sleep, vision, posture. |

These ranges shift with age. A 65-year-old averaging 290 ms is above average for their age group, even though that score would be unremarkable at 25.

Audio vs visual at every age

One pattern holds at every age: audio reaction time is consistently 30–40 ms faster than visual reaction time. This isn't training — it's biology. Sound reaches your auditory cortex in 8–10 ms versus 20–40 ms for light through your visual cortex.

You can test this yourself with the audio reaction time test and compare it to a standard visual test. The 30 ms gap holds whether you're 15 or 75.

What about specific tasks like driving?

Real-world driving reaction time is more complex than lab reaction time because it includes perception time (recognizing a hazard) on top of neural reaction time. The age-related slowing of perception is much steeper than the slowing of pure motor reaction.

Common research benchmarks for brake reaction time (seeing a stop sign, moving your foot):

Age 20: ~190 ms
Age 40: ~230 ms
Age 60: ~280 ms
Age 75: ~370 ms

The jump after 60 is one reason insurance premiums rise. If you want to see how you stack up specifically on the brake task, try the driving reaction time test — it's the exact stimulus profile used in research studies.

Can you fight the curve?

Yes — and the evidence is unusually strong.

Things that work

Aerobic exercise. 30 minutes of moderate aerobic exercise, most days, produces measurable improvements in reaction time and cognitive processing speed at every age. Effects are largest in adults over 50, where randomized trials show 10–15 ms improvements after 8–12 weeks.
Sleep. This is the largest single modifier of reaction time at any age. 24 hours awake adds 100–200 ms to your average score — bigger than the entire 40-year aging curve. Most people massively underestimate this one.
Daily practice on the specific task. Reaction time on the exact task you train improves 30–60 ms within 2–4 weeks. The improvement is task-specific (training visual reaction doesn't help audio reaction much), so train what matters to you.
Cognitive load reduction. Lower stress, fewer distractions, and minimal multitasking all show real effects on reaction time scores.

Things that don't work as well as advertised

Brain training apps show small task-specific gains but generally don't transfer to broader reaction time improvements.
Caffeine helps short-term (5–15 ms) but tolerance builds quickly.
Nootropics: most claims aren't backed by RCT-level evidence in healthy adults.

Things that hurt (often more than aging)

Poor sleep
Alcohol (even 1 standard drink adds 30–80 ms; 2+ adds 100 ms+)
Sedentary lifestyle
Vision problems (often correctable)
Reading glasses while gaming/driving (focal mismatch slows reaction)

What about kids and teens?

Most parents are surprised that their 10-year-old reacts almost 100 ms slower than they do. This is normal. The prefrontal cortex — which handles the "decide whether to act" step — doesn't finish maturing until about age 25. Until then, kids show:

Slower simple reaction times (especially under 12)
Much slower choice reaction times (the cognitive gap is even bigger)
Higher variability (some trials fast, some slow, large standard deviation)

This is why teenage drivers are statistically more dangerous than 25-year-old drivers despite having faster simple reaction times in lab settings. The hazard recognition step is what lags.

The takeaway

Reaction time aging follows a predictable curve, but you have far more leverage than the curve suggests. A well-rested, fit 60-year-old will out- react an exhausted, sedentary 30-year-old almost every time.

Your reaction time at any age is the sum of:

Biology (~70% of the curve): mostly fixed
Lifestyle (~25%): sleep, exercise, alcohol, vision — all controllable
Practice (~5%): small but real, task-specific gains

The biology you can't change. The other 30%? That's why a 50-year-old can realistically score in the top 25% if they want to.

If you want to see where you actually land today, our suite of tests covers the main reaction pathways: visual, audio, driving brake response, and Stroop interference. Run them in the morning when you're well-rested for an accurate read.

Sources: Der & Deary (2006), Psychology and Aging; Welford (1980), Reaction Times; Fozard et al. (1994), Journal of Gerontology; Deary et al. (2010), Intelligence; AAA Foundation for Traffic Safety driving reaction benchmarks.