Reaction Time by Age: Are Older Gamers Slower?

Yes, reaction time gets slower with age. But for a simple click the change is small, it starts earlier than most people think, and it's much larger for reactions that involve a choice. That last part matters for gamers, because almost every reaction in a game is a choice.

Reaction time by age: what large studies found

These are the studies with large samples that measured speed directly:

Study	Who and what	Age finding
Woods et al. (2015a)	1,469 adults aged 18–65; press a button when a target appears	Simple reaction time rose about 0.55 ms per year
Woods et al. (2015b)	1,466 adults aged 18–65; press one of two buttons depending on the target	Choice reaction time rose about 2.8 ms per year (1.9 ms in a second group aged 18–82)
Der and Deary (2006)	7,130 UK adults; simple and four-choice reaction time	Simple reaction time showed little slowing until about 50; choice reaction time slowed throughout adulthood
Hartshorne and Germine (2015)	About 48,500 people tested online, plus standard test norms	A processing speed task peaked in the late teens; working memory around 30; vocabulary much later
Thompson, Blair and Henrey (2014)	3,305 StarCraft 2 players aged 16–44; one replay each	In-game response speed started slowing at about 24

In Woods' simple task the average was 231 ms (213 ms once hardware delay was removed). At 0.55 ms per year, someone at 40 would on average be about 12 ms slower than at 18. That's smaller than the gap between a 60 Hz and a well-tuned high-refresh setup (how much refresh rate matters).

The evidence on when the decline starts is mixed. Woods found a gradual slope from 18 onwards; Der and Deary found simple reaction time nearly flat until middle age. Different tasks, equipment and samples explain some of that. What both agree on is the size: for simple reactions, a few tens of milliseconds at most across a working life.

Choices slow down more than clicks

The bigger age effect is in decisions. In Woods' choice task the age slope was about five times steeper than in the simple one, and over 80% of that slowing came from the central step of picking a response, not from seeing the target or moving the finger. In their simple task, the time to detect the target (about 131 ms) didn't change with age either; the extra time there came from motor output.

Over 20 years, 2.8 ms per year adds up to roughly 55 ms. That's the part that reaches games. Dodging, Flashing or cleansing means recognizing a threat and choosing one of several responses, which is why a good reaction time for gamers is always slower than a colour-change click.

One caveat applies to every study above: they're cross-sectional. They compare different people of different ages at one moment, not the same people as they age, so generational differences can't be fully ruled out.

The StarCraft 2 study: decline at 24

Thompson, Blair and Henrey measured "looking-doing latency": how long a player takes to act after moving their view to a new part of the map. It's a self-paced response inside a real game rather than a lab reaction, and it started slowing at about 24 (their uncertainty range was 20–29). As an illustration, they estimated that a 39-year-old in the lowest league would be about 150 ms slower per cycle than an otherwise equal 24-year-old.

Two more findings matter here. Skill didn't protect against the slowing: it showed up across leagues. But older players played differently. They used more hotkeys and simpler mechanics, which the authors read as offloading work to the interface. In their words, experience "allows one to compensate for these declines indirectly."

The authors flag the limits: one replay per player, a 99% male volunteer sample, no one over 44, and an exploratory compensation analysis. We gave this study one line in Can You Train Reaction Time?; this is the fuller picture.

What experience makes up for

The classic example comes from typing. Salthouse (1984) tested typists aged 19 to 72, chosen so that age and typing speed weren't correlated. The older typists were slower on choice reaction time and finger tapping, yet typed just as fast. Their trick was looking further ahead in the text, so each keystroke was prepared earlier.

The same idea works in a MOBA:

• React to the earliest cue. A cast wind-up can last a quarter of a second, far more than a decade of choice-reaction slowing costs (about 20–30 ms in Woods' data).
• Pre-decide. If you already know which way you'll Flash from that bush, the slowest step, choosing a response, is done before the fight starts.
• Time instead of react. When you can see a projectile coming, predicting the impact beats waiting to see it land.

Practice still helps at any age. A meta-analysis of 20 studies by Toril, Reales and Ballesteros (2014) found that video game training improved reaction time, attention and memory in healthy older adults, although only a few of the studies had strong control groups.

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What this means for you

• Compare yourself to yourself. Your median on the same benchmark and setup over time tells you more than a chart of averages by age.
• Fix your setup before blaming your age. Display, input and frame rate can easily cost more than ten years of simple-reaction slowing.
• Train the decision, not the click. Choice speed is where age shows, and it's also where recognition and planning help most.
• Expect a small, gradual change. The studies show slowing measured in milliseconds per year. Experience, game knowledge and better positioning keep adding up.