Reaction Time: What It Is, Average Scores & How to Test It
Reaction time is how long it takes you to respond to something you see, hear or feel, measured in milliseconds. For a simple visual cue, healthy adults typically respond in roughly 200 to 300 ms. It varies with age, attention, sleep and the device you test on. You can measure yours in about a minute with a simple reaction time test, then practise and compete in TAPP.
Reaction time guides
What Is the Average Human Reaction Time?
The average human reaction time to a simple visual stimulus is roughly 200 to 300 ms, with sound a little faster. See what studies report, what the number includes and how to test yours.
Read →Reaction timeWhat Is a Good Reaction Time?
A good reaction time for a simple visual test is under about 200 ms; 200 to 250 ms is typical. See the bands, what changes them, and how a TAPP Dodge streak compares.
Read →Reaction timeHow Can You Improve Your Reaction Time?
Practice, sleep, focus and warm-up all affect reaction time. See what research supports, what is unproven, and how to use a reaction game like TAPP to practise and track it.
Read →Reaction timeDoes Reaction Time Change With Age?
Yes. Simple reaction time is fastest in early adulthood and lengthens gradually with age, with more variability later in life. See the pattern, the causes and what you can do about it.
Read →Reaction time in sportWhy Is Reaction Time Important in Sport?
Reaction time decides sprint starts, saves and returns, but expert athletes mostly win by anticipating earlier. See how reaction time works in sport and how to practise responding fast.
Read →Reaction time in padelWhy Is Reaction Time Important in Padel?
Padel is played on a small, walled court with rapid exchanges at the net, so reading the ball early and moving fast matters on every point. See how reaction time works in padel and how to practise it.
Read →Reaction time in gamingWhy Is Reaction Time Important in Gaming?
Reaction time decides duels, parries and dodges in fast games, and input and display latency sit on top of it. See what research says about gamers' reaction times and how to practise.
Read →What reaction time means
Reaction time is the interval between a stimulus appearing and the start of your response. That interval covers three things: perceiving the signal, deciding what to do, and moving. In a simple reaction test the decision is trivial, so most of the time is perception and movement. In a choice reaction test you have to pick between responses, and the added decision makes the interval longer.
It is usually reported in milliseconds (ms), where 1,000 ms is one second. Lower is faster. A single reaction is noisy, so tests average several attempts.
Reaction time is not the same as a reflex. A reflex, like pulling your hand off something hot, happens without conscious processing and is much faster. What games and sports usually call reflexes is really fast reaction time plus accurate movement.
Average and good reaction times
Large studies of simple visual reaction time report averages in the low-to-mid 200s of milliseconds for adults. One precisely timed study of 1,469 adults aged 18 to 65 found a mean of 231 ms, or 213 ms once the hardware delay was subtracted. Auditory reactions are typically a little faster than visual ones.
| Range | How it is usually described |
|---|---|
| Under 200 ms | Fast |
| 200–250 ms | Typical for healthy adults |
| 250–300 ms | Average to slightly slow |
| Over 300 ms | Slower; often attention, fatigue or device latency |
Two guides go deeper: what the average human reaction time is, and what counts as a good reaction time for your situation.
What affects reaction time
- Age: in large adult samples simple reaction time lengthens with age, by about half a millisecond per year in one precisely timed study, and most clearly after around 50 in a UK population survey.
- Attention and arousal: a focused, alert state produces faster and more consistent responses.
- Sleep: short-term sleep deprivation measurably slows reaction time and increases lapses.
- Stimulus type: sound is usually responded to a little faster than light.
- Practice: people get faster and more consistent on the specific task they repeat.
- The device: touchscreens, mice and displays each add tens of milliseconds, so scores from different setups are not directly comparable.
How to measure your reaction time
The standard method is a simple reaction time test: wait for a signal that appears after a random delay, respond as fast as you can, and repeat for several rounds. The random delay stops you from anticipating, and averaging several rounds smooths out lucky and unlucky attempts.
- Use the same device and sit the same way each time so results are comparable.
- Take at least five rounds and look at the average, not the single best.
- Ignore rounds where you tapped early; a good test restarts them rather than counting them.
- Retest at a similar time of day if you want to track change.
TAPP's browser reaction time test does exactly this: five rounds, a random wait, and your average and best in milliseconds.
How TAPP relates to reaction time
TAPP is a reaction and tapping-speed game with global leaderboards. Its Dodge mode is built around reaction: a target appears, you hit it, it moves, and the window to hit the next one shrinks as your streak grows, from 1.5 seconds down to 0.42 seconds. One miss ends the run, and your score is the number of consecutive hits.
That makes TAPP a repeatable way to practise responding quickly and accurately to visual stimuli, and to compare yourself with other players. It is a game and a skill challenge, not a clinical measurement, and TAPP does not claim to improve reaction time or health.
Frequently asked questions
What is reaction time in simple terms?
It is the time between something happening and you responding to it, measured in milliseconds. A quarter of a second, 250 ms, is a typical figure for reacting to a visual signal.
Is 200 ms a good reaction time?
Yes. For a simple visual test, 200 ms or under is on the fast side of the ranges reported in reaction time research, especially on a consumer device that adds its own delay.
Can reaction time be trained?
Performance on a specific reaction task improves with practice, and being rested, alert and warmed up helps on the day. Whether that practice transfers broadly to other tasks is still debated in the research.
How is reaction time different from tapping speed?
Reaction time is one fast response to a signal, in milliseconds. Tapping speed is how many taps you can make in a set time, in taps per second. TAPP measures both, in Dodge and Classic respectively.
Sources
- Woods DL, Wyma JM, Yund EW, Herron TJ, Reed B. Factors influencing the latency of simple reaction time. Frontiers in Human Neuroscience, 9:131, 2015.
- Der G, Deary IJ. Age and sex differences in reaction time in adulthood: results from the United Kingdom Health and Lifestyle Survey. Psychology and Aging, 21(1):62–73, 2006.
- Lim J, Dinges DF. A meta-analysis of the impact of short-term sleep deprivation on cognitive variables. Psychological Bulletin, 136(3):375–389, 2010.
- Jain A, Bansal R, Kumar A, Singh KD. A comparative study of visual and auditory reaction times on the basis of gender and physical activity levels of medical first year students. International Journal of Applied and Basic Medical Research, 5(2):124–127, 2015.