Reaction questions, fixes and result guides.
Practical answers for common reaction problems, confusing results and setup questions — with a direct path back to the live test.
What is an average human reaction time?
Simple visual reaction times are commonly measured in a few hundred milliseconds, but browser, display and input latency are included in an online result. Compare repeated runs on the same setup instead of treating one number as a biological measurement.
Why does my reaction time vary so much?
Sleep, attention, anticipation, display timing, mouse latency and random target delay all affect a run. Use several attempts and focus on your average or median rather than one exceptionally fast click.
Can monitor refresh rate affect reaction-time results?
Yes. The visual target can only be presented on a rendered frame, so a higher or more stable refresh rate can reduce part of the display-side delay included in a browser test.
What happens if I click before the target appears?
The round shows Too Soon and restarts without adding a result. Earlier completed rounds are preserved.
What happens if I do not click the target in time?
The target shrinks and disappears after its live window. That round is recorded as a miss and the next target is prepared automatically.
Why does this reaction test use a small target instead of a full green screen?
The target mode measures visual detection plus a small pointer response, which is more game-like and visually engaging. It should be compared with repeated runs of the same mode rather than laboratory reaction equipment.
Can monitor refresh rate affect a browser reaction test?
Yes. The target can only appear on a rendered frame, so display refresh, compositor timing and input latency contribute to the measured result.
How accurate is this reaction tool?
Display latency, input latency, browser focus and anticipation can all change reaction results.
What should I do if the reaction result looks wrong?
Keep the tab visible, avoid pre-clicking, use the same mouse or touch input for comparisons, and make sure browser zoom stays unchanged. Display refresh and input latency can affect the measured number.