Reaction Time guide
Wait for the colour to change, then click as fast as you can. Several rounds average into a reaction time in milliseconds to compare on the leaderboard.
How to play Reaction Time
- 5 attempts
- Random start delay
- Lowest average wins
Goal
Click the moment the screen changes, and find out how your reflexes compare.
How to play
- Wait while the screen holds its starting colour. The delay is randomised, so it cannot be anticipated.
- The instant it changes, click or press a key.
- Clicking before the change is a false start and that attempt does not count.
- The test runs over five attempts and reports your average.
What is being measured
This is simple visual reaction time - the gap between a stimulus appearing and your movement beginning. Most people land between 200 and 300 milliseconds, and roughly a fifth of any single result is noise, which is why the score is averaged over several goes.
Scoring
- A lower average time is better, and your result is shown as a percentile against other players.
- Anticipating rather than reacting shows up as false starts, not as a better score.