Measure your reaction time
This simple test lets you measure your reaction time. Who’s faster?
Ruler
Someone to play the game with
Get started
What did you discover?
The fewer centimetres have dropped past your fingers, the faster your reaction time. This is the amount of time your brain needs to process what it has seen and to react.
Reaction times differ from one person to the next. It depends on all kinds of things, such as your age, your lifestyle and practice. Repeat the experiment and see if you can improve your score!