Once you have read the instructions below:
Instructions
You will need JavaScript enabled to run this experiment.
The traffic light will change from red to green.
The reaction timer will test your reaction time to the light turning green.
It tests each hand 3 times and also records the averages of your second 2 goes.
Good luck!
You can also access datasets of reaction times collected by CensusAtSchool in the UK, New Zealand and South Australia.
Teachers resources
For more details see Teachers' Notes: