This is called complex reaction time. Are there any other tests that people can do? Yes. There is a simple test you can do with a ruler. The task is to get someone to hold a ruler above your hand and ...

You could carry out a number of investigations to determine the effect of a specific factor on human reaction times. A simple method to measure the effect is to use the ruler drop test.

They will need to record a time when they ... one's thumb is on the ruler in centimetres. And record the distance in the pupil's reaction times chart. Repeat the test five times for each pupil.