Reaction Time Test
Time from the colour change to your click. Not monitor input lag — one try is noisy.
This is the time from the colour change to your click, measured with performance.now(). It is not monitor input lag, and one try is noisy.
Worked example
Click to start, wait for the panel to switch to “Click”, then click again. A result of 240 ms is about a quarter of a second from the change to your click. Several tries show an average.
FAQ
- What is a typical result?
- Many people land between 200 and 300 ms. Faster is not a medical measure, and one try is noisy.
- Is this input lag?
- No. It is the time from a painted colour change to your click, using performance.now(). Monitor processing and USB delay sit outside that.
- What does “too soon” mean?
- You clicked before the signal. The wait is a cryptographic random between about 0.8 and 3 seconds.