About Reaction Time Test
A reaction time test measures the delay between a visual signal and your response. After you click to start, the box turns green following a random wait of 1.2 to 4 seconds, and the page times your click in milliseconds. Clicking too soon cancels the try. Results are averaged over five tries, and further tries keep updating the average. The reading includes the delay of your screen and mouse, so it runs slightly high.
Questions about Reaction Time Test
What is a good reaction time?
For a simple visual test like this one, results of roughly 200 to 250 milliseconds are commonly reported for adults. Treat that as an approximate range: age, tiredness, practice, and the delay of your screen and mouse all shift the number.
Why is my result slower than I expected?
The measured time includes delays that are not yours: the screen needs time to show the green box and the mouse and browser need time to report the click. Together these can add tens of milliseconds, more on wireless or touch devices.
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