reaction

If you've ever wondered whether your brain can quickly process visual information, this simple quiz is for you. The rule is simple: when the screen goes black, swiftly tap/click the left mouse button on the screen!

The average reaction time to a visual stimulus is approximately 250ms (milliseconds), and most people may improve to 200ms with practice. The fastest known reaction time to a visual stimuli is 120 milliseconds, which is a difficult record to beat. If you believe you have what it takes, please upload a video of yourself performing this test on YouTube and email us the link. This test can be retaken as many times as you like without affecting your final score.

How to play reaction

Using mouse

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