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How does the reaction time test work?

Click the panel on the reaction time test. It turns red – wait. When it turns green, click as fast as you can. Five attempts are averaged.

Step by step

  1. Open the reaction time test and click the panel.
  2. Wait while it is red. After one to four seconds it turns green.
  3. Click, tap or press Space as quickly as you can.
  4. Repeat five times for your average.

Open the reaction time test

Questions and fixes

It says “Too soon!”

You clicked while it was still red. That attempt doesn’t count; just try again.

My times are slower on another device

Screens, mice and busy computers add a few milliseconds. Compare scores on the same device.

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