Reaction Time Test

How it is measured

• Time runs from the moment the screen turns green until you click.
• If you click before it changes, that try is not recorded.
• A click under 80 ms after the change, or a wait over 2 seconds, is not recorded.
• After 5 tries the average is taken. Lower is faster.

Reaction time differs by device and browser. Compare on the same device.

This is not a medical test and does not diagnose cognitive function.