Reaction Timer
Finding your average reaction time.

Test how quickly you can react to a visual change.
Click on the  start  button to begin the test.
Keep the mouse over the 'start' button until...
the words, click STOP!!! appear, click on the  stop  button.
Do the test five times to get an average reaction time.

To reset the reaction timer, use the New Game button.



Free JavaScripts provided
by The JavaScript Source