Reaction tester   Click the Start button to start the tester. After a few seconds the two markers at the right will swap places, which is the signal for you to click the Detect button. The text area at the top will then tell you your reaction time, measured from the marker event until you clicked the Detect button. The resolution of the reaction time measurement is 50 milli-seconds. The accuracy depends entirely on your computer and on your internet browser, but is most likely much better than this resolution.

Bugs in the Netscape 6 browser distort most pages of this site. If this annoys you, use Internet Explorer, Netscape Communicator/Navigator or Opera instead. © All material on this site is owned by Berend Meijer. You are not allowed to copy any of the text, images, music, sounds, scripts or other contents unless you get his permission first. You are also not allowed to use any of the text, images, music, sounds, scripts or other contents outside the context of this site.