Department of Physics and Astronomy Home Penn Home | Penn SAS | Penn Directories | Penn Maps
logo

Data Analysis and Measurement Uncertainty

Measure Your Reaction Time

  1. Click the large trigger button on the right to begin.
  2. Wait for the stoplight to turn green.
  3. When the stoplight turns green, click the trigger button quickly!
  4. Click the large button again to continue.
  5. To restart the test, click "Start Over"
Test Number Reaction Time (seconds) Watch Stoplight Trigger
1
2
3
4
5
AVERAGE
  • The stoplight may take up to seven seconds to change. The amount of time is random.
  • You may press any key, instead of clicking the mouse button, if you prefer.
  • You will be tested five times, and your average reaction time will be calculated.
© Department of Physics & Astronomy | 209 South 33rd Street | University of Pennsylvania | Philadelphia, PA 19104-6396