Reaction Time Test
This simple reaction time test measures how quickly you respond to a visual signal.
Your reaction time can vary depending on your device, screen, focus, and even the time of day. This game is designed for fun and self-challenge, not as a professional cognitive assessment.
Try a few rounds to get your average score. Can you beat your personal best?
How to Play
- Tap or click the Start button to begin each round.
- Wait patiently for the screen to turn green.
- Click as quickly as you can when you see green.
- If you click too early (before green), that round is cancelled.
- Try several rounds to see your average reaction time.
This game is for entertainment purposes only and does not measure professional cognitive performance. Results may vary by device and screen.
FAQ
What is considered a good reaction time?
The average human reaction time to a visual stimulus is around 200-250 milliseconds. Anything under 200ms is considered excellent, while under 150ms is exceptional.
Why does my reaction time vary between attempts?
Reaction time is affected by many factors including fatigue, focus, time of day, and even caffeine intake. Playing multiple rounds gives you a more accurate average.
Does my device affect my reaction time score?
Yes, your device's screen refresh rate, input latency, and display technology can all add milliseconds to your measured time. A high-refresh-rate monitor and a responsive mouse will give more accurate results.