Time Sense — Estimate the Time Between Two Beeps
Two beeps. How much time passed?
- Reflex
- 2 min
- Medium
The first beep starts a hidden stopwatch. The second stops it. Enter how many seconds passed, then compare your estimate with the actual interval. Headphones recommended; sound is required.
Play Time SenseHow it works
BEEP ··· ? seconds ··· BEEP
Example: actual 2.65s, estimate 2.80s → 943 / 1,000 points.
A duration-estimation exercise, not a diagnostic test. Background: Buhusi & Meck, 2005
How to play
- 1
Check your sound
Use the sound-check button at a comfortable volume before starting.
- 2
Listen, don't watch
Two identical beeps mark the interval. The stopwatch stays hidden; no moving progress indicator gives the time away.
- 3
Make your estimate
Enter seconds, such as 2.65. Each of five rounds widens the range. Your score is mean proportional accuracy, up to 1,000.
What it trains
Cut the delay between seeing and acting. Estimating a duration is different from reacting quickly. This exercise practices interval estimation, not reaction time or a clinical diagnosis.
- Brain area
- Distributed timing and attention networks
- Based on
- Buhusi & Meck, 2005
Leaderboard
Weekly season resets every Monday. Scores show as 5 / 1,000.
Leaderboard
Questions
How is the score calculated?
Each round gives max(0, 1 − absolute error / actual duration) × 1,000 points. Your final score is the rounded mean of five rounds.
Does an external stopwatch help?
It defeats the exercise. Estimate without clocks or counting aids. Browser scores are practice scores, not verified laboratory measurements.
What if sound is interrupted?
Leaving the tab or suspending audio cancels the run. Restart with the tab visible and sound enabled.
