Stop the Clock: a time perception test
A stopwatch hand sweeps the dial and vanishes. Stop it exactly when it is back at the top.
Try a practice roundPlay today’s fiveHow it works
A stopwatch hand sweeps around the dial, taking 3 seconds for one lap, and fades away after the first second. Keep counting and tap when you think it’s back at the top. Two tries; your score is how far off you were.
What it measures
This measures interval timing, your internal sense of how much time has passed. Errors tend to grow in proportion to the interval, which is why a few seconds is already hard to judge exactly.
Seeing the hand for the first second gives you its speed; after that it is all your internal clock.
What’s a good score?
Your score is how far off the exact moment you were, so lower is better. In Reactdle, within 80 ms rates Sharp, within 200 ms is Steady, and anything further off is Sluggish.
Tips
- Watch the first second closely to get the pace.
- Keep a steady internal count instead of guessing at the end.
About Reactdle
Stop the Clock is one of twenty tests in Reactdle, a free daily reaction game. Every day everyone gets the same five tests, one from each kind: reflex, aim, brain, timing and words.