How does the rhythm test work?
8 clicks play a steady beat at the tempo you choose (90, 120, 150 beats per minute). Tap along with them on the pad, or with Space or any key. Then the clicks stop, and you keep tapping at the same speed for 12 more taps. The screen never flashes on the beat: you follow it by ear.
Tapping along and then carrying on alone is the "synchronisation–continuation" task used in tapping research. The second part shows how well you hold a tempo in your head once nothing is guiding you.
How is your Rhythm Test result calculated?
Your result is your average miss per beat after the clicks stopped: for each gap between two taps, how far it was from the beat's gap, in milliseconds, averaged. It compares your taps only with each other, so the delay of your speakers or headphones can't change it. Beside it: the tempo you actually kept, how steady your taps were (their spread), and how far ahead of or behind the clicks you tapped while they played.
That last figure does include the delay of your sound. The browser reports the delay it knows about and the test allows for it, but Bluetooth headphones can add more that no browser can see.
Why do people tap ahead of the beat?
People tapping along with a beat tend to land slightly before the click, usually without noticing. Researchers call it the negative mean asynchrony, and it is one of the best-known findings in tapping research: Bruno Repp's 2005 review of the field, in Psychonomic Bulletin & Review, gives it a section of its own. If your "with the clicks" figure says you were ahead, that is why.
How do you keep a steadier beat?
- Count in your head. "One, two, three, four" carries the tempo after the clicks stop.
- Move more than your finger. Try nodding or tapping a foot along with the clicks.
- Don't chase a miss. If one tap is late, put the next one where the beat should be, not a full beat after the late one.
For timing without a beat, try the 1 Second Challenge or the Time Perception Test.