Interval reproduction, rhythm synchronisation and duration estimation — free
Internal timing is a separate ability from reaction speed, and most people discover here that they are not randomly inaccurate but systematically biased — consistently short or consistently long. Knowing your direction is the single most useful thing these games will tell you, and correcting for it improves your score immediately.
Interval Challenge demonstrates a duration and asks you to reproduce it, with your error reported in milliseconds and with its direction. That direction is the informative part.
Time Estimator asks you to judge durations as well as produce them, which is the harder of the two and the one more affected by how engaged you are.
Rhythm Tap scores how precisely you hit an external beat — sensorimotor synchronisation rather than internal timing, and a different ability again.
Most people tap slightly ahead of an auditory beat rather than on it, typically by a few tens of milliseconds. It is called negative mean asynchrony and it is one of the most consistent results in timing research. You will almost certainly see it in Rhythm Tap.
Attention to time is what makes time feel long. When you are engaged, less attention goes to timing and the interval is remembered as shorter — which is why produced intervals tend to come out short when you are concentrating.
Do not count. Counting measures your counting rate, which drifts with arousal, and it turns a timing test into a rhythm test.
Find your bias in the first three rounds, then correct for it deliberately. If you are consistently 200 milliseconds short, aim 200 long.
Stay still. A tapping foot gives you an external rhythm and defeats the point.
Judge yourself on percentage error rather than absolute. A 300 millisecond error on ten seconds is excellent; on one second it is not.
Negative mean asynchrony — most people tap a few tens of milliseconds ahead of an auditory beat. It is one of the most consistent findings in timing research and it is not a mistake on your part.
Not against any rule, but it measures your counting rate rather than your timing, which makes the result far less interesting.
Considerably, on the synchronisation tasks. The gap narrows with practice for everyone.
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