Reflex Tap

What is Reflex Tap?

A bar sweeps back and forth across a track and you tap once to stop it. The closer to the centre you land, the higher your score. That is the whole game. It takes under a second to play and it is considerably harder than it sounds, because the bar speeds up as you go and human timing does not.

What it measures is not the same thing as a reaction test. In a reaction test you respond to something unexpected, so you are measuring raw latency. Here the movement is entirely predictable, so you are measuring anticipation: your ability to fire slightly before the moment you want to hit, by exactly the length of your own delay. That is a different and more trainable skill.

How to play

1. Tap anywhere to stop the moving bar.
2. The nearer the centre, the more points.
3. Each successful round makes the bar faster.
4. Miss badly and the run ends. Your best is saved.

How to score higher

• Fire early. Your tap lands roughly 200 milliseconds after you decide to make it. Aiming at the centre guarantees you overshoot. Aim just before it.
• Find the rhythm, then close your focus. Watching the bar the whole way across encourages you to react. Letting it pass twice and tapping on the beat works better.
• Keep your finger resting on the screen. Travel distance is dead time, and at high speeds a centimetre of hover is the difference between the centre and the edge.
• Do not slow down when it speeds up. The instinct at high speed is to concentrate harder, which adds deliberation and therefore delay. Commit faster, not more carefully.
• Take a run of five. Almost everyone's first attempt is their worst, because the timing has to be calibrated before it can be used.

Why anticipation beats reaction

Reaction speed is largely fixed. Signal conduction, visual processing and motor response add up to something close to a personal constant, and practice barely moves it. Anticipation is different, because it is a learned model of your own delay. That is why a drummer can hit a beat precisely, and why players improve rapidly on this kind of game and then plateau, once the internal model is calibrated and only the raw constant is left.

If you want to measure the other half of the equation, the Reaction Time Test isolates pure response with no prediction involved, and comparing the two is more revealing than either on its own. Your best score here is saved in your browser and no account is needed.