Audio Reaction Test
React the instant you hear the beep. Most people set their best score here.
Your ears beat your eyes
Sound reaches your brain along a shorter path than light. A tone hits the auditory system and triggers a motor response quicker than a visual signal, which has to travel through the retina and visual cortex first. That gap — usually 30 to 50 ms — is why sprinters start on a gun rather than a light, and why most people set a personal best on this test.
The screen stays dark and shows you nothing: no countdown, no fade, no flicker to anticipate. After a random 1.5 to 5 second wait a short beep plays, and the clock starts at the moment the sound actually leaves your output device — not the moment we asked for it, which can be tens of milliseconds earlier. That distinction is the whole difference between an honest audio score and a flattering one.
Because your score is graded against auditory reaction data rather than visual, a fast time here is not automatically a better grade than the same number on the click test. You are being compared with people who were also listening.