Test for How Quick You Dey React

• Average reaction time: di average time for all your taps wey we measure, for milliseconds (ms). Smaller time mean say you quick pass.
• Quickest tap: di one tap wey you do quick pass. One lucky tap no tell plenty like di average.
• Slow taps: taps wey take pass 500 ms. People wey dey study sleep dey call these attention lapses, and dem dey happen more after person sleep small [1].
• Taps wey you do too early: taps before di circle turn green, or under 100 ms; na too quick for real response. We no count dem for your average.

Di chart show average results from lab by age. Browser dey measure slower pass lab equipment (read below), so use di chart see di pattern, then compare your number with your own earlier tests.

Cite dis page: Test for How Quick You Dey React. Helibrain. 2026. https://helibrain.com/pcm/reaction-time-test. CC BY 4.0.

Cite dis page: Test for How Quick You Dey React. Helibrain. 2026. https://helibrain.com/pcm/reaction-time-test. CC BY 4.0.

1. Tap when e turn green. Tap, click, or press Space or Enter.

Na di same test wey dey inside Helibrain app. Di page start di clock when e tell your browser to show di green circle, then stop am when your tap reach. So your time include your screen delay and delay from your mouse, keyboard or touchscreen, wey one web page no fit measure.

• Your device. For lab checks, web pages add 58 to 133 ms to every response, depending on di device and browser [3]. Even browser add 8 to 67 ms when dem use lab-quality button [7]. For touchscreen, your finger still need reach di glass; one study find say e add about 95 ms [6].
• Sleep. After one night without sleep, or several nights of short sleep, responses dey slow and long lapses dey happen often [1]. Lapse and speed measurements dey catch this well [8].
• Time of day. Attention dey follow daily rhythm. For person wey dey sleep from 11 pm to 7 am, reaction slow pass for night and early morning, and better for afternoon and early evening [9].
• Caffeine. One major review find say about 40 to 300 mg caffeine dey improve alertness, vigilance and reaction time [10].
• Alcohol. For one trial wey compare alcohol with placebo, 16 young men drink alcohol wey raise blood alcohol to about 0.07%; for peak time, simple reaction time slow by about 43 ms [11].
• Age. Difference between di youngest and oldest groups for Figure 1 na about 21 ms. Di study estimate say di extra time dey come from starting di movement, no be from seeing di signal [2].
• Practice. Practice hardly change simple reaction time. For 48 adults wey dem test once every week for three weeks, average change by less than 3 ms [12]. Across 36 studies, people quick small for their second try, then their speed level out [13].
• Action video games. People wey dey play action games often respond about 11% quicker pass people wey no dey play, with di same accuracy, mostly for choice tasks [14]. Most of those studies compare people wey don already dey play, so e fit be say di games no cause am.

Cite dis page: Test for How Quick You Dey React. Helibrain. 2026. https://helibrain.com/pcm/reaction-time-test. CC BY 4.0.

Di test measure how quick you answer one signal wey you expect, right now, with this device. E no measure intelligence, whether you fit drive well or any health condition, and e no be diagnosis.

Device delay na di biggest limit: e pass di whole age difference for Figure 1, and e dey change from one device to another. This one matter pass when you dey compare different people [3]. So compare your number with your own earlier scores with di same device and browser.

One minute na just small look at that moment. Short versions of PVT still fit detect lack of sleep, but di effect no strong like di 10-minute version [15]. If your reaction time dey worry you, for example after sickness or new medicine, talk to doctor.