Measure your reaction time under cognitive load
Your score combines correct responses and the reaction time needed to make them. Faster and more accurate answers lead to a higher score
Compared with Reaction Test Level 1, Level 2 adds response selection and inhibitory control. In practical terms, it acts like a lightweight go/no-go task: you must respond quickly to some cues and withhold responses to others.
Repeated practice can support cleaner stopping, better cue-to-response mapping, and steadier decision-making under time pressure. If you want a broader control routine, pair it with Flanker and Stop-Signal.
Sleep, stress, focus, caffeine timing, display refresh rate, browser timing, and input latency can all shift reaction time. For consistent tracking, compare results on the same device and browser. You can read more in sleep, stress and cognitive performance.
Go/no-go style tasks are widely used because they combine speed, response selection, and inhibitory control in one short format. For broader context, read how reaction time works, reaction time comparison, and the open-access article on simple versus choice reaction-time processing.
Orange is a deliberate stop cue. If you press, it is not just slow reaction - it is a control slip. Slow down slightly, relax your hands, and treat orange as a hard stop.
Device latency matters (screen refresh plus input delay). For fair tracking, stick to one setup for a week or two and compare your averages - not single clicks.
Accuracy first. Once you stop making avoidable errors, especially on orange, your speed becomes much easier to interpret and improve.
Start with Reaction Test Level 1, then build control with Flanker, Stop-Signal, or Stroop. For more context, browse the blog.
For training and self-tracking only; not a clinical or diagnostic instrument.