Press Space or tap the box when you see GO (✓) — but hold back when you see NO-GO (✗). Tests your ability to suppress impulses.
Response inhibition is the ability to suppress automatic or pre-potent responses — essentially, your brain's "stop" signal. Poor inhibition is linked to impulsivity, ADHD, and substance use disorders. Elite athletes and chess players show exceptional inhibitory control.
Pair this with the Stroop Test and Attention Test for a complete executive function assessment.
The Go/No-Go test measures response inhibition — your brain's ability to suppress a prepared motor response. The test exploits a cognitive asymmetry: the more frequent "Go" stimulus builds a prepotent (automatic) tendency to respond. When a rare "No-Go" stimulus appears, you must rapidly cancel this automatic response. The speed and accuracy of that cancellation directly indexes inhibitory control — a core executive function mediated by right inferior frontal cortex and subthalamic nucleus.
Poor response inhibition is one of the defining features of ADHD, substance use disorders, and frontal lobe injuries. Elite athletes and musicians, by contrast, tend to show exceptionally fast and accurate inhibitory performance — their precision sports and instruments demand constant micro-level suppression of extraneous movements. This test is used clinically, in sports science, and in cognitive neuroscience as a reliable index of top-down control.
Overall accuracy above 85% indicates good inhibitory control. The most diagnostically meaningful metric is your false alarm rate — how often you pressed on No-Go trials. A low false alarm rate (under 15%) with fast Go responses indicates both good inhibition and preserved responsiveness. A high false alarm rate suggests impulsivity — responding before conscious evaluation completes.
Pair this test with the Stroop Test (interference inhibition) and Flanker Test (selective attention) to build a complete picture of your executive control system. All three engage overlapping prefrontal networks but through distinct mechanisms.