Go / No-Go: Inhibition
Tap on green, hold on red
About this trainer
A stream of stimuli flashes one at a time, and most of them are "go" signals: you tap as fast as you can. A minority are "no-go" signals, and on those you must do nothing at all. The whole challenge is that tapping becomes a habit within seconds, so holding your finger still on a no-go takes real effort.
What it develops
It trains response inhibition, the ability to cancel an action you have already started to launch, along with the sustained attention needed to keep watching for the rare signal that says "stop". In everyday terms, it is the brake pedal of self-control rather than the accelerator.
History
The go/no-go arrangement goes back to Franciscus Donders in 1868, who used it as one of three tasks in his subtraction method for timing mental processes. Over the twentieth century it was adopted by experimental and clinical psychology as a standard way to probe impulsivity and frontal-lobe function, and it later spread into neuroimaging, ADHD and addiction research, and consumer brain-training apps.
Who created it — and when
There is no single inventor. The paradigm is usually traced to the Dutch physiologist Franciscus Cornelis Donders and his 1868 work on reaction times (his "C-task"), and it was refined by many researchers since. It belongs to the experimental-psychology tradition of mental chronometry, not to any one author or year.
How to train
Keep the no-go signals genuinely rare, around 1 in 4 or fewer, because that is what builds the automatic urge you are learning to override. Aim for a comfortable but quick pace, and treat false alarms (tapping on a no-go) as the score that matters, not raw speed. If you never make mistakes you are going too slow, so push the rhythm until errors creep in, then hold there.
How long to practise
Short and frequent beats long and rare. Five to ten minutes a session, a few times a week, is plenty; the task is mentally fatiguing and accuracy falls off once attention drifts, so stop while you are still sharp rather than grinding out a long block.
Evidence base
What is solid is narrow: with practice you make fewer false alarms and your inhibition on this kind of task gets faster and cleaner. Broad claims are much weaker. A well-known training study by Enge and colleagues (2014) found no convincing evidence that inhibition training transfers to untrained abilities, and reviews of executive-function training generally show little far transfer and no reliable IQ gains. Food-specific go/no-go training does reliably make "no-go" foods less appealing in the lab, but whether that durably changes real eating or drinking is still debated, so treat any promise beyond "you get better at the task" with caution.
Recommendations
Chase your false-alarm rate, not your reaction time: a session where you stayed accurate at a brisk pace beats a fast one littered with slips.
FAQ
Is this the same as the stop-signal task?
No. In go/no-go you decide from the signal itself whether to act, so you can hold back before moving. The stop-signal task tells you to act and then, a beat later, sometimes orders you to abort, which measures cancelling a response already in motion. They are related but tap slightly different braking processes.
Will practising this make me less impulsive in real life?
Honestly, the evidence is thin. You will reliably get better at the task and at withholding responses inside it, but transfer to everyday impulse control or to general self-discipline is weak and contested. Use it as targeted attention-and-inhibition practice, not as a cure for impulsivity.
I keep tapping on the no-go signals. Am I doing it wrong?
Not at all. Those slips, called commission errors, are the whole point of the exercise and the main thing it measures. The skill is to slow down just enough to catch them. If you make zero errors you are probably being too cautious to get any training value.
Variants
Versions differ by how rare the no-go is and by what the signals are. The SART (Robertson, 1997) flips the ratio so that go is constant and no-go is rare, stressing sustained attention. Other variants use specific categories as no-go, such as junk foods, alcohol cues, or particular emotional faces, and the task is often combined with flanker or visual-search elements to load attention further.