Go / No-Go Test
Click when the pad is green, but do nothing when it's red. Measure both your reaction speed and your impulse control across a run of trials.
Green = go. Red = hold. 20 trials.
What is a good go/no-go result?
Two numbers matter here and they pull against each other: how fast you respond on go trials, and how often you wrongly respond on no-go trials. A fast time with poor restraint is a bad result.
| Rating | Go reaction time | What it means |
|---|---|---|
| Elite | Under 280 ms | Fast responses while still holding back on no-go trials. |
| Fast | 280–330 ms | Quick without tipping into impulsive. |
| AverageMost people | 330–400 ms | Typical when you are genuinely waiting to check the signal. |
| Below average | 400–480 ms | Caution is costing more time than the task requires. |
| Slow | Over 480 ms | Verifying every signal before committing to it. |
Reading the numbers: Read the bands together with your commission errors — the times you clicked on red. Most people wrongly respond on 15–25% of no-go trials, because the majority of trials are go trials and that momentum has to be actively stopped. Pushing your reaction time down while your commission errors climb is not an improvement; it is the trade-off the task is designed to expose.
Scored on restraint as much as speed.
Reaction time and held responses are tracked together, because either number on its own is misleading.
Go and no-go cues
Green means click, red means hold.
Reaction + accuracy
Tracks your go time and your error rate.
Error-aware
Both clicking red and missing green count against you.
20-trial run
A fixed round gives a comparable result.
Best average saved
Your fastest clean average is stored locally.
Private by default
Reaction times and commission errors stay on your device.
Go trials, no-go trials.
Green means act. Red means do nothing, which is the hard part.
Start the run
Click to begin the 20 trials.
Watch each cue
The pad turns green or red.
Act or hold
Click on green, do nothing on red.
Finish 20
See your average go time and accuracy.
Why response inhibition is measured.
Knowing when not to act is a separate skill from acting fast.
Impulse control
Measure how well you withhold an eager response.
Inhibition research
A standard demo of response inhibition.
Self-control training
Practise stopping under time pressure.
Tired vs rested
See how fatigue changes your error rate.
Psychology demos
A ready-made classroom exercise.
Reflex with restraint
Train speed that doesn't turn into mistakes.
How the go/no-go test works
On each trial the pad turns green or red. Click as fast as you can on green (a "go"), but do nothing on red (a "no-go"). Because most trials are go, you build momentum to respond — and stopping that response on red takes real control.
This is a classic measure of response inhibition. You're scored on your average reaction time to greens plus your accuracy: clicking a red (a commission error) or missing a green (an omission error) both count against you. Fast but impulsive scores poorly. Your best average go-time is saved locally.
Go / No-Go questions, answered.
What does the go/no-go test measure?
It measures response inhibition — your ability to react quickly to 'go' signals while withholding a response to 'no-go' signals. It's a standard measure of impulse control alongside reaction speed.
How is it scored?
You get your average reaction time on correct 'go' trials, plus your accuracy: how often you correctly acted on green and correctly held back on red. Fast but impulsive scores poorly.
Why do I keep clicking on red?
Because most trials are 'go', you build momentum to respond, and stopping that response takes deliberate control. Clicking on 'no-go' is called a commission error and is the point of the test.
How is it different from a reaction test?
A plain reaction test only rewards speed. The go/no-go test also punishes acting when you shouldn't, so it measures self-control, not just how fast you can click.
Tests closest to the Go / No-Go test.
Tests that punish acting on autopilot: you have to override an automatic response to score well.