Go/No-Go Test Practice

The go/no-go test measures response inhibition: your ability to stop an action you are about to make. Shapes appear one at a time. When you see the green circle (GO) you press Space or tap the screen as fast as you can; when you see the red circle with an X (NO-GO) you do nothing. Three trials in four are GO signals, so pressing quickly becomes a habit within a few seconds, and the NO-GO trials test whether you can break that habit in the fraction of a second before your finger moves. Sixty trials take about two minutes.

What the go/no-go test measures

Psychologists have used go/no-go tasks for decades to study inhibitory control, one of the core executive functions alongside working memory and cognitive flexibility. Inhibition is what lets you hold back a reply in a meeting, check a figure before you send it, or ignore a notification while you finish a task. The go/no-go test isolates it in its simplest form: a strong tendency to respond, and a signal that says stop. People who are more impulsive tend to press on more NO-GO trials, especially when they try to go fast; people who are cautious tend to be slower on GO trials but rarely press by mistake.

Commission errors and omission errors

There are two ways to get a trial wrong, and they mean different things.

• Commission errors are presses on a NO-GO trial: you acted when you should have held back. The commission rate is the headline measure of the test, because it is the direct measure of failed inhibition.
• Omission errors are GO trials you missed: the signal came and went without a response. A few are normal; many usually mean your attention drifted or you became so cautious that you stopped responding in time.

Speed is the third part of the picture. Anyone can avoid commission errors by waiting half a second before every press, so your median reaction time on GO trials shows what your accuracy cost. A good result combines all three: few false presses, almost no misses, and a quick, steady pace.

How this practice test is scored

Your score out of 100 gives 55 points to inhibition (fewer commission errors), 25 to attention (fewer omission errors) and 20 to speed (a median GO reaction time of 300 ms or faster earns all of it, 600 ms or slower none). Inhibition only counts as far as you also answered the GO trials, and speed only as far as you stopped on NO-GO trials, so neither pressing on everything nor never pressing earns a good score. The percentile comes from this fixed table:

For reference, most adults press on somewhere between 10% and 30% of NO-GO trials in a design like this one, miss fewer than 5% of GO trials and respond in 350-450 ms. A score around 65 is typical; above 80 is strong; under 50 usually means either a rushed, impulsive run or a long spell of missed signals.

Where go/no-go tasks appear in hiring assessments

Game-based assessments rarely call it a go/no-go test, but the mechanic is common. One version asks you to press when a shape appears and stop when it changes colour; another shows a stream of objects and asks you to respond to all of them except one kind; a third, the stop-signal design, shows the GO signal first and the stop signal a moment later. In each case the platform records how often you stopped, how often you missed, and how fast you were, and uses those numbers as indicators of impulse control, attention and how you balance speed against care. Employers typically see a profile rather than a pass mark, so there is no single right style, but frequent false presses and erratic speed rarely read well.

Tips for a better go/no-go result

• Find a pace you can stop from. Go fast, but not so fast that you press on the first flash of colour. Most people lose more points to commission errors than they gain in speed.
• Watch for the stop signal, not the go signal. Expect a red circle on every trial; the green ones will take care of themselves.
• Do not slow down after a mistake. One false press is normal. Stay at the same pace rather than overcorrecting into misses.
• Keep your finger resting on the key so the only decision left is whether to press.
• Use the same device each time. Touchscreens add delay, so compare phone results with phone results.

This practice test is an independent, original version of a standard psychology task. GamePrep is not affiliated with pymetrics, Harver, HireVue, Arctic Shores or any employer, and the real assessment you take may look different; it gives you familiarity with the mechanic, not its answers. To train the related skill of ignoring distractions, try the flanker test and the Stroop test.