Go / No-Go Task
Assess response inhibition by pressing for Go stimuli and withholding responses for No-Go stimuli.
Estimated duration: 2–4 minutes
About This Experiment
The Go/No-Go task is a foundational paradigm in cognitive neuroscience for measuring response inhibition — the ability to suppress a prepotent motor response. On each trial, a colored circle appears: green circles are Go stimuli requiring a key press, while red circles are No-Go stimuli requiring you to withhold your response. Because Go trials are more frequent, you build up a strong tendency to respond, making it harder to inhibit on the occasional No-Go trial. Commission errors (pressing on No-Go trials) reflect failures of inhibitory control, a core component of executive function that is impaired in conditions such as ADHD, substance use disorders, and traumatic brain injury.
How It Works
- A colored circle appears on each trial after a fixation cross.
- Press the spacebar when you see a green circle (Go trial).
- Do not press when you see a red circle (No-Go trial).
- Most trials are Go trials — resist the urge to press on No-Go trials.
Key Metrics
Commission Errors
Number of times you pressed on No-Go trials (failures of inhibition)
Go Accuracy
Percentage of Go trials with a correct response
No-Go Accuracy
Percentage of No-Go trials where you successfully withheld
Mean Go RT
Average response time on correct Go trials
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