Time Lab
🚦

Impulse Control

Tap the green circle — never the orange stop

18 trials · 560ms window
Tap to start
Space works too · taps between signals count as false taps
green → tap fast orange → don't tap
Avg tap—
Accuracy—
False0
Missed0
Recent
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Features

🟢The classic Go/No-Go task: tap the green circle as fast as you can, but freeze on the orange stop. It measures both your reaction speed and your ability to inhibit a response.
🎨A Stroop colour-word task: a colour name is drawn in a colour of ink. Tap only when the word matches its ink — your reflex to read the word gets in the way.
⏱Every correct tap is timed to the millisecond, and your accuracy across the whole session is scored. False taps and missed go-signals are tracked separately.
🧠Both are real tests used in psychology to study response inhibition and cognitive interference — now as a quick, replayable game with three difficulty levels.

Frequently Asked Questions

What is a Go/No-Go test?

Go/No-Go is a classic measure of response inhibition. Most signals are 'go' (tap as fast as you can), but some are 'no-go' (hold still). It tests whether you can stop an action you've already started to make — a core part of self-control and attention.

What is the Stroop effect?

The Stroop effect is the delay you feel when a colour word is printed in a different ink — like the word RED shown in blue. Your brain reads the word automatically, and that reflex conflicts with naming the ink, so matching them takes deliberate effort. It is one of the most studied phenomena in psychology.

Why does impulse control matter?

Response inhibition underlies everyday self-control: not blurting things out, not tapping too soon, staying focused despite distractions. These tasks give a quick, playful snapshot of how well you can hold back a reflex — and how fast you are when you should act.

Can I improve my scores?

Partly. Reaction speed and inhibition are fairly stable, but focus, sleep, and practice all help. Slowing down slightly on the Stroop task trades a little speed for far fewer errors. Try each mode on all three difficulties to see where your speed and restraint balance out.