Brainground/Stroop

Stroop

Name the ink colour, not the word. Sixty seconds that reveal your executive control when information and instinct disagree.

Stroop
60s · Brain · Lab: CNS Vital Signs

Tap the colour of the ink

A colour word will appear — but painted in a different colour. Ignore the word. Choose the colour it's printed in, as fast and accurately as you can.

1
Read the inkThe word might say “BLUE” in red ink. The answer is red.
2
Tap or pressUse the colour buttons, or keys R · G · B · Y.
3
Keep paceYou have 60 seconds. Speed and accuracy both count.
R redG greenB blueY yellow
60
Seconds
0
Correct
—
Accuracy
Tap the INK colour
BLUE
0.0Peak Hrs / 6

Nicely done

0Trials
0%Accuracy
0msAvg reaction
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What it measures

Executive control

The Stroop effect is one of psychology's most replicated findings: reading is automatic, so naming the ink colour of a conflicting word forces your prefrontal cortex to override the reflex. How well — and how fast — you do that is a clean window onto executive function, the first thing to fade when peak hours run short.

In the lab

CNS Vital Signs

Inside a Peak Circle programme this quick screen is replaced by a validated computerised battery and qEEG mapping, so your executive-function score is calibrated against clinical norms rather than a single 60-second run.