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Stroop Test — Train Focus and Cognitive Control

Name the ink color, ignore the word.

  • Reflex
  • 2 min
  • Medium

The Stroop task measures how well you suppress an automatic response. A color word appears in a conflicting ink color; your job is to answer with the ink, not what the word says.

Play Stroop Test

How it works

RED

1A color word appears in conflicting ink.

2Answer with the ink color.

12 correct

3Stay accurate while the timer gets tighter.

Read the ink color, not the word. Conflicting signals make your attention system work harder.

How to play

  1. 1

    Look at the ink

    A color word appears in red, blue, green or yellow ink.

  2. 2

    Ignore the word

    Choose the ink color even when the written word names a different color.

  3. 3

    Build a streak

    Answer before time runs out. The pace rises as your correct streak grows.

What it trains

Cut the delay between seeing and acting. Incongruent color words slow responses because reading competes with naming the ink color.

Brain area
Anterior cingulate cortex + prefrontal cortex
Based on
Stroop, 1935

Leaderboard

Weekly season resets every Monday. Scores show as 5 correct.

Leaderboard

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Questions

What does the Stroop test measure?

It measures selective attention and inhibitory control: the ability to suppress a strong automatic response.

Why are conflicting trials harder?

Reading is highly automatic, so your brain must inhibit the word meaning before naming the ink color.

Is a higher score better?

Yes. Your score is the number of correct responses in a 45-second run.

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