Stroop Test Online: Free Color-Word Focus Test
The Stroop test is a gold-standard measure of selective attention and mental control: you name the color the word is printed in, while ignoring what the word says. Take the Stroop test online for free and get an instant score for accuracy and speed. No sign-up required.
A quiet Standard round of Stroop Test. When you start, everything else fades — just you and the task.
No sign-up needed. Press Esc to exit anytime.
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How to play
- A colored word appears — for example, the word BLUE printed in red ink.
- Tap the button matching the INK color, not the word itself.
- Go as fast as you can while keeping your answers accurate.
- Finish all trials to see your accuracy, speed, and score.
Frequently asked questions
What does the Stroop test measure?+
It measures selective attention and cognitive control — your ability to focus on one feature (the ink color) while suppressing an automatic response (reading the word).
Why is the Stroop test hard?+
Reading is automatic, so when the word and the ink color disagree, your brain has to actively inhibit the reading response. That conflict is exactly what the test trains.
Do I need to sign up to take the Stroop test?+
No — play and see your score for free. An account only adds saving your history and the leaderboard.
Is the Stroop test the same as an IQ test?+
No. The Stroop test measures one specific thing — selective attention and interference control — not general intelligence. It's a focus-training exercise, not a clinical or diagnostic assessment.