Stroop Test
test your processing speed and cognitive interference by matching text ink color rather than the word itself.
brain & cognitive tests
select a test to begin. test your mental abilities.
test completed!
your final score is calculated below.
remember the number displayed. type it in when it disappears.
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memorize the highlighted tiles. click them once they hide.
watch the pattern flash and repeat the exact sequence in order.
click 'seen' if the word has been shown in this run, otherwise click 'new'.
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solve as many simple arithmetic operations as possible within 60 seconds.
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solve equations that increase in difficulty. no time limits, 3 lives.
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click the square with the slightly different color shade. 30 seconds timer.
does the font ink color match the color word? 30 seconds.
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identify the numbers hidden in the bubble dots. 5 plates total.
identify if the presented word is a real English dictionary term or fake. 20 words.
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type the flashed words as fast as possible. 30 seconds timer.
select the ink color of the word, NOT the color name itself. 30 seconds.
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press MATCH if the letter matches the one shown 2 letters back. Otherwise click NO MATCH.
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click numbers 1 to 25 in ascending order as fast as possible.
complete a 10-question logical progression evaluation to measure your IQ score.
2-minute rapid version. solve as many logical progression puzzles as possible under pressure.
cognitive age estimator. tests memory retrieval and rapid mathematical calculations.
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test deductive reasoning with word puzzles, order relationships, and syllogisms. 5 questions.
combined recall capacity test. evaluates numeric memory, spatial recall, and audio sequence memory.
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Stroop Test — Evaluate Your Cognitive Interference Control
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What Is the Stroop Test?
The Stroop test (Stroop effect task) is a classic neuropsychological test that measures cognitive flexibility, selective attention, and processing speed. You are shown names of colors (e.g., 'RED', 'BLUE') printed in different ink colors. Your task is to identify the color of the ink rather than reading the word itself. The conflict between the semantic meaning of the word and its color is the Stroop Effect.
Stroop Interference Benchmarks
| Test Type | Reaction Time (RT) | Cognitive Status |
|---|---|---|
| Congruent (match) | Under 550 ms | Base Processing Speed |
| Incongruent (conflict) | 650 - 800 ms | Average Interference Control |
| Incongruent (conflict) | Under 600 ms | Superior Cognitive Flexibility |
| Incongruent (conflict) | 900+ ms | Attention Fatigue / Slow Processing |
Understanding Cognitive Interference
Reading is an automated process for adults, whereas identifying colors requires conscious effort. When the word 'GREEN' is printed in RED ink, your brain automatically reads the word first. The brain must actively suppress this automatic response to name the red ink color. This process takes place in the anterior cingulate cortex, the center for conflict monitoring.
Frequently Asked Questions
What does the Stroop test evaluate?
It evaluates selective attention, cognitive inhibition, processing speed, and executive function.
Why is the Stroop effect important?
It demonstrates that automatic cognitive behaviors (like reading) interfere with controlled tasks, showing how the brain manages competing stimuli.