Stroop Effect Color Word Test
Experience the famous Stroop Effect! Name the ink color of each word as fast as you can. Discover how your brain conflicts when words and colors don't match.
Ready to challenge your brain?
You will see color words displayed in different ink colors. Click the button matching the INK COLOR — not the word itself. Be as fast and accurate as possible!
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What is the Stroop Effect?
The Stroop Effect, discovered by John Ridley Stroop in 1935, is a classic demonstration of cognitive interference. When you see the word "RED" printed in blue ink, your brain automatically reads the word — but the task asks you to name the ink color. This conflict slows your response time.
The Stroop test is widely used in neuropsychology to measure cognitive flexibility, attention, and processing speed. A higher interference score indicates a stronger automatic word-reading response.