Select the ink color of the word — ignore what the word says.
A word will appear in a color.
Press the button matching the ink color, not the word itself.
60 seconds — go as fast as you can!
First described by psychologist John Ridley Stroop in 1935, the Stroop Effect reveals a fundamental conflict in the brain: reading is so automatic that it interferes with naming the color of ink. When the word "BLUE" is written in red ink, your brain processes both the word's meaning and its color simultaneously — and the mismatch slows you down.
Congruent trials (e.g., RED in red) are faster. Incongruent trials (e.g., RED in blue) produce the Stroop interference effect — slower reaction times and more errors. Your results at the end will compare both conditions.