Stroop Effect Test
Take a free online color-word test to measure selective attention, inhibition control, and Stroop interference.
Stroop Effect Test
Identify the ink COLOR of the word, not what the word says. Click the matching color button or use number keys 1-6.
🎯 How to Play
In this free online Stroop test, you'll complete a classic color-word task by identifying the ink color instead of reading the word.
- Look at the colored word displayed on screen
- Identify the COLOR of the text, not the meaning of the word
- Click the correct color button or press the number key (1-6)
- Complete 20 trials to see your Stroop effect measurement
Leaderboard
The leaderboard ranks your adjusted average time: your average correct reaction time plus a 0.250 s penalty for each incorrect answer.
Cognitive Benefits
Cognitive Flexibility
Enhance your ability to switch between different mental concepts and adapt to changing rules or demands.
Selective Attention
Improve your ability to focus on relevant information while filtering out conflicting or distracting elements.
Conflict Resolution
Train your brain to resolve conflicts between competing information sources and make accurate decisions under interference.
The Science Behind the Game
Why the Stroop Effect Test Works as a Color Word Test
A Stroop effect test is a classic color word test: you must report the ink color while ignoring the word itself. That conflict makes an online Stroop test useful for practicing selective attention, inhibition control, and cognitive flexibility. As you repeat the task, you can compare average reaction time, total test time, and the gap between congruent and incongruent trials.