Stroop Test — Online Color-Word Interference Reaction Time Test
Task
Trials
Time limit
8 practice trials
Space to start · answer with 1 2 3 4 or D F J K · Esc to stop
Results
Stroop interference effect
—ms
Incongruent mean − congruent mean reaction time
| Condition | Trials | Accuracy | Mean ms | Median ms |
|---|
CongruentIncongruentNeutralError / timeout
This is not a medical or psychological diagnosis. Absolute reaction times include keyboard or touch latency and screen refresh delay, so compare interference effects (differences) measured on the same device. No comparison norms (such as percentiles) are provided. Guide to reading your results →
My history
| Date | Task | Trials | Congruent ms | Incongruent ms | Interference ms | Accuracy |
|---|
No results yet. Once you finish a test, it will be saved on this device.