● Daily

Stroop Test

◈ E2 · Conditional

Evidence for: trained conflict tasks

How to play

Stroop Test

Pick the ink colour of the word — do not read the word. Example: the word RED printed in blue ink → choose BLUE.

This is a practice exercise, not a medical test. Response times in a browser are only comparable with yourself on the same device.

What does this train?

Part of the method Stroop Training. On the web you answer for real, so we can measure accuracy and response time. A YouTube video can only ask you to score yourself.

What the research says

Last reviewed 2026-10
◈ E2 · Conditional

Practising the Stroop task improves performance on it and on similar conflict tasks. Trained & similar tasks [1][2]

✕ Not supported

It has not been shown to raise general intelligence or everyday self-control. Other abilities [3]

References

  1. Stroop, J. R. (1935). Studies of interference in serial verbal reactions. Journal of Experimental Psychology, 18(6), 643–662. https://doi.org/10.1037/h0054651
  2. Simons, D. J., Boot, W. R., Charness, N., Gathercole, S. E., Chabris, C. F., Hambrick, D. Z., & Stine-Morrow, E. A. L. (2016). Do "brain-training" programs work? Psychological Science in the Public Interest, 17(3), 103–186. https://doi.org/10.1177/1529100616661983
  3. Sala, G., & Gobet, F. (2019). Cognitive training does not enhance general cognition. Trends in Cognitive Sciences, 23(1), 9–20. https://doi.org/10.1016/j.tics.2018.10.004

Reading your results

Compared with yourself: personal best and your recent sessions. We never rank you against “the population” or convert scores into IQ.