Stroop Color-Word Test
A clinician-assigned cued color-and-word switching task with guided examples, practice, and 144 scored trials in approximately 10–15 minutes. The non-diagnostic report describes reaction time and accuracy patterns from this session.
How the task works
Learn the response pairs
Eight guided examples require the correct response before moving on: D matches red or bad, F matches green or deep, J matches blue or poor, and K matches yellow or legal.
Follow the cue
Each trial shows COLOR or WORD for 1.4 seconds. COLOR means respond to the ink; WORD means respond to the word’s learned pair. A 16-trial practice is never scored or saved.
Complete the scored trials
The stimulus remains until you respond. This app then inserts a 400 ms blank pacing interval before the next cue; that interval is an interface adaptation rather than a timing claim from the paper. The 144 scored trials include rest screens after trials 36, 72, and 108.
Common questions
How long does it take?
Approximately 10–15 minutes. You complete 8 guided examples, 16 unscored practice trials, and 144 scored trials, with three brief rest screens.
Is it free?
The task is assigned through a clinician’s patient link; respondents do not purchase it separately. The report provides descriptive summaries of reaction time and accuracy across cue, stimulus, and switch conditions. These are session-specific research measures, not population norms or clinical scores.
How accurate is an online Stroop test?
Research on browser-based experiments describes how frame-synchronized stimulus presentation and hardware-stamped input events can support useful response-time measurement (for example, Bridges et al., 2020; Anwyl-Irvine et al., 2021). Device, browser, sleep, caffeine, and distraction can still affect a session, so results should be read descriptively.
Can I retake it?
Yes. Familiarity with the rules and response keys can change performance on a later attempt, so compare sessions cautiously and consider differences in device and testing conditions.
What's the difference between this and a clinical Stroop?
Clinical instruments are interpreted by qualified professionals as part of a broader evaluation. This clinician-assigned cued switching task provides descriptive research measures only. It is non-diagnostic and is not a substitute for clinical assessment.