NeuroDash: Free Brain Training Games and Connections
Train reaction time, memory, attention, and processing speed with 15+ interactive tests. Track progress and challenge friends in multiplayer reaction duels.
Popular Connections
NeuroDash includes tests for reaction speed, typing speed, attention control, sequence memory, and pattern recognition. Use these exercises to build mental performance over time.
The Science Behind Brain Training
Our tests draw on peer-reviewed research in cognitive neuroscience. The National Institute of Mental Health documents how targeted cognitive exercises can strengthen neural pathways. Research on working memory and reaction time is widely published via PubMed. For broader guidance on brain health, the Harvard Health Memory Center and the American Psychological Association are authoritative resources.
About the Stroop Test
The Stroop test shows you color words — like RED or BLUE — printed in mismatched ink colors. Your task: identify the ink color, not the word. It sounds trivial, but when the word says GREEN and the ink is red, your brain stalls measurably. That delay is the famous Stroop effect.
First described by psychologist John Ridley Stroop in 1935, this is one of the most replicated findings in all of psychology. Reading is so automatic for literate adults that the word's meaning interferes with naming the ink color, and suppressing that interference takes real cognitive effort.
The test measures selective attention and inhibitory control — the same executive functions you use to ignore distractions and override automatic habits. Versions of the Stroop task are used in clinical neuropsychology to assess attention and cognitive control. Your score reports accuracy, response speed, and your personal interference cost: how much slower you are on mismatched trials than matched ones.
Stroop interference benchmarks
| Level | Interference cost |
|---|---|
| Average adult | 100–200 ms per trial |
| Good score | 50–100 ms |
| Excellent | Under 50 ms with high accuracy |
| Typical accuracy | 95%+ on matched, 85–95% on mismatched trials |
Interference cost is your average response time on mismatched trials minus matched trials. Lower is better.
How to improve your score
- Focus on the color as a visual property — try slightly blurring your gaze so the word is harder to read.
- Respond to the ink before your inner voice finishes reading the word.
- Keep a steady rhythm; rushing on mismatched trials causes most errors.
- Practice regularly — interference cost shrinks noticeably with repeated sessions.
- Stay rested: inhibitory control is among the first abilities to degrade when tired.
Frequently asked questions
What is the Stroop test?
A classic psychology test where color words appear in mismatched ink colors and you must name the ink color, not the word. The slowdown caused by the conflict is called the Stroop effect.
What does the Stroop test measure?
Selective attention, processing speed, and inhibitory control — your brain's ability to suppress the automatic urge to read and respond to the ink color instead.
What is a good Stroop test score?
Most adults show an interference cost of 100–200 ms per trial. Under 100 ms is good, and under 50 ms with high accuracy is excellent.
Why is the Stroop test so hard?
Reading is automatic for literate adults, so the word's meaning activates before you can name the ink color. Overriding that automatic response takes measurable mental effort.
Is the Stroop test used clinically?
Yes. Stroop-style tasks are standard tools in neuropsychological assessment of attention and executive function, and appear widely in research on cognitive control.
Can I get better at the Stroop test?
Yes. Practice reliably reduces interference cost, and good sleep and focus training help. The effect never disappears entirely — even experts stay slower on mismatched trials.