Science-backed answers
FAQ Hub: Every Question, Answered
Browse all eight FAQ collections — reaction time, working memory, typing, aim, brain health, ADHD, and cognitive decline — organised by topic. Each section is a deep-dive, not a one-liner.
Browse by Topic
Each section answers 8–12 questions in depth, with tables, data, and links to relevant tests.
Cognitive Tests FAQ
12 questionsHow accurate are the tests? How are percentiles calculated? What affects your score? Everything about the platform.
Reaction Time FAQ
10 questionsWhat's the average RT? What counts as fast? How does age affect it? Can you improve it? With full benchmark tables.
Working Memory FAQ
10 questionsMiller's Magic Number 7, how to improve digit span, ADHD and WM, N-back training — the definitive WM resource.
Typing Speed FAQ
10 questionsWhat's good WPM? Average by profession? QWERTY vs Dvorak? How WPM is calculated? Full benchmark breakdowns.
Aim Trainer FAQ
10 questionsFitts' Law, DPI settings, flick vs tracking, how long to train, do aim trainers transfer to games — with pro benchmarks.
Brain Health FAQ
10 questionsExercise, sleep, diet, supplements, meditation — what actually works for your brain, ranked by evidence strength.
ADHD & Attention FAQ
10 questionsADHD signs in adults, how the CPT works, WM deficits, caffeine, exercise strategies — evidence-based, not self-help fluff.
Cognitive Decline FAQ
8 questionsWhen does decline start? What's MCI? How the MoCA detects it? Can it be slowed? With age-stratified data tables.
Quick Answers
Short answers to the most common platform questions. For deeper dives, follow the topic links above.
Our tests use high-resolution browser timing APIs (performance.now()) accurate to within ±1ms. However, display latency (typically 5–50ms depending on your monitor) and input latency (20–40ms extra on touchscreens) affect results. Use a desktop with a wired mouse for the most consistent scores.
No. Our tests are modelled on validated research paradigms but are not clinical evaluations. Results are for educational and entertainment purposes only. If you have concerns about cognitive health, please consult a qualified healthcare professional.
Reaction time and memory can vary significantly based on sleep quality, caffeine intake, time of day, distractions, and device conditions. We recommend taking each test multiple times and looking at your average trend rather than any single result.
No. All 30 tests are fully accessible without an account. An account lets you save your score history, track trends over time, and appear on leaderboards.
Yes. We do not sell personal data. Scores are stored against your account and used only to power your dashboard and aggregate (anonymised) global statistics. See our Privacy Policy for full details.
Percentiles are computed against a rolling window of recent scores across all users, trimmed at the extremes to remove outliers. Your percentile shows what percentage of test-takers you scored better than.
Mobile devices add touchscreen latency (20–50ms) and may have slower JavaScript execution. Scores on mobile are typically 30–60ms slower for reaction time tests. We label this clearly on mobile.
Our aggregate, anonymised data can be cited in academic work (please contact us for data requests). Individual score data is not available for third-party research without a formal data-sharing agreement.
Still have a question?
Check the topic-specific FAQ sections above, or read the full methodology on the Science page. Still stuck? Drop us a message.