About 40 letters. Tap the stage or press Space only for X. Hits and false alarms are counted. Misses happen if you wait.
How it works
About 40 letters. Tap the stage or press Space only for X. Hits and false alarms are counted. Misses happen if you wait. Continuous performance tests in clinics have timed protocols and age norms. This 40-trial stream is not that test and not an IQ.
🟢 Go/No-Go Practice — Press vs Withhold↔️ Flanker Lite — Center Arrow⚡ Reaction Time Test👀 Anti-Saccade Lite — Tap the Opposite Side
❓ FAQ
Can this diagnose ADHD?No. ADHD is a clinical judgement. A web X-tap game cannot make or unmake it.
What is a false alarm?Tapping when the letter was not X. Labs track that separately. We show a simple hits/FA pair.
Phone lag?Device delay changes speeded games. Do not compare phones as if they were a lab.
📅 Last updated: 2026-08-27 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology