Watch the flash, then tap Left or Right for the longer bar. About 16 trials.
How it works
Watch the flash, then tap Left or Right for the longer bar. About 16 trials. Inspection time shows modest research links with some cognitive scores. This browser version is not a clinical measure.
⚡ Reaction Time Test🟢 Go/No-Go Practice — Press vs Withhold🎯 Aim Trainer🔍 Visual Search — Find the T Among L’s
🧠 Free test
📅 Last updated: 2026-08-26 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology