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Simple Reaction Time

Measure your reaction speed across 7 quick trials. Click or press Space when the screen turns teal.

Trial 0 of 7

Your Results Simple

Trials0/7
Mean RT–
Variability (SD)–
Z vs. norms–
Percentile–
2 16 50 84 98
Your percentile: –
⚠️ This tool is for educational use and not a medical diagnosis. Results vary with sleep, caffeine, and device lag.