Play. React. Know Your Limit.
Three quick tests measure your reaction time, visual attention, and cognitive control — and tell you exactly how impaired you are tonight.
Tap the circle the instant it turns green. Alcohol slows motor response measurably even at low BAC.
~250–310 ms soberSpot Tom in a growing crowd against the clock. Tests selective visual attention — first casualty of alcohol.
~1–2 s soberTap the ink color, not the word. The Stroop task directly measures inhibitory control — very alcohol-sensitive.
Stroop, 1935Recall and repeat an increasing sequence. Short-term recall is one of the first functions to dip.
Miller's Law, 1956Entertainment only · Not a medical device · Never drink and drive · For alcohol support in France: SFA