Psychomotor function measured via online activity predicts motor vehicle fatality risk

a Keystroke timing is strongly correlated with the population-normalized number of motor vehicle fatalities across 2723 US counties. b Average keystroke timing over time for five example counties in California. The number in parentheses after each county name refers to the population-normalized number of motor vehicle fatalities. c Number of motor vehicle fatalities (population-normalized) by average keystroke timing across 2723 US countie