Back in 1908, when Mercedes-Benz was a startup and drivers had to navigate around horse-drawn carriages, signaling turns by rolling down an isinglass window and sticking out an arm, psychologists Robert Yerkes and John Dodson first described a paradox that continues to plague would-be automotive automators.

The Yerkes-Dodson law, as it became known, describes the relationship between arousal and performance. Give people too little to pay attention to and they’ll become complacent. Give them too much and they’ll become overwhelmed. For the best performance, the two researchers said, humans must ...

Mercredi 27 juillet

Mobiles et PDA - 27 juillet 2011 :: 09:51 :: Par Jean-Baptiste