We obviously don't ask people to drive around and see how many car accidents they have. That would be a little costly proposition. But we design tasks on the computer where we can measure, to millisecond accuracy, how good they are at switching from one task to another.
我们当然不会让人开着车到处跑 然后看看会出几场车祸。这个方案代价有点高。 但是我们可以通过特殊设计的电脑程序 精确到以毫秒为单位测量 考察人们能多快地在不同任务间切换。