Researchers at the Federal Aviation Administration and the University of Michigan report that doing two or more things at once may decrease efficiency and actually take extra time switching from one task to another.

• 美国联邦航天署和密歇根大学研究人员发表的报告显示，一个人同时做两件或更多的事情会降低工作效率，而从一件事情转换到另外一件事情的过程中也会花掉很多的时间。