It seems intuitive that doing more than one thing at once saves time, but from the brain’s point of view, the opposite is true.

A growing body of neuroscience research is showing that the brain’s capacity for processing more than one task simultaneously is sharply limited. The brain needs to attend to one task at a time; it can’t just double or triple its processing power in line with how many things we are trying to do at once.

We may think we are multi-tasking, but in reality, our brain is rapidly switching its attention resources back and forth from one task to the next.

The bottom line is that multi-tasking may not be the most efficient use of brainpower.

Focusing on one task at a time is likely to get the job done more quickly and with better results.

直覺上我們認為同時間做多項任務是最有效率,但從大腦的角度來看,分開做反而更有效。有神經科學研究指出,大腦對同時間進行超過一項任務的能力出奇地有限,亦難以突然提升2至3倍的效率來應對不同任務,大腦每次只可處理一項任務。

當我們以為大腦在同時處理不同問題時,實際上它的專注只是迅速地在兩項任務之間來回轉換。

總括而言,同時處理多項任務未必是運用大腦的最佳方法。相反,集中精力逐一處理,反而完成得更快更好。