一项研究发现，快乐的秘诀就是让自己忙起来。

　　Keeping the mind occupied with tasks - no matter how meaningless - staves offnegative emotions, the study found.

　　该研究发现，让自己有点事情可想——无论是多么没意思的事——都有助于抵制消极情绪。

　　However, the bad news is that humans seem hard-wiredto be lazy in order to save energy, according to Professor Christopher Hsee, a behavioural scientist at Chicago University.

　　然而，据芝加哥大学行为科学家奚恺元教授介绍，人类似乎生性懒惰，旨在保存精力。

　　In a study 98 students were asked to complete two surveys. After they had completed the first they were made to wait 15 minutes to receive the next one.

　　研究人员让98个学生做了两项调查。这两个调查间隔15分钟。