来自《耶鲁大学开放课程：心理学导论 第20集 第20集》
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And the reasons come from a couple of experiments.原因源于几个实验 -
In one experiment在一个实验中 -
they asked people inside a psychology department研究人员在一个有复印机的 -
where there was a photocopy machine.心理部门向人们提问 -
They went up to people--他们走过去 -
the people were going up to the photocopy machine人们正准备走到复印机旁 -
to make copies and when复印文件 -
they were done making copies they asked them,当他们复印好时问他们 -
"How happy are you with your entire life?""你这辈子有多幸福呢" -
There were two groups.有两组人员参加实验 -
Group A, they put a dime在A组 研究人员在复印机上 -
on top of the photocopy machine放了一枚一角硬币