为什么负面情绪在我们脑海里停留的时间更长？
主题：生活中，我们会经常碰到不好的事情，这会让我们产生负面的情绪。就像，我最近手机被偷了，心里会难过好久。过一段时间，想到手机被偷，心里还是会不开心。而工作评优得奖带来的开心喜悦，一两天就没有了。走不出负面情绪带来的阴影，那我们该怎么办呢？
演讲者：Alison Ledgerwood，社会心理学家，研究人类如何思考及如何更好地思考。
内容节选：
Here's something I noticed a few years ago about how I seem to think; here's a typical week in my life, which usually seems to revolve entirely around publishing papers. So here I am, at maximum of my artistic abilities as a stick figure, going along at baseline.
几年前我注意到自己是如何思考的。这是我生活中典型的一周，一切围绕着发表论文展开的。我在这里，以我最大的美术能力画出来的火柴人，在基准线上前行。
And a paper gets accepted. I get this rush, this blip of happiness, and then I'm back to baseline by about lunch time. A few days later, a paper might get rejected, and that feels pretty awful, and I wait for that blip to end, but somehow I just can't stop thinking about it. Here's the craziest part: even if another paper gets accepted the next day, well, that's nice，but somehow I can't get that pesky rejection out of my head.
当一篇文章通过审稿时，我迅速到达了兴奋的顶峰。接近午餐时，我回到了基准线状态。几天后，一篇文章被拒绝了，我很难受，并等待这阵糟糕的情绪结束。但我就是莫名停不下来地想这件事。更疯狂的是：即使第二天另外一篇文章通过审核，我本可以高兴起来，之前文章收到的烦人的拒绝，也始终在我的脑海中徘徊。
So, what is going on here? Why does a failure seem to stick in our minds so much longer than a success?
发生了什么呢？为什么感觉失败比成功在我们脑海里停留的时间长得多？
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