Perhaps Eric's gratitude made people feel better, or at least less bad? Or perhaps saying thanks boosted the helper's self-esteem, which in turn motivated them to help again.

或许是Eric的感谢信让人有优越感或至少不是没道德的，也或许说“谢谢”能提高帮助者的自尊，从而使他们更有动力再次帮助别人。

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PsyBlog has gone gratitude-mad this week, what with reporting experimental evidence that practicing gratitude can increase happiness by 25% and reviewing 'thanks', the book by the study's author.

本周是PsyBlog的疯狂感恩周，因为研究报告的作者称，实验表明经常心怀感恩和口念“感谢”能够增加25%的幸福。

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We wish to show our gratitude and thanks with a small gift.

我们送您一件小礼物，以表我们对您的感激之情。

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