Simply saying "thank you" may benefit both the recipient and the person who express gratitude, according to the results of studies conducted by researchers at Florida State University in Tallahassee.
　　美国塔拉哈西佛罗里达州立大学的研究人员开展的一系列研究表明，简单的一声“谢谢”对致谢人和被感谢的人都有好处。

　　The studies, published in the latest issue of Psychological Science, found that saying "thank you" strengthens relationships by causing the person expressing thanks to feel more responsible for the recipient's welfare.
　　这些在最新一期《心理科学》上发表的研究发现，说“谢谢”能让表达感谢的人觉得自己考虑到了对方的感受，进而能够增进人际关系。

　　To understand how expressing gratitude helps strengthen relationships, the researchers conducted three different studies.
　　为了弄清表达感谢究竟是如何促进人际关系的问题，研究人员开展了三项不同的研究。

　　In one study, 137 college students completed a survey regarding how often they expressed gratitude to a friend or partner. Results showed that gratitude was positively linked with the person's perception of the "communal" strength.
　　在一项研究中，研究人员对137名大学生开展了一项关于他们对朋友或情侣表达感谢的频率的调查。结果显示，说“谢谢”能让致谢人更进一步地看待相互间的关系。

　　In another study involving 218 college students, expressing gratitude found the expresser's perception of the relationship's strength over time was boosted.
　　在另一项对218名大学生开展的研究中，表达感谢让致谢人感到双方的关系更“铁”了。

　　In the third study, 75 men and women were randomly assigned to one of four groups. Over a three-week period, one group expressed gratitude to a friend; another thought grateful thoughts about a friend, while a third thought about daily activities and a fourth had positive interactions with a friend.
　　在第三项研究中，研究人员将75名男性和女性随机分为四个小组。在三个星期的时间内，一个小组向朋友表达感谢，另一个小组对朋友心怀感激，第三个小组只考虑日常活动，第四个小组与朋友进行积极互动。