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大家都说爱笑的人运气不会差到哪里去，有没有发现你身边整天笑容满面的人运气也不错呢？事实上他们不是因为运气好而笑，而是因为爱笑而运气好哦！ People are always smiling, especially in groups, but it doesn't just signal that they're happy. We use smiles for specific social purposes. 人们经常会笑，特别是在一个团队里的时候，其实笑并不代表他就快乐。我们笑是为了迎合某些社交目的。 1. Get others to trust you 1. 让别人相信你 One signal that suggests we are trustworthy is a smile. Genuine smiles send a message that other people can trust and cooperate with us. Economists even consider that smiles have a value. In one study by Scharlemann et al. (2001) participants were more likely to trust another person if they were smiling. This study found that a smile increased people's willingness to trust by about 10%. 微笑能给别人发出一种信号，告诉他们我是值得相信的。经济学家甚至认为微笑是有价值的。在Scharlemann等学者做的一项研究中，研究结果显示如果你对对方微笑的话，对方会更加愿意相信你的话。研究结果还显示，微笑能让对方相信你的话意愿增加10%。 2. Smile for leniency 2. 让别人放你一马 When people do bad things they often smile when they are caught. Is this to their benefit? According to a study conducted by LaFrance and Hecht (1995), it can be. We treat people who've broken the rules with more leniency if they smile afterwards. It doesn't matter whether it's a false smile, a miserable smile or a real felt smile, they all work to make us want to give the transgressor a break. | 
