环球慢速英语 第485期:不丹——幸福的国度(7)

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voice 2: Experts at the Worldwatch Institute say that since 1957 the average American has doubled his wealth. But American people are not happier. Studies show that only a third of Americans described themselves as 'very happy'. This is the same number as in 1957.
声音2：世界观察研究所的专家表示，自1957年以来，普通美国人的财富已经翻了一番。但美国人的幸福指数没有增加。研究表明，只有三分之一的美国人称自己“很幸福”。这一比例与1957年一样。

voice 1: Daniel Kahneman is an expert working at the University of Pri