原文：
World Happiness Report
Happiness scored according to economic production, social support, etc.
The World Happiness Report is a landmark survey of the state of global happiness. The first report was published in 2012, the second in 2013, the third in 2015, and the fourth in the 2016 Update. The World Happiness 2017, which ranks 155 countries by their happiness levels, was released at the United Nations at an event celebrating International Day of Happiness on March 20th. The report continues to gain global recognition as governments, organizations and civil society increasingly use happiness indicators to inform their policy-making decisions. Leading experts across fields – economics, psychology, survey analysis, national statistics, health, public policy and more – describe how measurements of well-being can be used effectively to assess the progress of nations. The reports review the state of happiness in the world today and show how the new science of happiness explains personal and national variations in happiness.
The happiness scores and rankings use data from the Gallup World Poll. The scores are based on answers to the main life evaluation question asked in the poll. This question, known as the Cantril ladder, asks respondents to think of a ladder with the best possible life for them being a 10 and the worst possible life being a 0 and to rate their own current lives on that scale. The scores are from nationally representative samples for the years 2013-2016 and use the Gallup weights to make the estimates representative. The columns following the happiness score estimate the extent to which each of six factors – economic production, social support, life expectancy, freedom, absence of corruption, and generosity – contribute to making life evaluations higher in each country than they are in Dystopia, a hypothetical country that has values equal to the world’s lowest national averages for each of the six factors. They have no impact on the total score reported for each country, but they do explain why some countries rank higher than others.
译：
世界幸福报告
幸福感是根据经济生产、社会支持等因素来得分的。
《世界幸福报告》是对全球幸福状况的里程碑式调查。第一份报告于2012年发布，2013年第二份，2015年第三份，2016年更新第四份。《2017世界幸福》以其幸福水平排名155个国家，3月20日在联合国举行的庆祝国际幸福日活动上发布。报告继续得到全球的承认，因为各国政府、组织和民间社会越来越多地利用幸福指数来通知其决策决定。跨领域的主要专家——经济学、心理学、调查分析、国家统计、卫生、公共政策等——描述如何有效地利用幸福感衡量来评估国家的进展。这些报告回顾了当今世界上的幸福状况，并展示了新的幸福科学如何解释个人和国家在幸福方面的变化。
幸福感得分和排名使用盖洛普世界民意调查的数据。这些分数是基于对民意测验中所问的主要生命评估问题的答案。这个问题，被称为“坎蒂尔阶梯”，要求受访者考虑一个梯子，其中最美好的生活是10岁，最糟糕的生活是0，并以此为尺度对自己的当前生活进行评分。这些分数来自2013-2016年的全国代表性样本，并使用盖洛普权重来代表评估。幸福指数后面的专栏估计了六个因素中的每一个因素——经济生产、社会支持、预期寿命、自由、没有腐败和慷慨——对每个国家的生活评价都比反乌托邦的评价更高，而反乌托邦的生活评价值与世界的价值观相当六个因素中的每一个国家平均值最低。它们对每个国家的总得分没有影响，但它们确实解释了为什么有些国家的排名高于其他国家。
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