translation.en: We did it first on these rich, developed countries, and then as a separate test bed, we repeated it all on the 50 American states -- asking just the same question: do the more unequal states do worse on all these kinds of measures?
translation.zh: 第一次针对的是这些富裕发达国家， 我们之后更换了测试对象， 对美国 50 个州重复了这个测试—— 调查同样的问题： 是否那些越是不平等的州 在所有这些评估上就做得越差？