The Happy Few: Cross–Country Evidence on Social Capital and Life Satisfaction
研究了为什么一些国家的人口比其他国家更满意自己的生活，发现人均收入、经济不确定性和未来预期是幸福感的稳健预测因素，而社会资本与幸福感的关联尤为强烈且稳健。
I examine why the populations of certain countries are so much more satisfied with their lives than the rest of the world. In cross-country analyses, income per capita, economic uncertainty and expectations for the future are robust predictors of happiness while a social capital measure emerges strongly and robustly associated with happiness. Moreover, the effect of investing in social capital is remarkably strong compared to the alternatives. I conclude that the populations in a few Northern European countries are probably the happiest in the world because of their high levels of social capital more than their pecuniary affluence.