In recent years, researc in subjective well-being has found several ecological factors that may underpin societal differences in happiness. The adult sex ratio, the number of males relative to females in an environment, influences many behaviours in both humans and non-human animals. However, the possible influence of the sex ratio on subjective well-being has received little attention. I investigated the relationship between the adult sex ratio and subjective well-being in over 29,000 respondents from 133 regions of Europe. I find that women report lower subjective well-being in areas with more female-biased sex ratios, but males’ well-being was unaffected. I did not find that the sex ratio influences the sex specific probability of marriage, or marriage rates overall. I also find that increased population density is associated with lower well-being. Drawing from sociological and evolutionary theories, I suggest that results may be due to females’ decreased bargaining power in the dating market.

近年来，对主观幸福感的重新研究发现了可能支撑幸福感社会差异的几种生态因素。成年性别比，即环境中的雄性相对于雌性的数量，会影响人类和非人类动物的许多行为。但是，性别比例对主观幸福感的可能影响却鲜为人知。我调查了来自欧洲133个地区的29,000多名受访者中成人性别比例与主观幸福感之间的关系。我发现，在性别偏见较高的地区，女性主观幸福感较低，而男性的幸福感却未受影响。我没有发现性别比例会影响特定性别的结婚概率或整体结婚率。我还发现，人口密度增加与幸福感降低有关。从社会学和进化论的角度出发，我认为结果可能是由于女性在约会市场上的议价能力下降所致。