Two studies were conducted to explore the effect of parental sex on well-being due to parenthood. Study 1 analyzed the sixth wave of the World Values Survey data. The results indicated that parents were happier than their respective childless peers. However, the effect of motherhood was significantly higher than that of fatherhood. Furthermore, Study 2 analyzed the data from 354 single-child parents in China. The results showed that perceived parent-child facial resemblance moderated the sex difference in well-being. Specifically, in the high parent-child facial resemblance group, both fathers and mothers showed high levels of well-being; however, in the low parent-child facial resemblance group, the well-being level of mothers was higher than fathers. These results supported the renovated pyramid of needs and the hypothesis of paternal uncertainty.
Keywords: parental sex; parenthood; parent–child facial resemblance; paternal uncertainty; well-being.