Husband's income, wife's income, and number of biological children in the U.S.

Previous studies have found that the positive relationship between personal income and fertility for men in the United States is primarily due to childlessness among low-income men. Yet because of the opposite effects of income on fertility for men and women, it is important to examine the effects of income net of spouse's income. An analysis of income from all sources and biological fertility data for husbands and wives from the Survey of Income and Program Participation (2014) shows that for men their own income is positively associated with the number of their biological children, while their spouse's income is negatively associated with total children ever fathered.

Corrigendum: Number of Childbearing Partners, Status, and the Fertility of Men and Women in the U.S.

[This corrects the article DOI: 10.3389/fsoc.2018.

Correction to: Sex Differences in the Association of Family and Personal Income and Wealth with Fertility in the United States.

Because of an error in calculation of coefficients reported in the article "Sex Differences in the Association of Family and Personal Income and Wealth with Fertility in the United States".

Corrigendum: Number of Childbearing Partners, Status, and the Fertility of Men and Women in the U.S.

[This corrects the article DOI: 10.3389/fsoc.2018.

Sex Differences in the Association of Family and Personal Income and Wealth with Fertility in the United States.

Evolutionary theory predicts that social status and fertility will be positively related. It also predicts that the relationship between status and fertility will differ for men and women. This is particularly likely in modern societies given evidence that females face greater trade-offs between status and resource acquisition and fertility than males.

IS FERTILITY AFTER THE DEMOGRAPHIC TRANSITION MALADAPTIVE?

Fitness is always relative to the fitness of others in the group or breeding population. Even in very low-fertility societies, individual fitness as measured by the share of genes in subsequent generations may still be maximized. Further, sexual selection theory from evolutionary biology suggests that the relationship between status and fertility will differ for males and females.

The primary parental investment in children in the contemporary USA is education : Testing the Trivers-Willard hypothesis of parental investment.

This paper tests the Trivers-Willard hypothesis that high-status individuals will invest more in sons and low-status individuals will invest more in daughters using data from the 2000 to 2010 General Social Survey and the 1979 National Longitudinal Survey of Youth. We argue that the primary investment U.S.

Why is the sex gap in feelings of depression wider in high gender equity countries? The effect of children on the psychological well-being of men and women.

This study uses data from 23 countries in the World Values Survey and the National Survey of Families and Households and finds that the sex gap in feelings of depression is wider in high gender equity societies even though overall levels of feelings of depression are lower. Using hierarchical logistic modeling, we find that the sex difference in feelings of depression is wider in high gender equity societies because children increase depression for women in high gender equity societies, while they reduce depression for women without paid employment in low gender equity societies. There is little difference in the effect of children on feelings of depression for men across societies.