Single Mothers, Single Fathers: Gender Differences in Fertility after a Nonmarital Birth

HIGH PREVALENCE OF VOLUNTARY STERILIZATION AMONG AMERICAN WOMEN EXPLAINED BY TRADE-OFFS RESULTING FROM MALE PARENTAL COMMITMENT

Tubal ligation is the modal form of family planning among American women aged 30 and older. As the preference for tubal ligation over cheaper, lower risk and more reliable methods, such as vasectomy, has puzzled experts, a theoretical approach that explains this preference would be useful. The present study investigates the high prevalence of voluntary sterilization among American women from the perspective of life history theory, arguing that the trade-offs between investing in current and future offspring will favour tubal ligation when women cannot obtain reliable male commitment to future parental investment. Data came from the National Survey of Fertility Barriers (NSFB), a nationally representative survey of 4712 American women aged 25-45 conducted between 2004 and 2007. Four novel predictions of the prevalence of tubal ligation, drawn from life history theory, were developed and tested: 1) it is most common among unpartnered women with children, and least common among married women with children; 2) it is negatively correlated with age at first birth; 3) it is least common among highly educated women without children, and most common among less educated women with children; and 4) among women with two or more children, it is positively correlated with lifetime number of long-term partners. These predictions were tested using multivariate regression analysis. The first prediction was not supported: women with children were more likely to be sterilized, regardless of their marital status. The other three predictions were all supported by the data. The results suggest that trade-offs influence women's decisions to undergo voluntary sterilization. Women are most likely to opt for tubal ligation when the costs of an additional child will impinge on their ability to invest in existing offspring, especially in the context of reduced male commitment.

Household Incarceration in Early Adolescence and Risk of Premarital First Birth

In the second half of the 20th century, the United States experienced a massive increase in incarceration. In response to this growth, a burgeoning scholarship has sought to explore the collateral consequences of incarceration for young children. However, this scholarship has less frequently explored the impact of incarceration on long-term outcomes, how incarceration experienced in periods other than early childhood impacts children, and whether the incarceration of family members other than parents has negative implications for children. Using data from the children of the mothers in the National Longitudinal Survey of Youth, I explore whether household incarceration experienced in early adolescence is associated with a child's risk of growing up to have a premarital first birth. The results suggest that, even after including a rich set of covariates, children who experience household incarceration in early adolescence are at greater risk of having a premarital first birth, particularly when the father or an external household member is incarcerated.

"Like Parent, Like Child?": The intergenerational transmission of nonmarital childbearing

Data from the 2002 National Survey of Family Growth (N=11,180) are used to examine the intergenerational transmission of nonmarital childbearing for US men and women. Findings suggest that being born to unmarried parents increases the risk of offspring having a nonmarital first birth, net of various confounding characteristics. This intergenerational link appears to particularly operate via parents' breaking up before offspring are age 14 and offspring's young age at first sex. While the link across two generations in nonmarital childbearing is not accounted for by parents' socioeconomic status (measured as fathers' education), several mediating factors vary by socioeconomic background. Gender and race/ethnicity also moderate the intergenerational transmission of nonmarital childbearing. This research sheds light on the prevalence of, and process by which, nonmarital childbearing is repeated across generations, which has important implications for long-term social stratification and inequality.

Unintended fertility and the stability of coresidential relationships

Having an unintended birth is associated with maternal and child health outcomes, the mother-child relationship, and subsequent fertility. Unintended fertility likely also increases the risk of union dissolution for parents, but it is unclear whether this association derives from a causal effect or selection processes and whether it differs by union type. This article uses data from the 2002 National Survey of Family Growth to compare union stability after intended and unintended births in coresidential relationships. Results show that coresidential couples are more likely to break up after an unintended first or higher-order birth than after an intended first or higher-order birth, even when accounting for stable unobserved characteristics using fixed-effects models. The negative association is stronger for marriages than cohabitations, despite the overall higher dissolution rate of cohabiting unions. We conclude that unintended fertility at any parity is disruptive for coresidential couples in ways that increase the risk of union dissolution.