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Title: Dads and Cads: Parental Cohabitation and the Human Sex Ratio at Birth
Resulting in 1 citation.
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Norberg, Karen |
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Dads and Cads: Parental Cohabitation and the Human Sex Ratio at Birth Presented: Minneapolis, MN, Population Association of America Annual Meeting, May 2003 Cohort(s): NLSY79, Young Women Publisher: Population Association of America Keyword(s): Family Formation; Family Structure; Gender; Parental Influences; Sex Ratios Permission to reprint the abstract has not been received from the publisher. Evolutionary theory predicts that parents may bias the sex ratio of their offspring according to environmental conditions. Here, I test the prediction that parents may tend to produce males under conditions forecasting two-parent care, and females under conditions forecasting one-parent care. Using individual-level longitudinal data pooled from four public-use US surveys, I find that parents who were living with an opposite-sex partner or spouse were more likely to have a male child than parents who were living apart. The effect is small, but statistically significant (p < .0001). It is discernable when comparisons are made among sibling within the same family (OR 1.17, p |
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Bibliography Citation
Norberg, Karen. "Dads and Cads: Parental Cohabitation and the Human Sex Ratio at Birth." Presented: Minneapolis, MN, Population Association of America Annual Meeting, May 2003. |