Custody laws governing living arrangements for children following their parents' divorce have changed dramatically since the 1970s. Traditionally, one parent - usually the mother - was assigned sole custody of the child. Today, many divorced parents continue to share parental rights and...

The introduction of prenatal sex-detection technologies in India has led to a phenomenal increase in abortion of female fetuses. We investigate their impact on son-biased fertility stopping behavior, parental investments in girls relative to boys, and the relative chances of girls surviving...

How does a shock to sex ratios affect marriage markets and fertility? I use the drastic change in sex ratios caused by World War II to identify the effects of unbalanced sex ratios on Russian women. Using unique data from the Soviet archives, the results indicate that male scarcity led to lower...

This paper uses survey and experimental data from prison inmates and comparable non-inmates to examine the drivers of rising criminality in China. Consistent with socio-biological research on other species, we find that China's high sex-ratios are associated with greater risk-taking and...