Fertility has a strong biological component generally ignored by economists. Using the UK Biobank, we analyze the extent to which genes, proxied by polygenic scores, and the environment, proxied by early exposure to the contraceptive pill diffusion, affect age at first sexual intercourse, age at...

In this survey, we argue that the economic analysis of fertility has entered a new era. First-generation models of fertility choice were designed to account for two empirical regularities that, in the past, held both across countries and across families in a given country: a negative...

Previous studies usually use child gender-related variables as instruments for fertility choices in households. However if the child gender directly affect the outcome variable other than changing the number of children, the exclusion restriction will be violated. We propose a new...

Fertility has a strong biological component generally ignored by economists. Using the UK Biobank, we analyze the extent to which genes, proxied by polygenic scores, and the environment, proxied by early exposure to the contraceptive pill diffusion, affect age at first sexual intercourse, age at...

Most of the international studies on fertility are based on a female perspective. A major difficulty in couple-level research is the need for high-quality data that includes information on both partners. Using couple data from a longitudinal study conducted in Italy [2003-2007], a country with...