In a 2005 paper Kanezawa proposed a generalisation of the classic Trivers- Willard hypothesis. It was argued that as a result taller and heavier parents should have more sons relative to daughters. Using two British cohort studies, evidence was presented which was partly consistent with the...

The Trivers Willard hypothesis that higher maternal quality is associated with a higher sex ratio is tested using a large population survey from 12 European countries. Several outcomes are studied, the proportion of children born who are male and the sex of the first three children. The...

In a 2005 paper Kanezawa proposed a generalisation of the classic Trivers-Willard hypothesis. It was argued that as a result taller and heavier parents should have more sons relative to daughters. Using two British cohort studies, evidence was presented which was partly consistent with the...

While there is a well-established, large positive correlation between mental and physical health and education outcomes, establishing a causal link remains a substantial challenge. Building on findings from the biomedical literature, we exploit specific differences in the genetic code between...