. This is not explained by differential fertility by social class over the cycle. Ability itself, as measured at age 10 …

ages during childhood. We draw on a unique set of merged population register data from Sweden over the period 1999 …-2008. This includes merged information at the individual level from the inpatient and outpatient registers, the population …

of a child. We utilize unique merged registers on the entire Swedish population, combining information on the date and … cause of death with parents' labor market outcomes, health outcomes, marital status, and subsequent fertility. We exploit …