This paper uses register based data covering the entire population of Danish children enrolled in preschool in 2006 … are larger for boys who did not have access to male teachers previously and among children with less readily access to …

born children and in families with fewer sons. We then study the son preference-specific girl-penalty in early cognitive …

direct effect. This is true for the full sample of children, for boys and girls and for children in households whose mother …

explained by improvements in early parental investment. This study demonstrates that boosting children's early cognitive skills …