This study tests an intervention that introduces a structured curriculum for five-year olds into the universal preschool context of Norway. We conduct a field experiment with 691 five-year-olds in 71 preschools and measure treatment impacts on children's development in mathematics, language and...

This study tests an intervention that introduces a structured curriculum for five-year olds into the universal preschool context of Norway. We conduct a field experiment with 691 five-year-olds in 71 preschools and measure treatment impacts on children's development in mathematics, language and...

Preschool programs can have lasting effects on education and labor market outcomes, but we have limited knowledge of what skills these programs should target. Executive functions at school-start predict academic success, yet we do not know if preschool program-induced improvements in executive...