This retrospective study, undertaken in Norway, examines how reading skills level in 851 fifth graders are related to how the children used their language skills in play and everyday activities as toddlers. Data were collected with the Norwegian National Reading Test and through structured observations by staff in Early Childhood Education…

We estimated the effects of Norway's universal ECEC program - expanding access to 1- and 2-year-olds starting in the early 2000s - on standardized math and achievement tests in 5th grade (age 10) using a population-based survey sample (Norwegian Mother, Father, and Child Cohort Study, MoBa, n = 102,352), linked with national administrative records…