Two large samples were assessed twice in Grade 1: the control group (Cont; N = 2302), which received no specific interventions, and the experimental group (Exp; N = 484), which received interventions associated with code-related skills (decoding and fluency). We estimated that a mean score of around 50 correctly read words per minute corresponded…

In a 3-year longitudinal study, we examined the relationships between oral language development, early training and reading acquisition on word-identification and reading-comprehension tests administered to a sample of 687 French children. Hierarchical linear models showed that both phonological awareness and oral comprehension at the age of 4…

In this paper, we estimate the effect of pupil's relative age within the first grade of primary school on mathematics and reading test scores at age 15. The main objective is to evaluate the long-term causal effect of relative age in the first grades of primary school on pupil's test in 16 different countries. We use the national rule for…