Lower birth weight as a risk factor for the development of attention deficit/hyperactivity disorder (ADHD) symptoms. Birth weight significantly predicted ADHD symptoms from early childhood to late adolescence. Our findings provide stringent evidence for environmental effect of lower birth weight on the causal pathway to elevated ADHD symptoms. Effect of birth weight persists across a 14‐year period… Continuar lendo The role of birth weight on the causal pathway to child and adolescent ADHD symptomatology.