The association among screen time, attention-deficit/hyperactivity disorder (ADHD) symptom development, and brain structure, and the neural mechanisms underlying the association between screen time and ADHD symptoms remain unclear. This study examines the relationships between the three using large-scale longitudinal data from the Adolescent Brain Cognitive Development (ABCD) study. Data on screen time, ADHD symptoms (measured via the Child Behavior Checklist), and brain structure were extracted…
