Adult-diagnosed and childhood-diagnosed attention deficit/hyperactivity disorder: cognitive and environmental contributions to symptom severity across different age of diagnosis (opens in new tab)

BackgroundAttention deficit/hyperactivity disorder (ADHD) is characterized as a neurodevelopmental disorder onset in childhood. However, accumulating evidence suggests that some adults may fulfill current diagnostic criteria for ADHD despite reporting no clinically significant symptoms during childhood. It remains unclear whether executive function and environmental factors relate differently to symptom severity across different age of diagnosis.MethodsSeventy-two adults with ADHD were recrui...