This app is designed for people who wish to participate in scientific studies related to ADHD. Attention Deficit Disorder with hyperactivity (ADHD) or without hyperactivity (ADD) is a neurodevelopmental disorder that appears during childhood (childhood ADHD) which, if not properly treated, can have an impact during adolescence and even into adulthood. ADHD symptoms in children and adolescents affect behavior and are characterized by moderate or severe distraction, short attention spans, fidgeti