Attention Deficit Disorder (ADD) and Attention Deficit Hyperactive Disorder (ADHD) are two of the most common neurological disorders diagnosed in children and teens. ADD is characterized by the person's brain not being able to correctly regulate attention. This makes it hard to control impulses or complete a task that is perceived as routine or boring, while able to focus on a task found stimulating, such as a video game. ADD is a developmental disorder that is present in up to 7.8 percent of children and about 4 percent of adults.