People who have ADHD typically are highly impulsive and do not react normally in many social situations. They also, typically, have a problem in communication. Now there are those who do have ADHD and have none of these problems, but genearally, people with ADHD have these problems. Taking the meds help them to not be so impulsive and it helps them slow down and it gives them a chance to think before they open their mouths. I speak from experience.