The Statistics of ADHD

ADD by the numbers - a summary of the research of Russell Barkley,Ph.D.

A quick summary of statistical research of Russell Barkley

  • On average, there are 1 to 3 children who have ADHD in every classroom of 30 students.
  • Three to six more boys are diagnosed than girls.
  • The rate of emotional development for children with ADHD is 30% slower than their non-ADD peers. For example, a 10-year-old with ADHD operates at the maturity level of about a 7-year-old; a 16-year-old beginning driver is using the decision making skills of an 11-year-old.
  • 65% of children with ADHD have problems with defiance, non-compliance and other problems with authority figures, including verbal hostility and temper tantrums.
  • 25% of students with ADHD have other serious learning problems in one or more of these areas: oral expression, listening skills, reading comprehension, and math.
  • Half of all ADHD students have listening comprehension problems.
  • About one-third of these students have one or more of the following:
  1. Languange deficits (poor listening comprehension, poor verbal expression, poor reading comprehension)
  2. Poor organizational skills
  3. Poor memory
  4. Poor fine motor skills
  • Students with ADHD are two to three times more likely to have problems with expressive language than their non-ADD peers.
  • 75% of boys with ADD are hyperactive; 60% of girls with ADD are hyperactive.
  • 40% of children who have ADHD have at least one parent who has ADHD
  • 50% of children who have ADHD also have sleep problems.
  • Parents of a child who has ADHD are three times as likely to separate or divorce as parents of non-ADD children
  • Teenagers with ADHD have almost four times as many traffic citations as their non-ADD peers.
  • Teens with ADHD have four times as many car wrecks and are seven times more likely to have a second accident.
  • 21% of teens with ADHD skip school repeatedly.
  • 35% eventually drop out of school.
  • 45% have been suspended.
  • 30% have failed or had to repeat a year of school.

TAGS: Myths About ADHD, Diagnosing Children with ADHD, Teens and Tweens with ADHD

Share your comments, questions and advice on ADDConnect!
Join our online support groups to learn about treatment options, coping mechanisms, related conditions and much more.

Copyright © 1998 - 2016 New Hope Media LLC. All rights reserved. Your use of this site is governed by our Terms of Service and Privacy Policy.
ADDitude does not provide medical advice, diagnosis, or treatment. The material on this web site is provided for educational purposes only. See additional information.
New Hope Media, 108 West 39th Street, Suite 805, New York, NY 10018