- Attention Deficit Hyperactivity Disorder by Dr. Russell Barkley on Google - The site provides a nice overall and current description of the disorder and was created by an expert in the field, Dr. Russell Barkley.
- Children and Adults with ADD (CHADD) Organization - The site contains a variety of information on ADHD as well as on local chapters of CHADD, the largest nonprofit organization for children and adults with ADHD.
- National Attention Deficit Disorders Association (ADDA) Organization - ADDA is a smaller nonprofit organization that appears to focus more on ADHD in adults. (website currently under construction)
- National Institute of Mental Health - www.help4adhd.org - This site was created jointly by experts at the National Institute of Mental Health and the CHADD organization. It provides free information on a variety of topics pertaining to ADHD.
- Russell A. Barkley, Ph.D. - Dr. Barkley’s site contains extensive information on the nature of ADHD, its history, and the International Consensus Statement of ADHD. It also lists more than 2300 scientific references on ADHD.
- Attention Research Update - A site organized by Dr. Rubiner from Duke University