Children can experience the relief of some symptoms of attention deficit hyperactivity disorder (ADHD) by participating in an intensive memory training program based on software designed to improve their working memory. Researchers at Ohio State University found that the program had a significant impact on many children with ADHD, particularly in the areas of attention, planning, organization, and working memory. The software was developed in Sweden by Cogmed in partnership with the Karolinska Institute. The software comprises 25 progressively more challenging exercises in the form of a computer game to be completed by children with ADHD within five to six weeks