Cooperation. (IMAGE) Frank Porter Graham Child Development Institute Caption Parents not only reported sustained improvements for their children's ADHD behaviors, but also for their social skills and interactions with peers. Credit Courtesy of UNC's Frank Porter Graham Child Development Institute. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.