This article reports on the results of a groundbreaking brain-imaging study suggesting that attention deficit hyperactivity disorder stems from delayed brain maturation. Implicit in some of the news coverage was the hopeful idea that many--even most--children eventually grow out of the disorder. But that's not exactly true, according to a researcher who led the brain-imaging study and other experts. Experts fear that potential misinformation about the disorder will cause clinicians, parents, and educators to take a wait-and-see approach with students who have ADHD, rather than tackle the problem head-on. "This wasn't showing that brains catch up and become completely normalized," said Dr. Philip Shaw, the lead researcher, referring to the new findings. "There are still lots of very important differences." He stressed that two-thirds of children will still have symptoms as adults. Dr. Shaw also cautions against pairing the NIMH findings with a study of children with behavior problems, which some coverage has done.