Wedge's article cites evidence from Bruce Perry, a trauma specialist based out of Houston. In his studies, Perry noticed that childrens' brain functions are influenced by both biology and environmental factors — particularly social factors.
For some with ADHD, it's possible to find a chemical imbalance that truly is causing the disorder. In cases like that, prescription drugs are the only measures that can help.
But when it's environmental or social, Perry believes non-pharmaceutical therapies could be more beneficial for children with the disease than commonly prescribed medication.