BETHLEHEM, Pa.--(BUSINESS WIRE)--Researchers at Lehigh University’s College of Education and Lehigh Valley Hospital have found that non-medicinal interventions are highly effective in preventing behavioral and academic problems associated with Attention Deficit Hyperactivity Disorder (ADHD). Titled “Project Achieve,” the study was funded by the National Institute of Mental Health (NIMH) and was the largest study of its kind involving children between the ages of three and five who have shown significant symptoms of ADHD.