Dr Robert Francis Eme is a Professor of Clinical Psychology at the Illinois School of Professional Psychology of Argosy University, Schaumburg Campus, USA. He has a long-standing interest in ADHD and sex differences in antisocial behavior. His recent publications on these topics include “Pediatric Traumatic Brain Injury and Attention Deficit Hyperactivity Disorder” and “Sex Differences in the Prevalence and Expression of Externalizing Spectrum Disorders.”