The upcoming special issue of the Journal of Attention Disorders highlights research on the prevalence of ADHD around the world as well as throughout the lifespan. These articles are important, not only further documenting the global reach of ADHD, but also shedding light on heretofore under recognized populations of children, adolescents, and adults who may benefit from various supports and treatments — many of which will be reviewed at the APSARD conference next week in Washington, D.C. A benefit of an APSARD membership is access to this important and informative journal.