In this issue of JAMA Psychiatry, 2 large, longitudinal, population studies from Brazil1 and
the United Kingdom2 propose a paradigmatic shift in our understanding of attention …

Classification systems inevitably reflect the state of science at the time they are formalized
(1). In psychiatry, DSM-III revolutionized the field of mental health diagnosis in 1980 by …

For decades, ADHD and its nosological predecessors were “known” to afflict only
elementary school-age boys. By the early 1990s, longitudinal follow-up studies documented …

SAN FRANCISCO—Although attentiondeficit/hyperactivity disorder (ADHD) was long
perceived as a disorder of children, it is now recognized as a chronic condition persisting …

ATTENTION-DEFICIT/HYPER-activity disorder (ADHD) is a prevalent disorder estimated to
affect 3% to 9% of school-aged children and approximately 4% of adults worldwide. 1-3 …

Importance Attention-deficit/hyperactivity disorder (ADHD) is now recognized to occur in
adulthood and is associated with a range of negative outcomes. However, less is known …

TO THE EDITOR: The article by Guilherme Polanczyk, MD, et al.(1), in the June 2007 issue
of the Journal, provides important insights pertaining to the worldwide prevalence of …

(ADHD)? Is ADHD a creation of permissive Western culture rarely seen outside North
America? Do world regions with elevated ADHD rates hold the key to causation? Childhood …

Most child psychiatrists begin their clinical training as residents in adult psychiatry. One
developmental consequence of this educational trajectory is the assumption, not always …

The prevalence of attention-deficit/hyperactivity (ADHD) in adults has not been investigated
systematically, but estimates based on a prevalence of ADHD in children of 5% to 10% and …