Attention deficit/hyperactivity disorder (ADHD) in pilots is considered a threat to flight safety. The U.S. Federal Aviation Administration has recently revised assessment pathways for applicants with attentional problems because of an increasing recognition that ADHD is a clinical condition with a broad symptom spectrum; some individuals may have a historical diagnosis which has been in remission for several years, while others may be using psychostimulants to enhance mental focus. This…