[Excerpt] In one study, Traci M. Kennedy, of the University of Pittsburgh, and her colleagues, studied a mobile-health intervention specifically tailored toward young adults with attention-deficit/hyperactivity disorder (ADHD) at high risk for heavy drinking. Participants received frequent check-ins via their smartphones to help identify patterns in ADHD symptoms and their drinking. Based on their responses, participants got tailored feedback to improve self-awareness and reduce alcohol intake.