“…Their persistence has been associated with functional impairment in psychosocial, educational, professional and family functioning ( Biederman, Petty, Woodworth et al, 2012 ). In addition, compared to adults without ADHD, adults with ADHD experience higher levels of anxiety disorders, mood disorders, conduct disorders and antisocial personality disorder ( Hesson and Fowler, 2015 , Miranda et al, 2014 , Nogueira et al, 2014 ), as well as an increased risk of abuse/dependence on nicotine, alcohol, marijuana, cocaine, and other unspecified substances ( Breyer et al, 2014 , van Emmerik-van Oortmerssen et al, 2012 ). Of the core ADHD symptoms, hyperactivity/impulsivity generally shows more robust and consistent relations with dependence on various illicit substances than inattention which has only been associated with alcohol use ( Capusan et al, 2015 , Roberts et al, 2014 ).…”