Articles

ADHD is a neurobehavioral developmental disorder char-acterized by a persistent pattern of inattention and/or hyper-activity, as well as poor impulse control (American Psychiatric Association [APA], 1994). Meta-analytical studies have reported that the worldwide prevalence of ADHD is about 5.5 % in children (Polanczyk, Lima, de Horta, Biederman, & Rohde, 2007) and 4.4 % in adults (Kessler et al., 2006; U.S. sample). The main theoretical explanation for ADHD symptom-atology has been referred to executive function (EF) deficits with important weakness in planning, working memory, response inhibition, and vigilance (Willcutt, Doyle, Nigg, Faraone, & Pennington, 2005). Along with EF deficits, ADHD participants have difficulties in many general cogni-tive abilities such as memory, visuo-motor competencies, behavioral control, and social skills (Crawford, Kaplan, &amp