methylphenidate

Attention Deficit/Hyperactivity Disorder (ADHD) is characterised by developmentally inappropriate le-vels of inattention, impulsivity and hyperactivity. As might be expected of a disorder in which inhibitory deficits form part of the diagnostic criteria, deficits in response inhibition in ADHD have been evidenced in a number of studies. To date, the tasks used in such studies have required participants to inhibit the learned stimulus-response associations that result in unwanted behavior. However, no research has ex-amined the inhibition of stimulus-stimulus associa-tions, formally ‘conditioned inhibition’. The present study used video game style conditioned inhibition procedures, developed for children and adolescent