> "Motivation Deficit in ADHD is Associated with Dysfunction of the Dopamine Reward Pathway" > "ADHD is typically characterized as a disorder of inattention and hyperactivity/impulsivity but there is increasing evidence of deficits in motivation. Using PET we showed decreased function in the brain dopamine reward pathway in adults with ADHD, which we hypothesized could underlie the motivation deficits in this disorder." Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3010326/