Attention Deficit Hyperactivity Disorder, known by its Spanish acronym as ADHD, is a topic of great interest to professionals in psychology, psychiatry, and neuroscience in general, due to the negative impact it has on social functioning, personal, work, academic and family of those who suffer from it. This research aims to become a new contribution to the problems that ADHD represents in the world. Regarding its structure, this study starts from a detailed review of the existing theory about ADHD (from a historical perspective, neurobiology, neuropsychology, etiology, epidemiology, treatment, prognosis, among others) and reviews about cognitive development in the stage of childhood, to move to a methodological approach that allows obtaining data on the prevalence of ADHD symptoms in a sample of children, as well as analysis of results that establish the usefulness and reliability of different scales and / or diagnostic criteria in exploring symptoms adjusted to current definitions of this disorder
