Abstract
This retrospective study investigates the cognitive profiles of individuals with ADHD, categorized by the age at which they were diagnosed—either during childhood or adolescence. The sample comprised 424 participants aged 6 to 20 years, with a predominance of males. Participants were assessed using a variety of neuropsychological standardized tests. The study found significant differences in cognitive performance between those diagnosed in childhood and those diagnosed in adolescence. Specifically, childhood diagnoses were associated with poorer performance in vigilance, selective attention, and motor control, while adolescent diagnoses were linked to lower scores in the environment’s perception of their flexibility, working memory, and planning. Binary logistic regression analyses indicated that the neuropsychological profile for the combined ADHD subtype did not vary by age group, in contrast with the inattentive subtype, in which different cognitive constructs were identified serving as significant predictors. Findings suggest that the cognitive challenges associated with ADHD evolve with development, highlighting the need for age-appropriate diagnostic criteria and interventions.
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