The Comparison of Visual Perception Skills in 7 - 12-Year-Old Children With or Without Dyslexia Who have Attention Deficit Hyperactivity Disorder

Background: The recognition of problems occurring with ADHD comorbid disorders can largely facilitate their diagnosis and treat- ment. Objectives: The present study aims to compare the visual perception skills of 7 - 12-year-old children with or without dyslexia who have ADHD. Methods: This is a descriptive-comparative study that encompasses a statistical population of 7 - 12-year-old children with ADHD in Iran who were convenience-sampled in Tehran's therapeutic centers in 1394. The groups completed visual perception skills tests and the results were compared by independent T-test. Results: The results of the independent T-test demonstrate that the children with ADHD but without dyslexia had better form constancy, visual discrimination, visual closure, visual-spatial relationship, visual sequential memory, visual memory, and figure ground discrimination (P < 0.01). Conclusions: Due to the diculties suered by children with ADHD and dyslexia, we recommend early diagnosis, medical screen- ing, and use of suitable therapeutic methods to identify and minimize the number of children exposed to the high risks of undiag- nosed ADHD and dyslexia.