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Comorbidity of attention deficit hyperactivity disorder (ADHD) and reading disabilities (RD) is greater than what would occur by chance. Considering the well-documented adverse impact of both ADHD and RD on development, the presence of both conditions may lead to particularly poor outcomes for affected people. This chapter, which reviews 43 research studies carried out in the last decade that have focused on the link between ADHD and RD, is divided into two broad nuclei of contents. First, studies are described that contribute information about characteristics of the comorbid phenotype. Second, studies related to procedures directed toward evaluation and intervention in this problem are analyzed. The review carried out does not make it possible to extract definitive results on the exact nature of ADHD and RD comorbidity or, even less, reach conclusions about its causes. However, the literature-based evidence shows a cognitive profile of ADHD+RD characterized by failure of various functions that can produce more severe functional deficits and worse neuropsychological, academic, and behavioral outcomes. Furthermore, the analysis of the set of results from the studies shows a limited efficacy of pharmacological and psychopedagogical treatments, and highlights the need for continued research on this topic. From a clinical and educational standpoint, the conclusions derived from this review underline the importance of performing an exhaustive evaluation of children and adolescents with symptoms of ADHD and/or RD, in order to be able to plan interventions with greater possibilities of success in each case.

Recent research suggests that multi-component and contextualized interventions are a good option for the treatment of children with ADHD. The primary goal of the present investigation was to examine the efficacy of a multi-component psychosocial intervention involving children, with ADHD, their parents and their teachers. Forty-two children with ADHD were distributed in two groups: one with 27 children who received the intervention (experimental group) and the other with 15 children who received no intervention (control group). The effects of the intervention program were evaluated in three basic developmental areas: school learning, emotional adjustment and social adjustment. Once the intervention was over, the learning problems of children with ADHD who participated in the intervention were significantly reduced, based on the observations of both parents and teachers. Furthermore, social adjustment of the treated group improved significantly at the posttest evaluation. In contrast, in the group of children with ADHD who did not receive treatment, the learning and social problems remained stable.