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Cognitive impulsivity in ADHD syndromeThe aim of this study was to investigate the differences between cognitive impulsivity in ADHD children (n = 39) and control group (n = 30). The second purpose was to check if behavioral impulsivity described by parents was related to cognitive impulsivity. The Matching Familiar Figures Test was used to assess cognitive impulsivity and ADHD Rating Scale for Parents was used to describe behavior of children. Children were in the age range of 9–12 years.Compared with normal children, ADHD group made much more errors (mismatches) in MFFT. There were no significant differences in the mean time in making a response between both groups. The study showed that ADHD group were slow inaccurate performers rather than fast inaccurate performers. The ADHD children were less reflexive and less effective in their cognitive reactions than controls.There were no significant correlations between behavioral impulsivity and cognitive impulsivity in ADHD group.
EN
According to neuropsychological models of ADHD, deficits of working memory are regarded as an essential cognitive phenotype for the disorder (Barkley, 1997; Castellanos & Tannock, 2002; Martinussen & Tannock, 2006). The primary goal of the present study was to compare the functioning of the phonological loop and the central executive system in the situation of manipulation of verbal material in children with ADHD (inattentive and mixed subtypes) and without ADHD. 132 children 9-11 years old were examined. Results revealed worse performance of tasks in ADHD children than in healthy children. It may be considered not as a result of difficulties in the performance of operations on verbal material (central executive system) but as a consequence of difficulties in the material maintained in the phonological loop of verbal working memory. There were no differences between mixed ADHD and inattentive ADHD groups.
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