Differences in paper-and-pencil versus computerized line bisection according to ADHD subtype and hand-use |
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Authors: | Rolfe Mei Hsin Suzanne Hamm Jeff P Waldie Karen E |
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Institution: | Centre for Cognitive Neuroscience, Department of Psychology, University of Auckland, Private Bag 92019, Auckland, New Zealand. s.rolfe@auckland.ac.nz |
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Abstract: | Two versions of the line bisection task, paper-and-pencil and computerized, were administered to non-medicated children (5-12 years) with and without Attention-Deficit/Hyperactivity Disorder (ADHD). Fifteen children were classified with ADHD-Inattentive type (ADHD-I), 15 were classified with ADHD-Combined or Hyperactive-Impulsive type (ADHD-C), and 15 children served as controls. During the paper-and-pencil task, and irrespective of hand-use, participants with ADHD-C bisected lines with a right bias, whereas participants with ADHD-I showed a leftwards bias. Interestingly, during the computerized version, an opposite pattern of hemineglect was observed with a leftwards bias for participants with ADHD-C and a rightwards bias for participants with ADHD-I. These findings suggest that different task demands are associated with the paper-and-pencil and computerized tasks. The findings also suggest that the two subtypes differ according to their cognitive profile, and possibly differ as to their underlying neural impairment. |
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Keywords: | ADHD-Inattentive type ADHD-Combined type Dorsolateral prefrontal Parietal Pseudoneglect Hemineglect |
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