Razi Journal of Medical Sciences

  Background : Line bisection test is used for detecting inattention. In this test normal people usually show a rightward bias which indicates right hemisphere dominancy for visuo-spatial attention processing. The performance of people with Attention deficit/Hyperactivity Disorder (ADHD) in these kinds of visuo-spatial tests is different from normal people. The difference could be as a result of right hemisphere deficit in cases with ADHD. The aim of this study is comparing visuo-spatial attention in children with ADHD-combined subtype and normal children.

  Methods: In this cross-sectional study, the performance of 15 children with ADHD-combined subtype was compared with the performance of 15 children while matched for age, sex and IQ. The direction of each group bias was determined in line bisection test.

  Results: In ADHD-combined subtype group, bisected lines showed significant right side bias (p=0.005). Normal group also showed a rightward bias but it was not significant (p=0.08). In addition there was no significant difference between the two groups performance in this test.

  Conclusion: Both normal and ADHD-combined subtype groups showed a rightward bias in line bisection test and there was no difference between the two groups performance. More future studies are needed.