Journal of the Korean Academy of Child and Adolescent Psychiatry

Korean Academy of Child and Adolescent Psychiatry (대한소아청소년정신의학회)
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Comparing Intelligence Test Profiles to Assess Tourette's Disorder with Attention-Deficit Hyperactivity Disorder

  • Kim, Woo Hyun (Department of Psychiatry, Chonbuk National University Medical School) ;
  • Park, Tae Won (Department of Psychiatry, Chonbuk National University Medical School) ;
  • Park, Juhyun (Seoul National University College of Medicine) ;
  • Chung, Sang-Keun (Department of Psychiatry, Chonbuk National University Medical School) ;
  • Yang, Jong-Chul (Department of Psychiatry, Chonbuk National University Medical School) ;
  • Park, Jong-Il (Department of Psychiatry, Chonbuk National University Hospital) ;
  • Kim, Eun-Ji (Department of Psychiatry, Chonbuk National University Medical School) ;
  • Cho, Eun-Cheong (Department of Psychiatry, Chonbuk National University Hospital) ;
  • Park, Jae Cheol (Department of Statistics, Chonbuk National University)
  • Received : 2016.06.22
  • Accepted : 2016.09.26
  • Published : 2017.01.01
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Abstract

Objectives: The study compared the intelligence test profiles of Tourette's Disorder (TD), attention-deficit hyperactivity disorder (ADHD), and TD with ADHD (TD+ADHD) groups. Methods: The Korean Wechsler Intelligence Scale for Children-third edition (K-WISC-III) and Korean Wechsler Intelligence Scale for Children-fourth edition (K-WISC-IV) were administered to 13 children and adolescents with TD, 17 children and adolescents with ADHD, and 15 children and adolescents with TD+ADHD. Each parameter was compared among the groups using the Kruskal-Wallis test. Results: The mean scores of the freedom from distractibility/working memory index (FD/WMI) and the digit span and arithmetic subtests of the TD+ADHD group were significantly lower than those of the TD group. Conclusion: According to the intelligence test results, the comorbid ADHD+TD group showed a significant decrease in working memory compared to the TD group. These findings are similar to those of previous research on cognitive functions and suggest that the TD+ADHD comorbid and TD alone groups exhibit different endophenotypes. The results also imply that WISC-III and WISC-IV, the most commonly used intelligence tests clinically, are effective in evaluating cognitive functions such as attention. Further research is required to confirm these results.

Keywords

References

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