Korean Clinical Psychology Association
[ Original Article ]
Korean Journal of Clinical Psychology - Vol. 41, No. 1, pp.32-42
ISSN: 1229-0335 (Print) 2733-4538 (Online)
Print publication date 28 Feb 2022
Received 06 Oct 2021 Revised 10 Jan 2022 Accepted 11 Jan 2022
DOI: https://doi.org/10.15842/kjcp.2022.41.1.004

Difference in Cognitive Dysfunction Between Adult ADHD and Neurotic Patients in the Korean Population: A Preliminary Research

Sooyun Cho1 ; Jung-ae Lee1, ; Dongwon Shin2
1Department of Clinical Psychology, Department of Psychiatry, Kangbuk Samsung Hospital, Seoul, Korea
2Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine, Seoul, Korea

Correspondence to: Sooyun Cho, Department of Clinical Psychology, Department of Psychiatry, Kangbuk Samsung Hospital, 308Ho 3rd flr, Cheongyang Bldg, 26 Saemunan-ro, Jongno-gu, Seoul, Korea; E-mail: sooyuncho@saumsung.com This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. The authors declare that there exists no conflict of interest.

© 2022 Korean Clinical Psychology Association


Adulthood Attention-Deficit Hyperactivity Disorder (ADHD) debilitates high-level executive functioning, attention and impulse control. There is a lack of consensus regarding the specific cognitive markers for ADHD compared with other psychiatric disorders that show attention-related problems as secondary symptoms. This study aimed to aid clinicians in utilizing existing tools for intelligence and cognitive function by investigating the key variables that differentiate ADHD from other mental disorders. As preliminary research, the study compared the performances of 35 patients with ADHD and 26 patients diagnosed with other neurotic disorders on the Korean Wechsler Adult Intelligence Scale-IV (K-WAIS-IV), Conners Continuous Perceptual Test 3rd Edition (CPT 3) and Conners Continuous Auditory Test of Attention (CATA). The ADHD group performed significantly lower on the Verbal Comprehension Index (VCI) and Working Memory Index (WMI) of K-WAIS-IV; the difference was significant in Similarity, Vocabulary and Arithmetic subtests. Perceptual Reasoning Index (PRI) and VCI differed significantly in the ADHD group unlike their neurotic counterpart. Of the variables in CPT 3, only detection differentiated ADHD from other neurotic disorders. Our results implicate there are novel standards and key variables that should be considered when differentiating ADHD from other psychiatric disorders.


ADHD, CPT, K-WAIS-IV, attention, diagnostic differentiation

Author contributions statement

SC, intern at Kangbuk Samsung Hospital, collected and analyzed the data, and prepared the manuscript. JL, a clinical psychologist and supervisor at Kangbuk Samsung Hospital, supervised the research process. DS, a psychiatrist at Kangbuk Samsung Hospital, supervised the medical examination of the participants. All the authors provided critical feedback, participated in the revision of the manuscript and approved the final submission.


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