This study investigated the neuropsychological functioning and its relationship to attention-deficit/hyperactivity disorder (ADHD) symptoms in nonclinical college students with ADHD traits using a comprehensive battery of neuropsychological tests. Based on the scores of the Conners' adult ADHD rating scales-Korean (CAARS-K) and adult ADHD self-report scale (ASRS), ADHD trait (n=31) and normal control (n=32) groups were selected. Verbal/nonverbal memory, attention, and executive functions were evaluated. Compared to the normal control group, the ADHD trait group showed significantly poor performances on attention, interference control, verbal fluency and working memory. In addition, the ADHD trait group showed poorer performance on d2, Stroop color-word condition, spatial span after controlling for the effects of depression and anxiety. In terms of relationships between neuropsychological functioning and ADHD symptoms in ADHD trait group, a negative correlation was observed between the performance of d2 test and DSM-IV total scores of CAARS-K. These results indicated that attention and executive functioning were impaired in college students with ADHD traits. These individuals seemed to have difficulties in attention/concentration, being disorganized, lacking persistence, being poor in planning, with poor academic and job performance.
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