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Tsung-Hua Lu(Tsung-Hua Lu),Shih-Hsien Lin(Shih-Hsien Lin),Mei Hung Chi(Mei Hung Chi),Ching-Lin Chu(Ching-Lin Chu),Dong-Yu Yang(Dong-Yu Yang),Wei Hung Chang(Wei Hung Chang),Po See Chen(Po See Chen),Yen 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.1
Objective: Hypoactivity in the reward system among patients with attention deficit hyperactivity disorder (ADHD) is a well-known phenomenon. Whether the activity in the reward pathway is related to harm avoidance, such as in sensitivity to punishment, is unclear. Evidence regarding the potential difference between ADHD patients and controls in terms of this association is scarce. Methods: Event-related functional magnetic resonance imaging was conducted on subjects performing the Iowa gambling test. Fourteen adults with ADHD and 14 controls were enrolled in the study. Results: Harm avoidance was found to be positively correlated with the activities of the bilateral orbitofrontal cortex and right insula in individuals with ADHD. A group difference was also confirmed. Conclusion: Understanding the roles of harm avoidance and brain activation during risk tasks is important.
강빛나,김명선 한국임상심리학회 2013 Korean Journal of Clinical Psychology Vol.32 No.4
This study investigated deficits of decision-making in college students with schizotypal traits using the Iowa Gambling Task (IGT) and the relationships between IGT and Wisconsin Card Sorting Test (WCST) performance. Based on scores of the Schizotypal Personality Questionnaire, schizotypal-trait (n=21) and normal control (n=21) groups were selected. In the IGT, the schizotypal-trait group showed lower total net-score and block net-scores in the final two blocks(4th and 5th), and selected B card more frequently than the normal control group. The control group showed increased block net-scores along with progressing blocks, whereas the schizotypal-trait group showed no increase of block net-scores. In the WCST, the schizotypal-trait group made more total errors and perseverative errors than the control group, and there was a significant negative correlation between perseverative errors of the WCST and the 4th block net-score of IGT in the schizotypal-trait group. Overall, these results indicate that college students with schizotypal traits have a deficit of decision-making, which may result from a perseverative tendency for the initially preferred option to persist, and deficits of decision-making can serve as markers of schizospectrum disorders.