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E-ISSN : 2733-4538
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.
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