Abstract:
OBJECTIVE:We compared patients with chronic schizophrenia and normal controls with respect to decision-making ability. Measures were implemented to control for the participants' intelligence levels as well as to ensure to use of a moderate sample size. The goal of this study was to confirm inconsistent results from previous studies which had stemmed from too small of a sample size, highly variable performance of normal controls, and not controlling for intelligence as a confounding factor. METHODS:Fifty-two chronic stable schizophrenic inpatients and 55 healthy controls participated in the study. We controlled for intelligence by including subjects with intelligence quotient's (IQ) between 80 and 120, examining any differences in decision-making performance between groups on the Iowa Gambling Task (IGT). We also addressed several issues relating to performance on the IGT, such as working memory and clinical symptoms. RESULTS:Schizophrenic patients were found to perform poorly on the IGT relative to normal controls (F(1,105)=17.73, p<0.001); however, more importantly, they also displayed the slow yet profitable shift from disadvantageous decks to advantageous decks over time. We also found that when compared with healthy controls, schizophrenic patients showed a poorer performance on the Wisconsin Card Sorting Test (WCST)(t=-5.48, p<0.001 for perseverative error) which was not related to their performance on the IGT. CONCLUSION:Based on previous literature and the results of this study, impaired sensitivity to both reward and punishment might be a more plausible explanation for the poor performance on the IGT in the schizophrenic group. We speculated that this impairment seemed related more to the different responsiveness to the magnitude than to the frequency of punishment, and to the different interpretation of less informative verbal cues in the context of the reinforcing schedule.
journal_name
Psychiatry Investigjournal_title
Psychiatry investigationauthors
Kim YT,Lee KU,Lee SJdoi
10.4306/pi.2009.6.1.26subject
Has Abstractpub_date
2009-03-01 00:00:00pages
26-33issue
1eissn
1738-3684issn
1976-3026journal_volume
6pub_type
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abstract: Objective:To identify attachment insecurity as an associative factor with unresolved psychological distress 1 year after surgery in the early breast cancer (BC) population. Methods:One-hundred fourteen participants completed the Hospital Anxiety and Depression Scale (HADS) and the Experiences in Close Relationship (E...
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pub_type: 杂志文章
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更新日期:2016-07-01 00:00:00
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journal_title:Psychiatry investigation
pub_type: 杂志文章
doi:10.4306/pi.2009.6.2.85
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journal_title:Psychiatry investigation
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更新日期:2017-01-01 00:00:00
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更新日期:2011-06-01 00:00:00
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journal_title:Psychiatry investigation
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更新日期:2013-12-01 00:00:00
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更新日期:2013-03-01 00:00:00
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journal_title:Psychiatry investigation
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doi:10.4306/pi.2012.9.3.293
更新日期:2012-09-01 00:00:00
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doi:10.4306/pi.2017.14.1.16
更新日期:2017-01-01 00:00:00
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更新日期:2017-03-01 00:00:00
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更新日期:2018-03-01 00:00:00
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pub_type: 杂志文章
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更新日期:2020-05-01 00:00:00
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journal_title:Psychiatry investigation
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doi:10.4306/pi.2013.10.4.326
更新日期:2013-12-01 00:00:00
abstract::Paruresis is a special type of non-generalized social phobia that involves fear and avoidance of urination in public restrooms. We administered eight 60-minute sessions of desensitization of triggers and urge reduction (DeTUR), an addiction protocol of eye movement desensitization and reprocessing (EMDR) therapy, to a...
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更新日期:2011-03-01 00:00:00
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更新日期:2017-07-01 00:00:00
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更新日期:2019-06-01 00:00:00
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更新日期:2015-04-01 00:00:00
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journal_title:Psychiatry investigation
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更新日期:2015-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2018-05-01 00:00:00
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更新日期:2019-03-01 00:00:00
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journal_title:Psychiatry investigation
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更新日期:2010-06-01 00:00:00
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更新日期:2019-12-01 00:00:00
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doi:10.4306/pi.2011.8.3.227
更新日期:2011-09-01 00:00:00