Decision‐making biases in suicide attempters with major depressive disorder: A computational modeling study using the balloon analog risk task (BART)

重性抑郁障碍 自杀意念 心理学 临床心理学 偏爱 萧条(经济学) 精神科 毒物控制 任务(项目管理) 人为因素与人体工程学 自杀预防 医学 认知 医疗急救 微观经济学 管理 经济 宏观经济学
作者
Qinyu Liu,Runqing Zhong,Xinlei Ji,Samuel Law,Fan Xiao,Yimin Wei,Shulin Fang,Xinyuan Kong,Xiaocui Zhang,Shuqiao Yao,Xiang Wang
出处
期刊:Depression and Anxiety [Wiley]
卷期号:39 (12): 845-857 被引量:8
标识
DOI:10.1002/da.23291
摘要

In the last decade, suicidality has been increasingly theorized as a distinct phenomenon from major depressive disorder (MDD), with unique psychological and neural mechanisms, rather than being mostly a severe symptom of MDD. Although decision-making biases have been widely reported in suicide attempters with MDD, little is known regarding what components of these biases can be distinguished from depressiveness itself.Ninety-three patients with current MDD (40 with suicide attempts [SA group] and 53 without suicide attempts [NS group]) and 65 healthy controls (HCs) completed psychometric assessments and the balloon analog risk task (BART). To analyze and compare decision-making components among the three groups, we applied a five-parameter Bayesian computational modeling.Psychological assessments showed that the SA group had greater suicidal ideation and psychological pain avoidance than the NS group. Computational modeling showed that both MDD groups had higher risk preference and lower ability to learn and adapt from within-task observations than HCs, without differences between the SA and NS patient groups. The SA group also had higher loss aversion than the NS and HC groups, which had similar loss aversion.Our BART and computational modeling findings suggest that psychological pain avoidance and loss aversion may be important suicide risk factor that are distinguishable from depression illness itself.
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