Interactive decision-making in people with schizotypal traits: a game theory approach.
Interactive decision-making in people with schizotypal traits: a game theory approach.
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DOI：
10.1016/j.psychres.2010.05.013
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发表时间：
2011-01-30
影响因子：
11.3
通讯作者：
Sanfey, Alan G.
中科院分区：
文献类型：
--
作者：
van 't Wout, Mascha;Sanfey, Alan G.
关键词：
调查精神分裂症患者中观察到的社会认知缺陷是否也存在于精神分裂型个体中的研究在很大程度上尚无定论，而且这些研究都没有检查社会互动行为。在这里，我们使用博弈论衍生的任务研究了精神分裂症状数量不同的个体的交互式决策行为。总共有 1691 名本科生接受了精神分裂型人格问卷简短版的筛查。我们选择了分布在整个精神分裂连续体中的 69 个人来参加最后通牒和独裁者游戏，他们在游戏中与人类和非人类计算机伙伴进行比赛。结果表明，较高水平的精神分裂症状，特别是阳性和无组织的精神分裂症状，与向所有伴侣提出更高的报价有关。此外，人际精神分裂症状的数量与人类伴侣对非常不公平的提议的接受率增加有关，这可能反映了对此类提议的情感反应迟钝。我们的结论是，阳性和无序的精神分裂症状与不太充分的讨价还价行为有关，类似于最近在精神分裂症患者中观察到的情况。在精神分裂症患者和具有更多精神分裂症状的个体之间观察到的最后通牒博弈行为的相似性有助于越来越多的证据表明社会认知缺陷可能代表了精神分裂症脆弱性的标志。
Studies that have investigated whether deficits in social cognition observed in schizophrenia are also present in schizotypal individuals have largely been inconclusive, and none of these studies have examined social interactive behavior. Here, we investigated interactive decision-making behavior in individuals differing in the amount of schizotypal symptoms using tasks derived from Game Theory. In total 1691 undergraduate students were screened with the Schizotypal Personality Questionnaire-Brief version. We selected 69 people distributed across the full schizotypal continuum to participate in Ultimatum and Dictator Games in which they played against human and non-human, computer partners. The results showed that higher levels of schizotypal symptoms, particularly positive and disorganized schizotypy, were related to proposing higher offers to all partners. Additionally, the amount of interpersonal schizotypal symptoms was associated with an increased acceptance rate of very unfair offers from human partners, possibly reflecting a blunted emotional response to such offers. We conclude that positive and disorganized schizotypal symptoms are associated with less adequate bargaining behavior, similar to what has been recently observed in patients with schizophrenia. The observed similarities on Ultimatum Game behavior between patients with schizophrenia and individuals with more schizotypal symptoms contribute to the growing evidence that social cognitive deficits may represent a marker of vulnerability to schizophrenia.
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