大学生人格障碍者奖赏动机及决策缺陷研究

发布时间：2018-04-25 17:03

本文选题：人格障碍 + 付出努力的奖赏任务　；参考：《中国临床心理学杂志》2016年04期

【摘要】：目的:本研究采用奖赏动机和决策的行为范式,旨在探索人格障碍患者的非适应性行为和社会功能损害的潜在机制。方法:通过人格诊断问卷(Personality Diagnostic Questionnaire-4,PDQ+4)筛查和SCID—II人格障碍定式访谈,在两所高校一年级大学生中纳入170名人格障碍被试和112名正常被试,并要求其完成贝克抑郁量表和焦虑自评量表,以及计算机版的"付出努力的奖赏任务"(the Effort Expenditure for Rewards Task,EEf RT)。结果:人格障碍组在高概率水平及中等概率水平下对困难任务的选择率均显著低于正常组(P0.01),人格障碍各亚型在高概率水平下对困难任务的选择率也均显著低于正常组(P0.05)。广义估计方程结果表明组别、奖赏概率、奖赏幅度、期望值的主效应均显著(P0.01),组别和奖赏概率、组别和期望值的交互作用均显著(P0.01),但组别和奖赏幅度的交互作用不显著。结论:人格障碍者倾向于采用较少努力获得较小回报的奖赏相关决策,表现出明显的奖赏动机缺乏和对奖赏的钝化。人格障碍者在整合概率、期望值信息的奖赏敏感性方面与正常被试存在显著差异。
[Abstract]:Objective: to explore the potential mechanism of non-adaptive behavior and social dysfunction in patients with personality disorder using reward motivation and decision-making paradigm. Methods: through personality Diagnostic questionnaire screening and SCID-II personality disorder interview, 170 students with personality disorder and 112 normal subjects were enrolled in this study. They were asked to complete the Effort Expenditure for Rewards Task of anxiety and the computer version of the "reward for effort". Results: the selection rate of difficult tasks in the personality disorder group was significantly lower than that in the normal group at the high probability level and the middle probability level, and the selection rate for the difficult tasks in each subtype of personality disorder at the high probability level was significantly lower than that in the normal group. The results of the generalized estimation equation show that the main effects of group, reward probability, reward range and expected value are significant, and the interaction between group and reward probability, group and expectation is significant, but the interaction between group and reward range is not significant. Conclusion: people with personality disorder tend to make less effort to obtain less reward decision, showing obvious lack of reward motivation and passivation of reward. There were significant differences in the probability of integration and the reward sensitivity of expectation information between the patients with personality disorder and the normal subjects.
【作者单位】：中南大学湘雅二医院医学心理中心;中国人民大学心理学系;中南大学学生工作部;中南林业科技大学学生工作部;
【基金】：国家自然科学基金青年基金(30700236,81401120) 教育部人文社会科学研究规划基金(13YJA190015) 新世纪优秀人才支持计划(NCET-12-0557)
【分类号】：R749.91

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