爱荷华博弈任务(IGT)与决策的认知神经机制

爱荷华博弈任务(IGT)是一项检查情感性决策机制的常用实验范式。据此, Damasio等人提出了躯体标记假设(SMH)解释情绪影响决策的神经生理机制。近期, 大量研究在IGT究竟是模糊决策还是风险决策、与情绪和认知的关系、与工作记忆和陈述性记忆的关系以及IGT的神经网络与分子遗传机制等方面积累了丰富资料。结果显示, IGT加工的早期由模糊决策主导, 情绪性躯体信号对引导决策选项的偏好可能起关键作用, 后期则倾向是一种风险决策, 认知评价和预期对选项偏向逐渐占优势; IGT与工作记忆的加工成分有相互重叠, 也需陈述性记忆的参与; IGT的加工不仅依赖于杏仁核、腹内侧前额皮层、眶额皮层等组成的情绪脑网络的活动, 还与背外侧前额皮层、海马、腹侧纹状体、岛叶皮层、辅助运动前区、扣带回皮层等许多脑区的活动有关; COMT和5-HTT的基因多态性会调节IGT相关的决策加工。总之, IGT是一项需要多重神经系统协同活动的决策加工任务, 且模糊与风险决策可能具有不同的遗传基础。     

Information processing in chronic pain disorder: A preliminary analysis

Researchers have alternately suggested selective attention, impaired stimulus filtering, and affective language deficiency models as accounting for multiple somatic complaints in persons with chronic pain disorder. The purpose of the present study was to establish the comparative usefulness of these three models for explaining somatic focus in a chronic pain population. Nine chronic pain patients evidencing high somatic focus (somatizing chronic pain patients), 10 chronic pain patients evidencing low somatic focus (nonsomatizing chronic pain patients), and 10 healthy control subjects were administered a computerized version of the emotional Stroop test as a test of these models. A total of 105 pain-, depression-, and neutral-content words were used as Stroop test stimuli. Stroop test color-naming response latencies were submitted to a two-way Group × Word Type mixed-model ANOVA, with Word Type as the repeated measure. Results reveal that neither the selective attention model nor the affective language deficiency model adequately explain Stroop test performance in somatizing chronic pain patients. Findings provide tentative support for the impaired stimulus filtering model, with somatizing chronic pain patients evidencing similar Stroop test response delays across all words. These results suggest that chronic pain sufferers misinterpret bodily sensations. Findings are discussed in terms of a bilevel approach for treatment of somatizing chronic pain patients that would include assisting the patient in accurate appraisal and interpretation of physical symptoms.     

Working Experientially and Somatically with Couples

SUMMARY

Working experientially and somatically with couples is a powerful method of accessing, exploring, and transforming both intra-psychic issues and interactional patterns. In this article, a number of methods of working experientially will be described, along with their underlying rationale. Basic assumptions about the nature of couple's difficulties and the role of the therapist also will be explored along with an integrated approach to assessment that provides a solid basis for these dramatic interventions.     

Anxiety associated with money market dealers — sex and cultural differences

This study examines the predictors of two measures of anxiety, viz. free-floating anxiety and somatic anxiety (Crown & Crisp, 1979), in (a) male and female money market dealers, and (b) money market dealers working in organizations of differing national ownership, in the City of London. Previous research suggests that differences in anxiety may be sex-based, and also that takeovers and mergers, particularly by foreign-based organizations, result in particular anxieties. Following interviews, 225 questionnaires were completed by dealers in the City of London. Analysis of questionnaire data indicates that the sources of anxiety are different for the sexes; and that the sources of anxiety are different for dealers working in U.K.-owned and U.S.-owned financial institutions. The implications of the results and suggestions for future research are discussed.     

Conscious knowledge influences decision‐making differently in substance abusers with and without co‐morbid antisocial personality disorder

Decision‐making impairment, as measured by the Iowa Gambling Task (IGT), is a consistent finding among individuals with substance use disorder (SUD). We studied how this impairment is influenced by co‐morbid antisocial personality disorder (ASPD) and conscious knowledge of the task. Three groups were investigated: SUD individuals without co‐morbid ASPD (n = 30), SUD individuals with co‐morbid ASPD (n = 16), and healthy controls (n = 17). Both SUD and SUD+ASPD participants had poor overall IGT performance. A block‐by‐block analysis revealed that SUD participants exhibited slow but steady improvement across the IGT, whereas SUD+ASPD participants exhibited initial normal improvement, but dropped off during the last 40 trials. Conscious knowledge of the task was significantly correlated to performance for controls and SUD participants, but not for SUD+ASPD participants. Our findings suggest that decision‐making proceeds differently in SUD and SUD+ASPD individuals due to differences in acquisition and application of conscious knowledge.     

The Emotion Mapping Activity: Preliminary evaluation of a mindfulness‐informed exercise to improve emotion labeling in alexithymic persons

Alexithymia is a psychoemotional trait associated with many treatment‐resistant psychological and social difficulties. Research suggests that these difficulties stem primarily from an inability to appropriately apply linguistic labels to emotional experiences and content. The present research introduces and preliminarily evaluates a novel mindfulness‐informed exercise to improve emotion‐labeling ability in alexithymic persons. Based in culturally universal patterns of somatic experience, the Emotion Mapping Activity (EMA ) directs alexithymic persons to reflect on their internal, somatic experiences as a source of information for interpreting and labeling emotional experiences. In the present study, 67 alexithymic persons completed a series of emotion‐labeling tasks either with or without assistance of the EMA . Results suggest that completion of the EMA may improve ability to label emotions that would be otherwise misinterpreted – without interfering with labeling that is already intact. Though further research is necessary, the present study suggests that the EMA may hold the potential to be incorporated into psychotherapy protocols as an exercise for improving emotion‐labeling ability in alexithymic clients.     

年级还是年龄？两种不同的效应来源 ——以青少年人格横断比较为例

发展研究中的一个关键问题是时间标记的选择。在对学龄期儿童各种心理品质发展的研究中,有两个主要的时间标记,即年龄和年级。年龄标示心理生理成熟时间和学校之外的经历,而年级则是指接受正规的学校教育经历。研究表明,它们是两种不同的效应来源,可以通过研究设计和统计程序加以分解。本文针对某市的中学六个年级8个年龄的学生采用横断研究法,测量他们的神经质、外向性、责任心等人格维度,并采用偏相关、多元回归方法和同年级同年龄方法对年龄和年级效应进行分解。结果表明,不同的人格维度的年级和年龄效应模式不同。本文最后通过上述实证数据分析,讨论年级和年龄效应分解的方法学议题及其意义和局限,并为相关研究提出建     

情绪与决策：躯体标记假设及其研究新进展

人类的决策被广泛认为是一个理性的和认知主导的过程,因此在决策研究中,任何形式的情绪都被避免。最近,一些神经科学的研究显示,情绪是人类决策中的一部分,它不可以与认知分析过程相分离,并且有些时候,情绪甚至在决策过程中起着重要的作用。躯体标记假设就提供了一个情绪如何影响人们决策的神经解剖和认知的框架,其核心为决策受躯体状态（或标识信号）所影响,躯体状态来源于生物调节过程,包括情绪和情感过程。该文章介绍了何为躯体标记假设,躯体标记假设的实验研究,以及研究中的新进展。