Cognitive treatment of pathological gamblers

This study evaluates the efficacy of a cognitive treatment for pathological gambling. Five pathological gamblers were treated in a multiple baseline across subjects design. Cognitive correction targeted the erroneous perceptions towards the notion of randomness. Four subjects reported a clinically significant decrease in the urge to gamble, an increase in their perception of control, and no longer met the DSM-IV criteria for pathological gambling. Therapeutic gains were maintained at the 6 month follow-up. Results suggest that cognitive therapy targeting the misconception of the notion of randomness is a promising treatment for pathological gambling, a refractory disorder to most therapeutic interventions.     

谁是最大的受害群体:群际受害者竞争

长期冲突的群体双方都致力于建构自己的最大受害者角色,他们认为自己比对方遭受了更多、更不公平、更不合理的伤害,这种现象称之为群际受害者竞争。群体通过强调冲突给自身造成的伤害后果的严重性与不公平性、伤害的处理方式等,努力声称内群体比对方遭受了更多的伤害。集体受害感、冲突责任归因、记忆的选择性、消除威胁的内在需要以及其他心理特点是群际受害者竞争的心理基础。通过构建"共同的受害者-侵犯者"认同以及增加群际接触等可以降低群际受害者竞争的水平,促进群际关系的和谐。今后的研究需要进一步完善群际受害者竞争的机制,深入探讨群际受害者竞争的其他影响因素,争取在干预策略上有所突破,关注非暴力冲突的群体情境中群际受害者竞争的特点,了解第三方群体对谁是最大受害者群体的认知和评价机制。     

Gambling and Delay Discounting in Japanese Students

The present study examined the relationship between gambling behavior and delay discounting with Japanese residents. Japanese university students were selected into pathological gambler and non‐gambling control groups using a Japanese version of the South Oaks Gambling Screen. In a discounting task, participants chose individually between a large delayed reward and a smaller immediate reward with varied delays. The discounting rate (k‐value) and the area under the curve were significantly higher and smaller, respectively, for the gambler group than for the control group. These findings show that Japanese gamblers discount delayed rewards more steeply than non‐gambling controls, as has been found in U.S. residents.     

Subjective relative income and lottery ticket purchases

Despite a return of only $.53 on the dollar, state lotteries are extremely popular, especially among the poor, who play the most but can least afford to play. In two experiments conducted with low‐income participants, we examine how implicit comparisons with other income classes increase low‐income individuals' desire to play the lottery. In Experiment 1, participants were more likely to purchase lottery tickets when they were primed to perceive that their own income was low relative to an implicit standard. In Experiment 2, participants purchased more tickets when they considered situations in which rich people or poor people receive advantages, implicitly highlighting the fact that everyone has an equal chance of winning the lottery. Copyright © 2007 John Wiley & Sons, Ltd.     

Reviews

Books reviewed:
Irving Kirsch (Ed.) How Expectancies Shape Experience
David F. Marks, Michael Murray, Brian Evans and Carla Willig Health Psychology, Theory, Research and Practice     

ALTERING THE NEAR‐MISS EFFECT IN SLOT MACHINE GAMBLERS

This study investigated the potential for recreational gamblers to respond as if certain types of losing slot machine outcomes were actually closer to a win than others (termed the near‐miss effect). Exposure to conditional discrimination training and testing disrupted this effect for 10 of the 16 participants. These 10 participants demonstrated high percentages of conditional discrimination testing performance, and the remaining 6 participants failed the discrimination tests. The implications for a verbally based behavioral explanation of gambling are presented.     

Utility of gambling under p(olynomial)-additive joint receipt and segregation or duplex decomposition

This article continues our exploration of the utility of gambling, but here under the assumption of a non-additive but p(olynomial)-additive representation of joint receipt. That assumption causes the utility of gambling term to have a multiplicative impact, rather than just an additive one, on what amounts to ordinary weighted utility. Assuming the two rational recursions known as branching and upper gamble decomposition, we investigate separately the rational property of segregation and the non-rational one of duplex decomposition. Under segregation, we show that each pair of disjoint events either exhibits weight complementarity or both support no utility of gambling, a property called UofG-singular. We develop representations for both cases. The former representation is a simple weighted utility with each term multiplied by a function of the event underlying that branch. The latter representation is an ordinary rank-dependent utility with Choquet weights but with no utility of gambling. Under duplex decomposition, we show that weights have the intuitively unacceptable property that there is essentially no dependence upon the events, making duplex decomposition, in this context, of little behavioral interest.     

外显竞争态度对内隐竞争与合作的影响

通过《竞争态度量表（中国版）》进行测验,选取良性竞争态度和过度竞争态度大学生各60名作为被试。采用偏好判断与再认测验相结合的实验范式,操纵三种不同的加工类型,考察两组被试对竞争动词、合作动词两类刺激的内隐与外显记忆贡献。结果显示：1）过度竞争态度者和良性竞争态度者都具有很强的内隐竞争性;2）过度竞争态度者比良性竞争态度者具有更强的内隐竞争性;3）良性竞争态度者比过度竞争态度者具有更强的内隐合作性。     

Construct Validity of the Iowa Gambling Task

The Iowa Gambling Task (IGT) was created to assess real-world decision making in a laboratory setting and has been applied to various clinical populations (i.e., substance abuse, schizophrenia, pathological gamblers) outside those with orbitofrontal cortex damage, for whom it was originally developed. The current review provides a critical examination of lesion, functional neuroimaging, developmental, and clinical studies in order to examine the construct validity of the IGT. The preponderance of evidence provides support for the use of the IGT to detect decision making deficits in clinical populations, in the context of a more comprehensive evaluation. The review includes a discussion of three critical issues affecting the validity of the IGT, as it has recently become available as a clinical instrument: the lack of a concise definition as to what aspect of decision making the IGT measures, the lack of data regarding reliability of the IGT, and the influence of personality and state mood on IGT performance.     

人际距离调节自我-他人的神经表征：来自oFRN的证据

为考察人际距离对自我-他人表征的影响, 采用金钱博弈任务检测了在自己操作、观察朋友操作和观察陌生同学操作时的脑电成分反馈相关负波(FRN)。结果发现, 观察任务产生了类似于自我操作时输钱反馈的负偏向, 即观察者反馈负波(oFRN); 在观察条件下, 被试自评与朋友的亲近程度高于同学(p<0.001), 两者引起的oFRN达到边缘显著性水平(p = 0.062), 亲近程度与oFRN呈显著相关(p = 0.041)。前者说明自我和他人具有相似表征, 后者则反映了自我对他人信息表征的替代性体验可能受人际距离所调节。