药物成瘾者相关线索反应的自动化用药行为特征及其消退

采用ERP技术考察海洛因成瘾者相关线索下的用药行为的性质和神经机制, 在此基础上结合虚拟现实技术(VR)和途径偏向矫正训练(AAT), 探究基于“相关线索-习惯性用药”联结的自动化用药行为的动作消退、替代训练的有效性。研究发现, (1)相比对照线索, 成瘾者在相关线索下的反应时更长, N1波幅更小, N1潜伏期更短; 相比对照组被试, 成瘾者在相关线索下的行为任务的正确率更低, 反应时更长, N1波幅更小; N1波幅的组间组内差异和潜伏期的组内差异主要集中在中央区。(2)结合VR技术的途径偏向矫正训练后, 训练组被试的生理指标和途径偏向系数显著降低, 且显著低于对照组被试; 追踪测试中, 训练组被试的分数显著低于对照组。这表明相关线索下成瘾者的用药行为具有自动化、无意识的性质, 感觉运动区N1的异常活动是其神经机制之一。VR提取用药动作记忆-AAT消退替代训练, 可以有效削弱或消退成瘾者的成瘾动作倾向, 而且训练效果持续性较好, 可达到减少或停止现实情境中的用药和复吸行为的目的。     

5～7岁自闭症谱系障碍儿童环境文字阅读的特点

以带有不同类型情境线索(包括颜色、图标和字体)的环境文字为材料,采用命名任务考察5～7岁28名自闭症谱系障碍儿童和30名正常儿童阅读环境文字的特点。结果发现:(1)在去掉环境文字中的图标后,自闭症谱系障碍儿童和正常儿童命名文字的得分都显著降低;(2)在消除环境文字的字体线索后,自闭症谱系障碍儿童命名文字的得分显著降低,但正常儿童却较少受影响;(3)在阅读环境文字时,无论是自闭症谱系障碍儿童还是正常儿童,识字量越多,儿童越少依赖图标线索的提示。这些结果表明,自闭症谱系障碍儿童在阅读环境文字时,受图标线索和字体线索的影响较大,为制定促进其阅读学习的早期识字干预方案提供参考。     

The influence of alexithymia and music on the incidental memory for emotion words

Alexithymia is a multifaceted personality construct which encompasses difficulties in identifying and expressing feelings along with an externally oriented cognitive style. We investigated whether congruent vs. incongruent emotional musical priming (happy and angry music) during encoding would moderate the effects of alexithymia on recognition rates. We found that high alexithymia scorers recognized fewer joy and anger words than low scorers. Angry music decreased recognition rates in high alexithymia scorers compared to low alexithymia scorers. The congruency and incongruency effects between music and words depended on alexithymia level. The anger deficit in high alexithymia scorers and the possible support provided by happiness cues are discussed. Copyright © 2010 John Wiley & Sons, Ltd.     

权力、社会动机和问责对谈判知觉、行为和结果的影响

采用工作面试的谈判任务,运用模拟实验方法,探讨了不同权力谈判者(人事经理与应聘者)的社会动机在不同问责条件下对谈判的影响。156名(78组)大学生按同性别陌生人进行一对一的模拟谈判。结果表明:(1)包含亲社会人事经理的谈判组整体的固定馅饼知觉偏差较小。(2)问责提高了相同社会动机谈判组的联合收益和问题解决行为,但减少了混合社会动机谈判组的联合收益和问题解决行为。     

Affine representations in psychophysics and the near-miss to Weber’s law

A theoretical account for the near-miss to Weber’s law in the form of a power function, with a special emphasis on the interpretation of the exponent, was proposed by Falmagne [Falmagne, J.-C. (1985). Elements of psychophysical theory. New York: Oxford University Press] within the framework of a subtractive representation, P(x,y)=F(u(x)−g(y)). In this paper, we examine a more general affine representation, P(x,y)=F(u(x)h(y)+g(y)). We first obtain a uniqueness theorem for the affine representation. We then study the conditions that force an affine representation to degenerate to a subtractive one. Part of that study involves the case for which two different affine representations co-exist for the same data. We also show that the balance condition P(x,y)+P(y,x)=1 constrains an affine representation to be a special kind of subtractive representation, a Fechnerian one. We further show that Falmagne’s power law takes on a special form for a so-called weakly balanced system of probabilities, in which case the affine representation is Fechnerian. Finally, following Iverson [Iverson, G.J. (2006a). Analytical methods in the theory of psychophysical discrimination I: Inequalities, convexity and integration of just noticeable differences. Journal of Mathematical Psychology, 50, 271-282], we generalize the Fechner method to construct the sensory scales in a weakly balanced affine representation by integrating (derivatives of) just noticeable differences.     

Sustainable system-of-systems and francophone activity-centered approaches in ergonomics: Converging and diverging lines of dialogue

This paper initiates a dialogue between the sustainable system-of-systems (SSoS) approach and one particular situated approach of activity analysis within francophone activity-centered ergonomics (FACE). This paper explores the possible cross-fertilizations between FACE and SSoS in coping with the challenge of enlargement which ergonomists have to face in order to address sustainability issues. We present how the SSoS model and FACE have currently considered the challenges of sustainable development and the theoretical-methodological principles that frame their approaches. Then, eight topics of dialogue are introduced and debated in order to open the dialogue between the two approaches where emerging lines of convergence are generated. We conclude by further discussing the complementarity between FACE and SSoS in the objectives of their approaches and the levels analysed by each approach, and by highlighting the importance of taking into account the emergent and complex aspects of systems. One possible way forward might be to “situate the sustainable system-of-systems” while also “systemizing systems of sustainable situations” for the future.     

Power increases the self-serving bias in the attribution of collective successes and failures

Three studies test the effect of power on the self-serving bias in attributing collective outcomes. The first two studies measure (Experiment 1) and manipulate (Experiment 2) power and then measure the internal (vs. external) attribution of past successes and failures. Consistently, those who feel powerful show a stronger self-serving tendency to selectively attribute successes internally and failures externally than those who feel powerless. Experiment 3 compares the effects of power (control over others) and personal control (over oneself). We find that power increases the self-serving bias, but a lack of control can limit this effect by reducing the external attribution of failures. Presumably, people who lack control are disinclined to attribute outcomes—including failures—externally because doing so would further aggravate their lack of control. Together, these results suggest that power increases a bias in the attribution of success and failure and thus presents a fundamental challenge to good leadership.     

Powerless people don't yell but tell: The effects of social power on direct and indirect expression of anger

Expressing anger can engender desired change, but it can also backfire. In the present research we examined how power shapes the expression of anger. In Study 1, we found that powerless individuals were less inclined to express their anger directly but more inclined to express it indirectly by sharing it with others. Powerless participants’ reluctance to express anger directly was mediated by negative social appraisals. In Study 2, we replicated the effect of power on direct anger expression in a situation in which participants had actual power (or not). Anger was evoked in the laboratory using an ecologically valid procedure, and participants were given an opportunity to express anger. Study 3 showed that powerless participants expected direct anger expression to arouse more anger than fear in the target, whereas the opposite was true for indirect anger expression. Powerful participants always expected to elicit more fear than anger in the target.     

远期恐惧记忆再巩固更新机制的线索选择性特点

已有动物和人类研究均表明, 通过记忆的再巩固更新机制能有效削弱新形成的条件性恐惧记忆(1天), 并且存在线索选择性特点。然而创伤后应激障碍(PTSD)往往在形成相当一段时间后才能得到治疗, 且现实生活中人们通常一次习得对多个线索的恐惧。因此找到针对多线索创伤记忆的有效治疗方法显得尤为重要。目前未有人研究远期恐惧记忆的再巩固更新机制是否存在线索选择性特点。为探究远期恐惧记忆(>7天)的再巩固更新机制是否同样存在线索选择性特点, 本研究采用被试内实验设计, 以皮肤电作为恐惧反应指标, 多个线索作为条件刺激进行恐惧习得, 习得14天后给被试单独呈现一个线索进行恐惧记忆提取, 10分钟后进行消退训练, 24小时后对不同线索进行自发恢复测试。结果显示：未提取线索的自发恢复程度显著高于提取线索。说明远期记忆(14天)的再巩固更新机制同样存在线索选择性特点, 并确认了提取消退作为一种行为手段对远期恐惧记忆再巩固进行干预的有效性, 对临床干预具有一定指导意义。