情绪汉词的主动遗忘效应:ERP研究

尽管证明人类具有主动遗忘能力的研究比较多,但是,探索情绪汉词主动遗忘效应以及电生理机制的实验却非常少。本研究采用事件相关电位技术、T/NT范式探索情绪汉词主动遗忘效应。实验一(行为研究)的结果显示,在中性和情绪汉词条件下,不回忆组的正确率都显著低于基线组,即得到了主动遗忘效应。同时,情绪汉词的主动遗忘效应量小于中性汉词。实验二(脑电研究)结果显示,在200-300ms,Fz,Cz,Pz电极点,回忆组的P2波幅高于不回忆组。在300-400ms,在Fz,Cz,Pz电极点,不回忆组的N2波幅高于回忆组。N2跟抑制过程高度相关,提示抑制是主动遗忘的一个主要原因。在400-500ms,在Pz电极点,回忆组的LPC波幅高于不回忆组。顶叶LPC跟记忆提取高度相关,提示主动遗忘阻止了回忆,这可能是主动遗忘效应发生的内在机制     

An exploration of the experience of Christian counsellors in their work with both Christian and non‐Christian clients,with particular reference to aspects of cultural transition

Aim: This study explores the experience of Christian counsellors working in both Christian and secular settings, paying particular attention to the possibility of regarding their development as a form of cultural transition. Method: Heuristic methodology was used, interviewing 22 counsellors with varying churchmanship (i.e. Christian tradition/denomination) and counselling training. Findings/Discussion: A spectrum of experiences with both Christian and non‐Christian clients emerged. The level of overtness of the counsellors’ faith with these clients varied considerably. Parallels with the experience of these counsellors and that of immigrants in terms of cultural transition are discussed. Conclusions: The experience of Christian counsellors differs with respect to the level of Christian influence (i.e. Christian or secular input) in training, supervision and work context. Those with higher secular influence have less difficulty working with clients with different belief systems and values. Implications: Christian counsellors need to be more reflexive with respect to the effect of their own value systems when working with clients, particularly if they work mostly in a Christian context. Trainers need to be aware of cultural transition aspects in the development of counsellors who have a Christian faith.     

The person in narrative therapy: a post-structural,Foucauldian account

Having a facial anomaly is more than likely to cause some degree of psychological discomfort. Prior to establishing the most appropriate psychological intervention, there is a need to determine how having an atypical appearance manifests in day-to-day life. Counselling/psychotherapy provides people with the opportunity to talk about their experience - to tell their story. the aim of this heuristic investigation is to determine the lived experience of having a cleft lip and the potential need for counselling/psychotherapy. A heuristic approach was selected as the most appropriate method and one which would enable participants to talk about their experience. It also requires the researcher to have personal experience of the phenomenon. This study highlights the lack of opportunity to talk about how the presence of a facial disfigurement impacts upon life. Even within the family, it seems, the norm was that ‘it' was there, yet not spoken about. Counselling/psychotherapy could therefore provide a form of education. Provision of such a service would give people a choice. A discussion on the limitations of heuristics indicates the importance of the researchers' awareness, of their own experience, in relation to the phenomena being investigated. In conclusion, a counsellor/ therapist is considered to be an essential member of the multi-disciplinary cleft team, caring for persons with clefts from birth to maturity.     

The source of the truth bias: Heuristic processing?

People believe others are telling the truth more often than they actually are; this is called the truth bias. Surprisingly, when a speaker is judged at multiple points across their statement the truth bias declines. Previous claims argue this is evidence of a shift from (biased) heuristic processing to (reasoned) analytical processing. In four experiments we contrast the heuristic‐analytic model (HAM) with alternative accounts. In Experiment 1, the decrease in truth responding was not the result of speakers appearing more deceptive, but was instead attributable to the rater's processing style. Yet contrary to HAMs, across three experiments we found the decline in bias was not related to the amount of processing time available (Experiments 1–3) or the communication channel (Experiment 2). In Experiment 4 we found support for a new account: that the bias reflects whether raters perceive the statement to be internally consistent.     

Knowledge and availability

The mentioning of error-possibilities makes us less likely to ascribe knowledge. This paper offers a novel psychological account of this data. The account appeals to “subadditivity,” a well-known psychological tendency to judge possibilities as more likely when they are disjunctively described.     

Both differences in encoding processes and monitoring at retrieval reduce false alarms when distinctive information is studied

ABSTRACT

Recent research has provided evidence for memory modifications when a post-reactivation treatment (e.g., drugs, new learning) interferes with the memory re-stabilisation (reconsolidation) process. This finding contradicts the long-standing consolidation theory and has high practical and theoretical implications. With an object-learning paradigm, it was shown that episodic memory is highly susceptible to interfering material presented after its reactivation [Hupbach, A., Gomez, R., Hardt, O., &; Nadel, L. (2007). Reconsolidation of episodic memories: A subtle reminder triggers integration of new information. Learning &; Memory, 14, 47–53. doi:10.1101/lm.365707]. The reactivation of a learned list (List 1) before a second learned list (List 2) led to intrusion errors from List 2 when trying to recall List 1, but not vice-versa. Their work has been widely cited and their findings have been explained according to reconsolidation theory. For the first time, we systematically explored the role of retrieval context as an alternative explanation for Hupbach’s results. Our results showed that the intrusion effect occurs independently of the retrieval context (Experiment 1). Additionally, even when the intrusion rate probability is increased (i.e., List 1 memory test is performed in the List 2 learning context), the groups that did not reactivate the original list did not commit intrusion errors (Experiment 2). In sum, we found that the intrusion effect critically depends on the presence of reactivation, discarding alternative interpretations of the results.     

Reducing the Linear Perception of Nonlinearity: Use of a Physical Representation

Research shows that while judging accumulations of quantities over time (e.g., money in a bank account or CO₂ in Earth's atmosphere), people assume that the shape of the accumulation is similar to the shape of the inflow (i.e., people rely on a correlation heuristic). Relying on the correlation heuristic is particularly worrisome for Earth's climate, as judging the CO₂ accumulation according to its emissions (inflow) would underestimate the actual (nonlinear) increase. This misperception undermines the seriousness of climate problem and results in wait‐and‐see behavior. We report two experiments where the effectiveness of a physical representation is compared with graphical and text representations in reducing people's underestimation of nonlinear accumulation in different contexts and problems. A physical representation presents an accumulation using a picture that works as a metaphor. In the first experiment, participants drew the shape of an accumulation over time relying on physical or graphical representations in one of two contexts: carbon dioxide and marbles. Although the participants underestimated the accumulation in both contexts, underestimations were reduced in the physical representation compared with the graphical representation. In the second experiment, we extended the evaluation of physical representations against both text and graphical representations in two different climate problems (with linearly increasing or decreasing inflow). Again, underestimations of the accumulation were reduced in the physical representation compared with the other two representations, regardless of the nature of the problem. We discuss implications of using the physical representation for improving people's estimates of nonlinear CO₂ accumulation. Copyright © 2011 John Wiley & Sons, Ltd.     

Turn right or turn left? Heuristic of adhering to the direction of destination

It has been found that humans not only tend to avoid the middle routes and prefer the peripheral routes among multiple choices, but also rely on the ‘initial segment strategy’ to select the route. In this paper, we propose a new heuristic which humans apply during route selection: Participants prefer the route whose initial direction lies in the direction of their final destination, while avoiding the route whose initial direction does not. Four maps were designed. The pathways, on different maps, constituted a parallelogram, a rectangle and a square. Pedestrians were instructed to select a route from an origin to a destination on one of the maps. The results confirm the application of the newly proposed heuristic. Other possible factors, such as handedness, route angles and occurrence of turns were excluded. Moreover, the heuristics of deferring decision and relying on initial straightness are not supported. Copyright © 2010 John Wiley & Sons, Ltd.     

意识思维和无意识思维对复杂决策的影响

以大学生为被试,以汽车作为实验材料,通过对12条汽车属性信息的操纵,设置出四款优差不同的汽车。通过对汽车的优差选择,探察在属性信息逐条呈现的情况下,有意识思维与无意识思维对复杂决策的影响。研究结果表明:在反应时上,无意识思维下的决策时间要比有意识思维下的决策时间长;在选择的正确率上,有意识思维决策的结果要优于无意识思维决策的结果;在信息回忆量上,有意识思维决策的回忆量要多于无意识思维决策的回忆量,这与无意识思维理论是相违背的。     

选项框架和认知负载对风险决策的影响

本研究采用实验法探讨了选项框架和认知负载对风险决策的影响。结果发现:(1)不同的认知负载条件下,被试在正向框架下表现出风险回避,负向框架下表现出风险寻求,出现了框架效应现象;(2)相对于认知负载条件下,被试在无认知负载的负向框架下更偏好于风险选项,而正向框架下的风险偏好没有显著变化,即无认知负载条件下框架效应较强。这表明,框架效应不仅仅是启发式系统作用的结果,分析式系统也在其中发挥着重要的作用。