The effect of different methods to construct non-symbolic stimuli in numerosity estimation and comparison

Numerosity estimation and comparison tasks are often used to measure the acuity of the approximate number system (ANS), a mechanism which allows extracting numerosity from an array of dots independently from several visual cues (e.g. area extended by the dots). This idea is supported by studies showing that numerosity can be processed while these visual cues are controlled for. Different methods to construct dot arrays while controlling their visual cues have been proposed in the past. In this paper, these methods were contrasted in an estimation and a comparison task. The way of constructing the dot arrays had little impact on estimation. In contrast, in the comparison task, participants' performance was significantly influenced by the method that was used to construct the arrays of dots, indicating better performance when the visual cues of the dot arrays (partly) co-varied with numerosity. The present study therefore shows that estimates of ANS acuity derived from comparison tasks are inconsistent and dependent on how the stimuli are constructed. This makes it difficult to compare studies which utilised different methods to construct the dot arrays in numerosity comparison tasks. In addition, these results question the currently held view of the ANS as capable of robustly extracting numerosity independently from visual cues.     

Thought suppression: specificity in agoraphobia versus broad impairment in social phobia?

The paradoxical effects of intended thought suppression have been linked to psychological disorders, specifically anxiety disorders. So far, the evidence for thought suppression playing a major role in the disorder is mixed. One important issue is whether thought suppression is impaired only for thoughts related to the disorder, or if the ability for mental control is generally impaired in anxiety patients. This study compared groups of agoraphobics and social phobics with a healthy control group. All subjects were asked to suppress two topics related to the respective central fear of the two disorders and one nonspecific topic. We found a rather specific deficit in thought suppression for the agoraphobics; that is, when compared with the control group, we found the biggest differences for the agoraphobic fear. The social phobics seem to be characterized by a general impairment of mental control, affecting specific and nonspecific stimuli. In addition, among several psychopathological variables, social anxiety proved to be the strongest predictor for problems with thought suppression. Taken together, there are several indicators that generally impaired thought suppression may be an important feature of social phobia.     

Rousseau's Insight

My comment makes a point out ofRousseau's original insight: that education forsocial participation ought to start within thestudent's lifeworld, and not, as in our days, with the immediatedemands of modern, time-ridden consumerculture. When time is turned into a commodityand place is turned into a transit point forpeople constantly on the move, presence in acommon lifeworld is lost. I take issue with thedominant thinking of education in terms of timeand efficiency, and suggest that we startthinking of education more in terms of placeand presence. I propose that modern thinkers ofeducation – of which I mention a few here –contributed significantly to the pedagogy ofplace or presence. I don't see time as a stringmade up of past-present-future, but rather asan expanding mental and pragmatic universe ofhere-and-nows. The term kairos catchesthis presence as the capacity for doing theright thing at the right moment, that is, themoment when the past has prepared the ground sothat the future can come as a gift. Thisconception is, I think, an important ground forthe idea of an education for citizenship.     

Dislike and Envy as Antecedents of Pleasure at Another's Misfortune

Previous research related to pleasure at another's misfortune has focused on the role of envy and competition in inducing such feelings. Additionally, some views assume that this emotion is restricted to mild misfortunes. In this paper, we propose that other-directed negative emotions (e.g., dislike and anger), independent of envy, can give rise to pleasure at another's misfortune and the misfortune can be severe when these other emotions are causal. In addition to providing support for this view in three studies, pleasure at another's misfortune was also associated with different factors when other-directed negative emotions as opposed to envy served as its eliciting condition. For example, given that dislike caused pleasure at another's misfortune, the misfortune was more likely to be perceived as deserved, any misfortune was pleasing, and the observer was more reluctant to help than given envy as the cause.     

待岗人员的应付方式、控制感特点及其关系研究

对待岗人员的应付方式和控制感进行调查发现：（1）待岗人员对待压力的应付方式依次为退避、合理化、求助、自责、发泄。女性更多地采用这五种应付方式,年龄偏大组更倾向于选择合理化和退避,30岁是应付方式发展的转折时期;（2）待岗人员的控制感由高至低依次为环境变化、人际关系、情绪情感和生活方面的控制感。女性更能控制情绪情感;（3）在待岗人员应付待岗后各种压力的情境下,可将退避归为积极的应付方式,将自责、求助、发泄归为消极的应付方式。     

Maintaining Life Satisfaction: The Role of Positive Cognitive Bias

Recent research into population standards of life satisfaction has revealed a remarkable level of uniformity, with the mean values for Western populations clustering at around three-quarters of the measurement scale maximum. While this seems to suggest the presence of a homeostatic mechanism for life satisfaction, the character of such a hypothetical device is uncertain. This paper proposes that well-being homeostasis is controlled by positive cognitive biases pertaining to the self. Most particular in this regard are the positive biases in relation to self-esteem, control and optimism. Past controversies in relation to this proposition are reviewed and resolved in favour of the proposed mechanism. The empirical data to support this hypothesis are discussed in the context of perceived well-being as an adaptive human attribute.     

厌恶和恐惧情绪对跨期选择的不同影响：基于ERP的研究

本研究运用事件相关电位技术(ERPs)考察厌恶和恐惧情绪对跨期选择的影响。其中,厌恶和恐惧情绪采用情绪面孔图片进行启动,分析跨期选择任务中评估阶段所诱发的ERP成分。行为结果发现,与中性面孔相比,厌恶面孔启动使个体倾向于选择立即奖赏。ERP结果发现,在选项评估阶段,厌恶面孔比中性和恐惧面孔启动诱发更大的P2、P3和LPP波幅。这说明,厌恶情绪促使个体投入更多的注意和动机资源对跨期选项进行评估,进而使个体倾向即时满足。     

前瞻记忆意向后效应的年龄差异

前瞻记忆意向后效应会对日常生活产生负面影响,研究发现这种现象在老年人中尤其突出。近些年来,研究者们从内外两方面对影响前瞻记忆意向后效应年龄差异的因素进行了探讨,了解到认知老化所带来的抑制能力的衰退以及短时记忆缺陷是造成其年龄差异的主要原因。未来研究需进一步拓展对认知老化的机制和抑制控制能力的认识。另外,可以采用事件相关电位（Event-Related Potentials, ERPs）和功能性磁共振成像（Functional Magnetic Resonance Imaging, fMRI）等脑成像技术揭示前瞻记忆意向后效应年龄差异的加工机制及神经机制。     

双任务间隔对特征搜索方式的影响

采用RSVP序列,以两个实验探讨了双任务间隔对特征搜索方式的影响。要求试被首先辨认数字序列中包含的字母(任务一,T1),随后完成特征搜索任务(任务二,T2)。在实验一中,T2是检测在同时呈现的多个椭圆中是否有方向不一致的目标出现;在实验二中,T2是检测同时呈现的多个灰色圆点中是否有红色圆点出现。结果发现:随T1-T2间距缩短,T2的正确率显著下降;T2所含刺激数目的增加并未引起其正确率下降,即任务转换只影响特征搜索的绩效而未改变搜索方式,特征搜索仍以并行方式进行。根据动态控制理论,由于在本研究范式中两个任务之间存在任务转换过程,特征搜索应当为系列搜索。可见上述结果与动态控制理论不符。