两难情景下任务结构与价值取向的效用特征转换

实验采用两难对策任务的情景模拟 ,研究决策者在群体决策情景当中的效用特征转换。 6 2名被试参加了实验。研究发现 ,任务结构与个体价值取向都是影响决策效用特征转换的重要因素 ,并且这种效用特征的转换有稳定关系存在 ,以此为基础来设计组织计算机团队工作具有重要意义     

Effects of hazard exposure and roadway complexity on young and older driver situation awareness and performance

Few previous studies of driver situation awareness (SA) have focused on behavior in hazard negotiation. The objective of this research was to assess the effect of hazard exposure on driver SA and interactions with age and roadway complexity. Ten young (18–25 yrs) and ten older (65–81 yrs) participants drove in a simulator under two levels of environment complexity (simple – rural vs. complex – city) with two types of hazard exposure (static vs. dynamic). Situation awareness was measured using real-time probes posed by a confederate passenger. Driving performance was assessed in terms of lane maintenance and speed control. Results revealed hazards to cause degradations in high level of driver SA and speed control or to trigger adaptation, and vulnerability to hazard type was dependent on driver age. Older drivers exhibited greater speed reduction in response to dynamic hazards; whereas, young driver maintained higher speed, as compared to normal driving, when confronted with static hazards. In addition, increased roadway environment complexity compounded decrements in performance caused by hazard exposure. These findings are applicable to modeling driver behavior and SA under hazardous conditions and may support the design of new in-vehicle assistive technologies for hazard avoidance.     

Responses toward a trapped animal by wild bonobos at Wamba

Chimpanzees and bonobos are the closest living relatives of humans and diverged relatively recently in their phylogenetic history. However, a number of reports have suggested behavioral discrepancies between the two Pan species, such as more cooperative and tolerant social interaction and poorer tool-using repertoires in bonobos. Concerning hunting behavior and meat consumption, recent studies from the field have confirmed both behaviors not only in chimpanzees but also in bonobos. The present study reports an encounter by wild bonobos at Wamba with a duiker trapped in a snare. Bonobos interacted with the live duiker for about 10 min but did not eventually kill the animal. They showed fear responses when the duiker moved and exhibited behaviors related to anxiety and stress such as branch-drag displays and self-scratching. Although bonobos manipulated nearby saplings and parts of the snare, they did not use detached objects to make indirect contact with the duiker. Juveniles and adults of both sexes engaged in active interactions with the trapped duiker. Overall, bonobos’ behavioral responses indicated species-specific cognitive characteristics largely different from those of chimpanzees.     

品牌名称暗示性对消费者决策选择的影响：认知需要和专业化水平的调节作用

品牌管理者最首要的决策就是选择一个好记的或有意义的品牌名字。由于任何特征的品牌名字都必须借助消费者的认知差异来实现真正的差异化, 因此, 从消费者认知特点出发研究暗示性品牌名字就显得尤为重要和有意义。本文通过3个实验, 分别验证了消费者认知需要和专业化水平对品牌名称暗示性与决策选择的调节作用。方差分析发现：低专业化水平的消费者更倾向于根据暗示性的品牌名字做出决策, 而高专业化水平的消费者则不受品牌名称暗示程度的影响。此外, 低认知需要的消费者比较喜欢暗示性的品牌名字, 而对于高认知需要的消费者来说, 品牌名字的暗示性程度不会对其决策过程产生影响。最后, 研究结果揭示了专业化水平和认知需要对暗示性品牌名字效果发挥具有交互作用。对于具有高专业化水平的消费者来说, 无论他们处于低认知需要还是高认知需要, 品牌名字的暗示程度都不会影响他们的态度形成。相反地,对于具有低专业化水平的消费者来说, 无论是低认知需要还是高认知需要均倾向于暗示性的品牌名字。而对于专业化程度中等的消费者而言, 暗示性品牌名字效用的发挥则取决于其处理信息的动机—认知需要水平。     

Perceived Parental Monitoring and Online Deviant Behavior Among Chinese Adolescents: a Moderated Mediation Model

Previous studies uncovered that perceived parental monitoring, personality, and self-control were three important external and internal factors that influenced adolescents’ online deviant behaviors. However, as the dark side of personality, the Dark triad, which implies a disagreeable disposition, lack of humility, belief of being able to predict future outcomes and an opportunistic life strategy, has rarely been used to explore its relationship with online deviant behaviors. Based on problem behavior theory, general aggression model, and models of risk factors and protective factors on problem/deviant behaviors, the current study investigated the relationship among perceived parental monitoring, the Dark Triad, and self-control on online deviant behaviors. A total of 1921 middle and high school students (aged 11–18 years) from China reported their online deviant behaviors (cyberbullying behavior, Internet rumors, deception on the Internet, and cyber obscenity/pornography), perceived parental monitoring, and the Dark Triad as well as the self-control level of individuals. The results of the Pearson correlation showed there were significant correlations among perceived parental monitoring, the Dark Triad, and self-control on online deviant behaviors. The results of the structural equation model (SEM) indicated that the Dark Triad partially mediated the relationship between perceived parental monitoring and online deviant behaviors. Self-control moderated the mediation effect of the Dark Triad. Specifically, self-control weakened the positive relationship between the Dark Triad and online deviant behaviors, and increased the negative relationship between perceived parental monitoring and online deviant behaviors. Our findings expand the applicable environment of the Dark Triad and emphasize its association with online deviant behaviors. Attention should be paid to the interaction of internal traits (e.g., personality and self-control) and explicit family environment (e.g., perceived parental monitoring) in online deviant behavior interventions.

     

The effects of cognitive load and encoding modality on prospective memory

Cognitive Processing - Successful execution of an intention as planned is necessary for people's normal life. However, people sometimes even forget intentions that they consider as...     

Degree of extraversion and physiological responses to physical pain and sadness

Extraversion is a personality frequently discussed as one of the strongest and most consistent factors that relates to individual subjective wellbeing. The goal of this study was to better understand how people with varying degrees of extraversion psychologically and physiologically respond differently to unpleasant circumstances. Emotional responses (e.g., levels of intensity, valence, and arousal) were assessed in determining the sensitivity level to negative stimuli that were specifically designed to provoke physical pain and sadness emotion. Physiological changes (e.g., heart rate (HR), blood volume pulse (BVP), and respiratory sinus arrhythmia (RSA)) were also measured during pain and sadness to observe sympathetic and parasympathetic activities. Our results showed that the degree of extraversion was associated with less unpleasant responses to sadness, less HR responses to both pain and sadness, and greater RSA responses to sadness. The findings suggest that the lower HR reactivity to painful and sad situations and greater RSA reactivity to sad situations in extraversion could be possibly due to increased parasympathetic activity. Additionally, enhanced parasympathetic activity to negative situations may explain an important mechanism underlying the positive connection between extraversion and subjective wellbeing.     

对2010AHACPR-ECC指南及相关问题的思考

心肺复苏是院前急救人员的必备技能,是挽救猝死等危急重症患者生命的首要方法。2010美国心脏协会心肺复苏及心血管急救（AHA CPR-ECC）指南发表至今3年有余,广大院前急救人员仍然存在诸多问题和困惑,猝死的复苏成功率也无明显提高,针对这些问题和困惑,笔者提出了相应的看法和建议,包括（1）该不该删去“听、看、感”;（2）判断循环是否应该结合具体情况;（3）施救者位置与体位是否应该标准化;（4）打开气道时施救者手型与位置是否应该标准化;（5）心脏按压频率如何把握;（6）是否应该掐压人中穴;（7）如何提高复苏成功率;（8）心脏按压板的应用问题;（9）医学院校教科书应当与时俱进。研究并解决好以上问题,对我国院前急救实践或有裨益。     

视觉工作记忆对注意选择的自动导向作用

对Downing(2000)的实验范式加以改进使得实验设计完全符合检验记忆驱动注意捕获所需要满足的标准,实验一采用要求被试在工作记忆保持阶段完成探测区分任务的双任务范式,结果发现被试对呈现在匹配物体空间位置上的探测项反应时显著快于对呈现在非匹配物体空间位置上的探测项反应时,而在实验二中当对被试没有记忆要求时却没有发现这种空间位置一致的优势效应,说明视觉工作记忆内容对选择性注意产生了自动导向作用。