视觉表象生成系统及其影响因素

视觉表象是在记忆基础上产生的类似知觉的信息表征, 也是人们在日常生活中不可或缺的心理活动之一。本综述介绍了该领域中比较有影响力的表象计算理论模型, 并进一步归纳了视觉表象生成系统的成分及其对应的神经基础。分析结果强调了初级视觉皮层作为“视觉缓冲器”是生成表象的主要机能结构, 以“视觉缓冲器”为基础的表象生成系统的机能受多重因素影响。本综述有助于对视觉表象生成系统形成全面的认识, 促进视觉表象实质的进一步研究。     

基督徒祷告过程中人神依恋关系的质性探索

采用质性研究方法探索基督徒祷告过程中人神依恋关系的形成与发展。研究者以“局外人”身份, 采用逐步暴露方式进入研究现场开展客位研究。运用强度抽样方式和综合式抽样策略, 抽取14名(男女各7名)正式受洗(受洗时间从2年到32年不等)的基督徒作为样本, 通过深度访谈收集资料; 运用扎根理论对收集到的资料依次进行初步分析、类属分析和理论建构; 运用参与者检验法、非参与者检验法对研究结果进行效度检验。研究得出以下结论：祷告是基督徒以“信靠”作为承诺, 向上帝袒露心迹, 提出心理诉求, 进而与上帝建立亲密关系的沟通方式和重要渠道, 它提供了人神依恋系统被激活的情境。“信靠”是基督徒通过祷告与上帝之间形成和发展人神依恋关系的前提条件和关键因素; 人神亲密度的增加又反过来促进人对于神的信靠程度。现实生活的困难为基督徒祷告提供了刺激源, 并推动人神依恋关系不断向前发展。基督徒的祷告经历了三个阶段, 由Ⅰ期向Ⅲ期水平渐次提升, 最终形成“以上帝为中心”的困难应对图式。在此过程中, 随着“上帝”的观念越来越深地植入基督徒的自我, 有关“上帝”的心理表征不断得到强化, 相反, 有关“自我”的心理表征渐次弱化, 最终进入某种“无我”的状态。     

诱发的积极情绪会促进多媒体学习吗?

近来, 教育心理学领域开始关注情绪因素对多媒体学习的影响, 其中诱发情绪逐渐成为研究者关注的指导设计形式。已有研究主要通过外部情绪诱发和内部情绪设计来考察诱发的积极情绪在学习过程中的作用, 并发现外部情绪诱发和内部情绪设计能够成功诱发积极情绪, 但由于情绪诱发方式的多样性和多媒体学习过程的复杂性, 诱发的积极情绪对学习效果的促进作用比较微弱。综述发现, 7项涉及外部情绪诱发的实验在学习结果上产生的效应量中值分别为d_保持 = -0.25, d_理解 = 0.04, d_迁移 = 0.30; 14项涉及内部情绪设计的实验在学习结果上产生的效应量中值分别为d_保持 = 0.27, d_理解 = 0.36, d_迁移 = 0.29。诱发的情绪对学习过程的主观体验影响很小。多媒体学习认知情感理论认为诱发的积极情绪会通过动机的中介作用进而促进学习; 相反, 认知负荷理论认为诱发的积极情绪会增加学习者的外在认知负荷从而阻碍学习。未来研究仍需关注情绪的操纵方法、效果评定以及潜在调节变量的作用等。     

Bridging the Gap between Theory and Policy

Two decades ago, Alexander George observed a growing gap between academic theorists and practitioners in the formulation of foreign policy. The significance of the gap has been debated, but trends in the academy, society, and government suggest it is likely to grow.     

Reflections on the deBroglie–Bohm Quantum Potential

The deBroglie–Bohm quantum potential is the potential energy function of the wave field. The quantum potential facilitates the transference of energy from wave field to particle and back again which accounts for energy conservation in isolated quantum systems. Factors affecting energy exchanges and the form of the quantum potential are discussed together with the related issues of the absence of a source term for the wave field and the lack of a classical back reaction.     

Getting Vygotskian about theory of mind: Mediation,dialogue, and the development of social understanding

The ideas of Vygotsky [Vygotsky, L. S. (1987). Thinking and speech. In The collected works of L. S. Vygotsky, (Vol. 1). New York: Plenum. (Original work published 1934.)] have been increasingly influential in accounting for social–environmental influences on the development of social understanding (SU). In the first part of this article, I examine how Vygotskian ideas have to date been recruited to explanations of the development of SU. Next, I present a model of SU development which draws on two implications of Vygotsky’s ideas: the importance of semiotic mediation for mental functioning, and the dialogic nature of the higher mental functions. I then consider the value of the proposed model in accounting for evidence from three areas of enquiry: the typical development of SU in infancy and early childhood, relations between individual differences in SU and social–environmental variables, and atypical development. The model is suggested to be particularly helpful in understanding the transition from intentional-agent to mental-agent understanding, and the role of language in SU. Remaining challenges include a need to specify further the cognitive processes underlying internalization, and to gather more extensive evidence on the roles of typical and atypical social experience in SU development.     

Self-objectification and Well-being: The Impact of Self-objectification on Women’s Overall Sense of Self-worth and Life Satisfaction

Research on objectification theory (Fredrickson and Roberts in Psychology of Women Quarterly 21:173–206, 1997) has demonstrated relations among self-objectification, body shame, and negative health outcomes. Less research has focused on the relation of self-objectification to indicators of well-being. We examined associations among self-objectification, body shame, and two indicators of well-being (i.e., self-esteem and satisfaction with life) in a path analytic model. We also tested explicitly whether body shame mediated the relation between self-objectification and self-esteem and whether self-esteem mediated the relation between body shame and life satisfaction. Female undergraduates (N = 227) from the United States completed questionnaires assessing the constructs of interest. Results indicated that the proposed model fit the data and that body shame and self-esteem mediated as predicted. Implications of these findings are discussed.     

The effect of comparative context upon stereotype content: children's judgments of ingroup behavior

This study addresses self-categorization theory's contention that stereotype content varies as a function of the comparative context within which a given group is considered. A sample of 5-, 7- and 10-year-old children (n = 192) made judgments about gender ingroup behavior in one of two comparative contexts: either adults of the same sex as self or children of the opposite sex. Specifically, judgments were either of the perceived stereotypicality or central tendency of 12 types of behavior. Both types of judgment were found to differ as a function of comparative context in ways predicted by self-categorization theory. However, contrary to prediction, there was no effect of age on the extent of stereotype variability.     

Towards a “Sophisticated” Model of Belief Dynamics. Part I: The General Framework

It is well-known that classical models of belief are not realistic representations of human doxastic capacity; equally, models of actions involving beliefs, such as decisions based on beliefs, or changes of beliefs, suffer from a similar inaccuracies. In this paper, a general framework is presented which permits a more realistic modelling both of instantaneous states of belief, and of the operations involving them. This framework is motivated by some of the inadequacies of existing models, which it overcomes, whilst retaining technical rigour in so far as it relies on known, natural logical and mathematical notions. The companion paper (Towards a “sophisticated” model of belief dynamics. Part II) contains an application of this framework to the particular case of belief revision. Presented by Hannes Leitgeb