父母冲突对青少年社交焦虑的影响：序列中介效应分析

采用父母冲突儿童知觉量表(CPIC)、父母关系安全感量表(SIS Scale)和社交焦虑分量表调查480名高中生,运用偏差矫正的百分位Bootstrap方法探索青少年对父母冲突的威胁知觉和情绪不安全感在父母冲突水平与青少年社交焦虑之间的序列中介作用。本研究同时检验认知情境理论和情绪安全感理论,发现青少年对父母冲突的威胁知觉对其情绪不安全感的不同维度存在不同影响,从而更为完善地揭示父母冲突影响青少年社交焦虑的内部机制。具体来说,父母冲突主要通过三条途径影响青少年社交焦虑:通过威胁知觉的中介作用;通过情绪不安全感,特别是消极表征的中介作用;通过依次影响威胁知觉和情绪不安全感(特别是消极表征和情绪失调)而正向预测青少年社交焦虑。     

Stimulated release of tissue plasminogen activator from artery wall sympathetic nerves: implications for stress-associated wall damage

Recurrent stress is clinically associated with early onset hypertension and coronary artery disease. A mechanism linking emotion to pathogenic remodeling of the artery wall has not been identified. Stress stimulates acute regulated release of tissue plasminogen activator (t-PA) into the circulation, which is presently attributed to the vascular endothelium. Sympathetic neurons also synthesize t-PA and axonally transport it to the arterial smooth muscle. Unlike release by the endothelium, a stress-stimulated sympathetic discharge would potentially accelerate degradation of the wall matrix by plasmin. To assess whether sympathetic axons are the principal source of acute stress-induced arterial release of t-PA, we compared the output from small densely innervated and large sparsely innervated isolated artery segments before and after sympathetic stimulation, and after ablations. Following phenylephrine infusion densely-innervated microvessels in uveal eyecups were released over 60-fold greater amounts of active t-PA per milligram than the sparsely innervated aorta; and ten-fold more than carotid artery segments. Mesenteric artery release was 4.8-fold greater than release by the carotid artery. In vivo, uveal release of t-PA increased more than three-fold within one minute following superior cervical sympathetic ganglion electrical stimulation, and after phenylephrine, or nicotine infusions of the anterior chamber. Circulating levels of t-PA fell 70% following chemical sympathectomy. We propose that sympathetic nerves are the primary source of stress-induced release of t-PA into and from the densely innervated resistance arteries and arterioles, where dysregulated plasmin-induced proteolysis could damage the wall matrix.     

The mediating role of self-efficacy in the development of entrepreneurial intentions

The purpose of this study was to investigate the mediating role of self-efficacy in the development of students' intentions to become entrepreneurs. The authors used structural equation modeling with a sample of 265 master of business administration students across 5 universities to test their hypotheses. The results showed that the effects of perceived learning from entrepreneurship-related courses, previous entrepreneurial experience, and risk propensity on entrepreneurial intentions were fully mediated by entrepreneurial self-efficacy. Contrary to expectations, gender was not mediated by self-efficacy but had a direct effect such that women reported lower entrepreneurial career intentions. The authors discuss practical implications and directions for future research.     

表演式学习──表演理论对“最近发展区”的发展

美国当代心理学家、剧作家、表演理论的创始人弗雷德·纽曼（FredNewman）及其同事致力于在实践中发展维果茨基的理论,从表演的维度探讨了zpd的概念,并以此为核心提出了表演式学习的概念,以区别于在当今社会大行其道的工具性学习,即以获取知识和技能为目的的学习。表演理论通过对工具性学习的消极影响的批判及对表演式学习的倡导,在人的教育和发展方面提出了独到见解。     

网络主体的道德意识培养

为了保证网络社会的健康运行 ,网络道德建设已成为无法回避重要的课题。在网络道德建设中 ,我们必须注重培养网络主体的道德意识 ;在培养网络道德意识的过程中 ,我们既要坚持对网络主体的道德灌输、提高其道德认识能力 ,又要锻炼其道德意志并加强道德修养。     

基于用户动态信息加工的信息流广告回避机制与重定向策略

信息流广告飞速发展的同时用户广告回避愈发普遍,然而传统广告回避结论无法平移到该情境。本研究基于用户动态的信息加工视角,试图探讨(1)动态信息加工状态下(收敛式vs发散式)产生广告屏蔽和广告跳过行为的内在机制;(2)采用归因引导重定向策略,挖掘用户屏蔽广告的“残留效应”所带来的信号价值;(3)采用广告凸显重定向策略,突破用户跳过广告的“学习效应”造成的负面影响。丰富现有理论的同时,为信息流广告的响应式优化提供理论和决策支持。     

视频游戏虚拟化身对自我概念的影响

虚拟化身(virtual avatar)是玩家在视频游戏中的虚拟自我呈现方式, 通过操控虚拟化身, 玩家可扮演不同的角色, 并拥有新的身份。作为现实自我的投射和展示, 虚拟化身会影响个体的自我认同, 并带来自我的变化。近年来, 越来越多的研究开始关注虚拟化身对个体自我的影响。大量研究表明, 在视频游戏中操纵虚拟化身进行行为和身份模拟会影响个体的自我概念。相关理论从不同视角解释了虚拟化身影响自我概念的原因。另外, 已有研究表明虚拟化身与自我概念的关系受到化身线索、视频游戏特征及个体因素的影响; 自我临场感和化身认同是虚拟化身影响自我概念的内在心理机制。未来研究应关注虚拟化身对自我概念的深层次影响和长期影响, 化身形象和行为两种线索的交互影响, 以及虚拟化身带来的自我概念改变对现实行为的影响, 并加强该领域的应用研究。     

时间的多维度空间表征:分离的起源与激活机制

近期研究发现时间可以分别在三个空间维度(左右、前后和上下)进行表征, 但不同维度心理时间线的起源和激活机制尚存争议。最新证据表明, 左右维度时间线主要起源于阅读/书写习惯所伴随的感觉运动经验, 其激活可能是一种低水平的感觉运动机制; 前后和上下维度时间线主要起源于语言中的空间隐喻, 其激活可能是一种高水平的语义机制。未来研究应更关注心理时间线的起源多样性、先天基础、神经机制以及时间线和数字线的类比。     

Different roles of shared and vertical leadership in promoting team creativity: Cultivating and synthesizing team members’ individual creativity

Drawing on the componential model of creativity (Amabile), we examined how shared leadership and a formally appointed leader's transformational leadership jointly cultivate team creativity in two studies. We conducted an experiment with a sample of 109 undergraduate students (32 teams) enrolled in a business plan competition (Study 1) and a field survey based on multisource, time-lagged data collected from 251 full-time employees working on 64 research and development teams (Study 2). The results from both studies revealed that shared leadership enhanced team members’ individual creative self-efficacy and individual creativity, which in turn improved team creativity. Moreover, the results from Study 2 showed that a formally appointed leader's use of different transformational leadership behaviors had different impacts on individual and team creativity. Individual-focused transformational leadership strengthened the positive effect of shared leadership on team members’ average individual creativity, whereas group-focused transformational leadership facilitated the translation of teams with high average individual creativity into teams with high levels of team creativity. The theoretical and practical implications of the findings are discussed.     

面部表情与捐赠者–受益者关系对网络慈善众筹捐赠行为的影响

网络慈善众筹是从在线社区获得财力捐助的行为。本研究通过3个实验,考察在线社交平台上受益者面部表情与捐赠者–受益者关系对慈善众筹捐赠行为的影响。结果发现,快乐的面部表情对捐赠金额和分享意愿的影响总体上比悲伤更大;捐赠者–受益者共有的熟人关系比陌生人关系对捐赠金额与分享意愿的影响更大;面部表情与捐赠者–受益者关系对慈善众筹的捐赠金额存在交互作用,但对分享意愿没有显著性影响。结果表明,在线社交平台的慈善众筹捐赠行为更偏好有快乐面部表情的受益者,并且更多地受到间接的、社会交换预期微弱的熟人共有关系的影响。