参考选择影响情绪加工相关的ERPs

研究采用情绪图片观看任务,考察双耳乳突参考、全脑平均参考和参考电极标准化技术（Reference electrode standardization technique, REST）对情绪相关ERP成分在波幅、统计功效、内部一致性方面的影响,以及参考选择对ERP伪迹剔除率的影响。结果显示,双耳乳突参考下颞区EPN的波幅显著小于REST和全脑平均参考下的结果,而在顶区LPP上表现出完全相反的结果。此外,双耳乳突和全脑平均参考下更可能检测到P2上负性和中性图片波幅间的差异,而REST和全脑平均参考下更可能检测到EPN的“正性偏向”效应。未来研究应结合以往文献和特定成分谨慎选择参考类型。     

The act of rejecting reduces the desire to reconnect: Evidence for a cognitive dissonance account

Through three experiments we examined whether the act of rejecting reduces the desire to reconnect with others. In Experiment 1, female participants who had just rejected a job applicant were less motivated to make new friends than the controls. In Experiment 2, female participants who had insufficient justifications to reject a paper were more reluctant to work with others than those who had sufficient justifications to reject. In Experiment 3, high-choice female participants showed more reduction in reconnecting desire than low-choice female participants. Furthermore, female participants who could misattribute their discomfort away showed less reduction in reconnecting desire. However, in all three experiments, male participants showed less reduction in reconnection desire than females. A follow-up survey showed that males and females differed in their senses of social connectedness and their different discomfort level at rejecting others. Overall, results supported the cognitive dissonance account which posits that, because the act of rejecting is in conflict with the fundamental motive to affiliate, such conflict may compel the mind to modify the existing attitude. Thus rejecting reduces the desire to forge new social connections.     

CysC在肾移植后急性排斥反应诊断中的价值

探讨CysC在肾移植术后诊断急性排斥反应中的价值。63例肾移植患者分为肾功能稳定组（49例）和排斥组（14例）,选10例单纯感染患者为对照组,检测CysC值,并与正常对照组（60例）比较。术后监测稳定组和排斥组CysC、BUN、SCr及CCr,对排斥组排斥前后CysC浓度变化以及CysC与SCr、CCr关系进行分析。结果为排斥组排斥前与排斥时CysC浓度差异有统计学意义（P〈0.01）;CCr在稳定组和排斥组与SCr、CysC均呈直线相关;感染组CysC与正常对照组差异无统计学意义（P〉0.05）。说明CysC可以用于肾移植术后急性排斥反应的早期诊断及与单纯感染鉴别诊断。     

拒绝敏感性的影响因素——基于“个人×环境模型”

拒绝敏感性指个体对拒绝信息存在焦虑预期,易于知觉并倾向于产生过度反应的程度。以往研究大多关注拒绝敏感性的认知及神经机制,缺少以社会性发展的视角探讨拒绝敏感性影响因素的证据。本文根据“个体×环境模型”,发现性别、外貌特征、人格特质以及早期创伤经历、依恋、专制型教养方式、同伴欺负与友谊及文化差异均可以影响个体拒绝敏感性的水平,且它们之间还存在一定的交互作用。同时,本文对未来研究方向提出了展望。     

大学生自我概念清晰性与社交焦虑的关系：多重中介效应分析

为了考察大学生自我概念清晰性对社交焦虑的影响,以及拒绝敏感性和无法忍受不确定性的中介作用,采用自我概念清晰性问卷、拒绝敏感性问卷、无法忍受不确定性量表和社交回避及苦恼量表对890名在校大学生进行问卷调查。结果表明：大学生的自我概念清晰性既可以直接负向预测社交焦虑,也可以通过拒绝敏感性、无法忍受不确定性以及二者的链式中介影响社交焦虑,但链式中介作用较弱。因此,大学生的自我概念清晰性是通过降低其拒绝敏感性和无法忍受不确定性,进而缓解大学生的社交焦虑。     

视觉搜索中注意模板促进搜索的内在机制

生物的视觉搜索能力对适应外部复杂环境具有非常重要的生存意义。注意模板可以在搜索任务的过程中增强相关信息和抑制无关信息,从而快速找到目标。总结近期研究结果主要有以下发现：在建立注意模板的过程中并不能明确是基于语义信息还是视觉特征信息;注意模板不仅可以存储在工作记忆中,也可以存储在长时记忆中;不同类型注意模板的神经机制存在差异。未来的研究应关注注意模板在建立过程中内部信息如何传递,并关注不同人群注意模板的神经机制,以及解决拒绝模板抑制机制的理论争议。     

Moderators of the association between relational aggression and perceived popularity

This study, which involved two waves of measurement over a period of 12 months, examined first whether the positive association between relational aggression and two types of high status was moderated by social self-efficacy, leadership, cooperation, and peer sociability. It was expected that relational aggressors are most likely to gain high peer group status when they are also self-efficacious or prosocial. Second, this study examined the reciprocal association between relational aggression and high peer status. It was anticipated that relational aggression would contribute to higher perceived popularity and vice versa. Third, we also examined and hypothesized reciprocal effects between social self-efficacy, leadership, cooperation, and peer sociability and perceived popularity. Youth were 540 13-15 year olds participating in Grade 7 (Time 1) and again 1 year later in Grade 8 (Time 2). Data were collected from peers, teachers, and the adolescents themselves. Consistent with expectations, relationally aggressive adolescents high in social self-efficacy, leadership, cooperation, and peer sociability were higher in status than relationally aggressive individuals with low levels of these characteristics. In addition, relational aggression and perceived popularity reciprocally influenced each other. Finally, social self-efficacy, leadership, cooperation, and peer sociability reciprocally influenced and were influenced by perceived popularity.     

童年晚期同伴关系不利与儿童的攻击行为:自我概念与同伴信念的中介作用

采用整群抽样法选取1806名小学儿童(平均年龄11.27±0.36岁)为被试,考察同伴拒绝、侵害两种同伴关系不利与儿童攻击行为间的关系、以及儿童的自我概念与同伴信念在其中的中介作用.结果发现,(1)同伴拒绝、侵害与儿童的身体攻击、关系攻击显著正相关,与儿童的自我概念、同伴信念显著负相关,自我概念、同伴信念与两类攻击显著相关.(2)同伴拒绝、关系侵害对身体攻击和关系攻击具有正向预测作用;身体侵害仅对身体攻击具有正向预测作用,对关系攻击无显著影响.(3)儿童的身体自我概念、社交自我概念及同伴信念在同伴拒绝、同伴侵害与攻击的联系中具有中介作用.本研究结果表明,同伴拒绝对儿童的身体攻击、关系攻击主要表现为直接效应,不同类型的侵害经历与儿童攻击间的联系存在类型特定性.