共情对亲社会行为的影响及神经基础

亲社会行为是指那些使他人获益的行为,这类行为具有重要的进化意义和现实意义。作为影响亲社会行为的重要因素,共情在认知神经科学领域得到了广泛研究。脑岛等脑区的激活与消极情绪体验有关,是情绪共情的神经基础,利于产生亲社会行为动机;颞顶联合区等脑区参与对他人意图的理解,是认知共情的神经基础,利于个体选择有效方式帮助别人。女性在共情时激活额下回等与情绪有关的脑区,而男性在共情时激活颞顶联合区等与认知有关的脑区,这为男女个体在亲社会行为表现上的差异提供了新证据。未来研究应完善与亲社会行为有关的脑区功能的解释,综合多种影响因素,结合病理学研究考察共情对亲社会行为的影响及神经基础。     

脑干诱发电位在言语感知研究中的应用

脑干诱发电位是一种考察听觉脑干加工声音信号时神经活动的非侵入性技术, 近年来被广泛用于探索言语感知的神经基础。相关研究主要集中在考察成年人和正常发展儿童语音编码时脑干的活动特征及发展模式, 探讨发展性阅读障碍及其他语言损伤的语音编码缺陷及其神经表现等方面。在已有研究的基础上进一步探索初级语音编码和高级言语加工之间的相互作用机制, 考察阅读障碍的底层神经基础将成为未来该技术在言语感知研究中应用的重点。     

个体攻击性对愤怒表情类别知觉的影响

探讨了个体攻击性对愤怒表情加工中反应偏向和敏感性的影响。使用愤怒、恐惧原型生成表情连续体作为实验材料, 采用类别知觉实验范式考察了高、低攻击个体识别和辨别愤怒-恐惧连续体的类别转折点和斜率。结果发现, 与低攻击个体相比, 高攻击个体识别愤怒-恐惧连续体类别界线处的曲线斜率更大; 高攻击个体具有类别界线向恐惧一端偏移的倾向, 但并没有达到统计显著。这表明, 高攻击个体不存在敌意归因偏向, 而是对愤怒和恐惧表情的转变具有更高的敏感性。     

Establishing derived categorical responding in children with disabilities using the PEAK‐E curriculum

The purpose of the study was to evaluate a procedure to generate derived categorical responding by three children with disabilities and to promote the emergence of untrained intraverbal categorical responses. In the study, three 4‐member equivalence classes including three stimuli (A, B, and C) and a category name (D) for each class were trained using a match‐to‐sample procedure. Test probes were conducted for categorical responding, including both a trained (D‐A) and two derived (D‐B, D‐C) relational responses, as well as the emergence of untrained intraverbal categorical responding (D‐A/B/C) throughout the study. Relational training was effective at promoting the emergence of categorical responding, and two of the three participants demonstrated the emergence of additional intraverbal responding without prior training. The results provide further evidence supporting the practical utility of stimulus equivalence as well as the PEAK‐E curriculum.     

类别变量的中介效应分析

在心理学和其他社科研究领域,研究者能熟练地进行连续变量的中介效应分析,但面对自变量、中介变量或(和)因变量为类别变量的中介效应分析,研究者往往束手无策。在阐述类别自变量中介分析方法的基础上,我们建议使用整体和相对中介相结合的类别自变量中介分析方法,并给出了分析流程。以二分因变量为例,讨论了中介变量或(和)因变量为类别变量的中介分析方法的发展过程(即尺度统一的过程),建议通过检验Za×Zb的显著性来判断中介效应的显著性。用二个实际例子演示如何进行类别变量的中介效应分析。最后展望了类别变量的中介效应分析研究的拓展方向。     

代孕技术的伦理与法律思考

简要介绍了代孕的概念,指出了在我国有条件开放代孕的合理性。从家庭关系、子宫工具化和婴儿商业化三个方面给出了代孕合理性的伦理依据。从合同法、身体权、生育权三个方面给出了法律的解读。从伦理与法律两方面对我国有条件的开放代孕加以论述,并提出相应对策及理论支持。     

试析美国反恐战争的道德依据

道德因素已经成为影响美国对外政策的一股不可忽略的、恒久的力量。“美国例外”主义、实用主义至上的道德原则和“人道主义”干涉原则是支持美国反恐战争的三大道德支柱。“道德责任”的背后是为了在全球推广美国价值观。     

The effects of categorical similarity and feature-space proximity on visual working memory processing

Two patterns of data predict that similarity has a positive effect and a negative effect on visual working memory (VWM) processing. We assume that these two empirical outcomes do not distinguish categorical similarity from feature-space proximity, resulting in this divergence. To investigate how categorical similarity and feature-space proximity modulate VWM, we tested memory for an array of pictures drawn from either mixed categories or a single category in which feature-space proximity varied along a morph continuum in a change-detection task. We found that memory under the mixed-category condition was better than that under the single-category condition, whereas memory under high feature-space proximity was superior to that under low feature-space proximity. These patterns were unaffected by manipulations of stimulus type (faces or scenes), encoding duration (limited or self-paced), and presentation format (simultaneous or sequential). These results are consistent with our hypotheses that categorical similarity inhibits VWM, whereas feature-space proximity facilitates VWM. We also found that memory for items with low feature-space proximity benefited more from mixed-category encoding than that for items with high feature-space proximity. Memory for faces benefited more from mixed-category encoding than scenes, whereas memory for scenes benefited more from feature-space proximity than faces. These results suggest that centre-surround inhibition organization might underlie similarity effects in VWM. Centre-surround inhibition organization for complex real-world objects could have both categorical level and feature-space level. The feature-space level might differ by category.     

努力控制及其神经基础

本文对努力控制的概念、发展及其神经基础进行了归纳和总结。我们发现努力控制涉及的脑区主要包括背外侧和腹外侧前额叶,前扣带回,顶上和顶下小叶以及辅助运动皮层等。此外,通过分析对比后发现努力控制与执行功能之间在行为表现和神经基础上有密切关系：两者都与个体的学业成绩、情绪状态和攻击行为等有关;努力控制涉及的脑区有很大部分处于具有执行功能的突显网络和额顶控制网络。这些证据表明两者之间可能有共同的脑结构基础。