信任的认知神经网络模型

信任是指一方在基于对另一方行为期望的基础上愿意冒一定的风险, 以期在将来得到积极结果的心理过程。近年, 认知神经取向的研究对信任行为引起的特定脑区激活进行了考察, 却忽略了大规模脑网络在信任过程中的整体作用。在总结前人研究的基础上提出信任的认知神经网络模型, 并从认知神经网络视角对信任行为进行解释和整合。在模型中, 信任行为是动力系统、情感系统和认知系统相互作用的结果, 并分别与奖励网络、显著网络、中央执行网络和默认网络等神经网络激活有关。此外, 模型还强调信任行为的反馈机制, 以此构成完整的建构模型。模型阐明了心理系统与中枢神经网络之间的对应关系, 从认知神经角度解释了信任行为发生的心理机制和神经基础。     

情绪对不同外倾水平个体行为抑制的影响

采用双选择oddball实验范式与事件相关电位（ERP）技术,探讨了情绪对行为抑制的影响以及外倾性的调节作用。行为数据发现,相比标准刺激,被试对偏差刺激的反应时显著更慢,证明实验成功诱发了行为抑制效应。在内倾组,负性刺激下偏差与标准刺激反应时差值显著长于正性刺激条件,而在外倾组无显著差异。脑电数据发现,在N2成分上,内倾组在正性情绪下的波幅显著小于负性和中性情绪,而在外倾组,不同情绪下的波幅不存在显著差异。在P3成分上,内倾组在正性情绪下的波幅显著大于负性和中性情绪,相反,外倾组在负性情绪下的波幅显著大于正性和中性情绪。结果表明,情绪对行为抑制的影响受到了个体外倾性水平的调节。     

A Primer on Psychotherapy Process Research: A Review of Cognitive Therapy of Depression

Researchers conducting psychotherapy process research aim to understand the process by which efficacious psychotherapies achieve therapeutic benefits. A key challenge in this research is how to maximise what can be learned from naturalistic longitudinal data. We provide a selective overview of research examining the process of change in cognitive therapy of depression. While the efficacy of this treatment is widely recognised, a consensus regarding how the treatment reduces depressive symptoms and provides protection from relapse and recurrence has yet to be reached. We review the current state of the research addressing the process of change in cognitive therapy, highlighting how specific methodological features can be used to better understand the process by which this treatment achieves its effects. We highlight the importance of two key challenges to making causal inferences from a process–outcome relation: (a) establishing the temporal precedence of predictors to outcome variables, and (b) evaluating whether any relations identified could be spurious. We argue that methodologically rigorous studies tend to support key claims of the model underlying cognitive therapy of depression. We conclude by considering future directions. For example, we highlight the importance of efforts to understand patient characteristics that may moderate process–outcome relations and could ultimately prove useful in tailoring treatment to best suit individual patients.     

共情的毕生发展:一个双过程的视角

共情中包含情绪和认知两种加工过程,二者有着不同的发展轨迹和机制。其中情绪共情是一种与生俱来的能力,从婴儿期直到成年期呈现下降趋势,到老年阶段有所上升,呈现出U形发展轨迹。其发展可能是由于镜像神经元储存的共享表征日益丰富和精细。认知共情发展相对较晚,从出生直到成年期呈现上升趋势,在老年阶段逐渐下降,呈现倒U形的发展轨迹。其发展是随着颞顶联合区和前额叶皮层成熟、个体区分自我他人和抑制自我中心能力增强而逐渐发展的。只有分别考察两个成分的发展才能了解共情发展的本质和机制。     

Children's supernatural thinking as a signalling behaviour in early childhood

In this study, we analysed the reaction times of 137 college students when making decisions on pairs of hypothetical children verbalizing different types of vignettes and/or exhibiting different physical appearance (photographs of faces). Vignettes depicted immature and mature versions of both supernatural (e.g., ‘The sun's not out today because it's mad’ vs. ‘The sun's not out today because the clouds are blocking it’) and natural (‘I can remember all 20 cards!’ vs. ‘I can remember 6 or 7 cards’) explanations to ordinary phenomena. Photographs of children's faces were morphed with a physical appearance of approximately 4–7 years old or approximately 8–10 years old. In earlier research, immature supernatural thinking produced positive‐affect reactions from adults and older adolescents (14–18 years old) towards young children, with cognitive cues being more important than physical‐appearance cues in influencing adults’ judgements. Reaction times to make decisions varied for the Supernatural and Natural vignettes and for the immature and mature vignettes/faces, reflecting the differential cognitive effort adults used for making decisions about aspects of children's physical appearance and verbal expressions. The findings were interpreted in terms of the critical role that young children's immature supernatural thinking has on adults’ perception, analogous to the evolved role of immature physical features on adults’ perception of infants.     

男性对女性面孔吸引力的认知偏好: 来自ERP的证据

运用事件相关电位(ERPs)技术, 采用学习-再认实验任务, 探讨了男性对有、无吸引力女性面孔图片进行判断和再认时脑内时程的动态变化。行为数据结果表明, 男性对有吸引力女性面孔的反应时更长, 再认正确率更高。ERP结果发现, 有、无吸引力面孔诱发的ERP早成分和晚成分都存在显著差异, 最强效应出现在大脑皮层的中前部。在判断任务和再认任务中, 有吸引力的女性面孔都比无吸引力的女性面孔诱发出更大的ERP成分(分别为N300、P350~550ms和P160、N300~500ms、P500~700ms)。结果表明, 男性对有吸引力的女性面孔的判断和再认存在偏好。     

猜谜作业中顿悟的ERP效应

采用事件相关电位(ERP)探索问题解决过程中顿悟的神经机制。以猜谜作业为实验程序,对“有顿悟”和“无顿悟”答案引发的脑电分别进行叠加和平均,并将二者相减（有顿悟-无顿悟）得到差异波。在250~500 ms “有顿悟”比“无顿悟”的ERP波形有一个更加负性的偏移,在差异波中,这个负成分的潜伏期约为380 ms（N380）。地形图和电流密度图显示,N380在额中央区活动最强。偶极子源定位分析结果显示,N380可能起源于扣带前回。因此,N380可能反映顿悟问题解决过程中思维定势的突破。     

Does P3 Reflect Attentional or Memory Performances,or Cognition more Generally?

The study evaluated the off-line relationship of attention, memory and other cognitive performances with the auditory event-related potentials P3 (P300) and N2. The sample comprised 200 middle-aged construction workers. Verbal, visuomotor and memory tests were administered. Attentional domains were examined using CogniSpeed software. Slowed reaction times in the test of sustained attention (vigilance) were associated with delayed P3 latency (p < 0.001) and decreased P3 amplitude (p = 0.005), as well as with delayed N2 latency (p < 0.001). Visuomotor slowing in Digit Symbol was also related to delayed P3 latency (p = 0.030) and decreased P3 amplitude (p = 0.014). In contrast, mild cognitive impairment, short- and long-term memory, and concentrating or sharing attention with high working memory demands were not related to P3. The results suggest that P3 is linked to attentional performance with low working memory demands rather than to effortful working memory updating, retrieval from memory stores, or mild cognitive impairment.     

社会比较中的认知偏差探析：“优于常人”效应和“差于常人”效应

近几年来,在社会心理学的研究中社会比较中的认知偏差现象越来越多的受到研究者的关注。该文主要介绍了社会比较中的认知偏差现象：“优于常人”效应和“差于常人”效应。并对其理论依据、测量方法以及研究的理论意义分别进行了介绍。最后,在对以往研究回顾的基础上,提出了对今后研究的展望。     

发展的认知神经科学--神经科学与认知发展研究的融合点

本文介绍了发展的神经科学自 2 0世纪 80年代以来在早期突触形成、关键期及丰富环境对脑发育的影响等领域的一些突出成就 ,阐述了从神经科学与认知发展共同研究的主题来考察两个学科的整合的意义 ,并对发展的认知神经科学研究的未来趋势作了展望。