青少年风险决策的发展认知神经机制

随着认知神经科学技术的发展, 青少年风险决策的发展认知神经机制成为了新近的一个热点课题。从双系统理论模型(社会情感神经网络系统、认知控制神经网络系统)出发, 对与青少年风险决策相关的大脑结构、功能的变化进行了阐述, 重点分析了新近的大脑功能连接、脑网络的研究; 阐述了青少年风险决策认知神经机制的主要理论模型：双系统模型和三角模型。未来研究还应加强对认知神经机制理论模型的检验、整合和创新, 从社会认知神经科学的角度深入研究社会参照系统(同伴关系、亚文化等)在青少年风险决策中的作用及机制, 以及从认知神经层面如何预防和干预青少年高风险行为。     

拖延行为的发展认知机制及神经基础

拖延是指尽管预见到拖延会带来不利后果, 人们仍自愿推迟开始或完成某一计划好的任务。研究表明, 不同文化背景下有15%~20%的成年人存在慢性拖延, 超过70%的学生承认自己存在学业拖延, 部分学生还会形成特质性拖延。严重的拖延不仅影响人们的学业、工作和生活, 甚至还会危害到人们的身心健康。鉴于目前对于拖延产生的核心机制、形成的关键期以及发展认知神经机制还不是很清楚, 本项目拟从拖延的时间决策理论出发, 首先系统探明拖延决策的核心机制, 尤其是远期价值评估、延迟折扣和自我控制能力等在拖延决策过程中的认知加工机制和神经基础; 其次结合行为-环境变量-脑的多模态数据, 从发展角度探究拖延形成的关键期(敏感期)、影响因素以及发展认知神经机制; 最后从行为干预和脑的可塑性角度出发, 试图制定各关键年龄阶段拖延预防与干预的临床方案。本研究的开展对于把握拖延形成的认知机制、神经基础及其发展规律具有重要的科学价值, 对于拖延行为的预防和干预也具有直接的现实意义。     

几种成人认知发展理论简介

本文简要概述了近二十年关于成人认知发展的四种观点:第一种观点是从认知论的角度,探讨了个体关于知识的认识变化,认为成人的认知结构具有开放性,其表现形式是辩证运算;第二种观点是从智力与先天、后天因素的关系出发,区分了晶体智力与流体智力发展的不同轨迹,认为晶体智力的发展是持续终生的,且它的根本特征是适应性;第三种观点是以特定领域(即道德认知发展)为例,描述了成人道德认知发展的根本特征,认为成人期个体的认知发展并没有停止;第四种观点是从自我理论出发,强调了个体认知发展变化的实质是自我的发展变化,认为成人期自我发展的最高水平是“自我实现”。     

儿童认知的跨文化研究

一、目的跨文化的心理学作为心理学的一个分支来说是比较新的。虽然在本世纪初就有人从事过这方面的研究,但只是到六十年代从跨文化观点系统地论证心理学的争论才真正为人们所接受。在儿童心理发展理论中,首先接触到的一个带根本性的问题即遗传与环境的关系。关于这个问题,越来越多的心理学家从跨文化的观点加以研究。尽管辩证唯物主义已经指出遗传为心理发展提供了物质前提,环境和教育在儿童心理发展中起着决定作用,但是,环境特别是文化教育在儿童认知发展中如何起作用?民族差异对儿童认知的发展又有什么影响?这些问题都需要作具体的调查和研究。本文从云南实际出发开始对上述问题作初步的探索。     

发展性障碍儿童的脑发育特点及干预

随着发展认知神经科学的兴起, 研究者借助脑成像等技术探讨了发展性障碍儿童的脑结构发育特点, 发展缺陷与脑功能损伤的关系以及障碍干预和脑功能改善的机制等, 这为揭示发展性障碍儿童异常神经机制的共性和特异性, 进而为早期诊断和干预提供了重要的生物学标记。针对儿童期常见的发展性障碍, 从脑结构损伤、脑激活异常、脑网络连接和脑功能康复等方面对相关研究进行了总结, 指出未来研究应拓展角度, 注重揭示各发展性障碍之间异常脑发育特点的共性和特异性的具体表现、病理机制及基因基础等; 临床工作者应注重将脑发育的异常和功能改善用于辅助各类障碍的早期识别和干预效果评估。     

“轨迹法”用于认知心理学研究

六十年代以来,在发展心理学领域中出现了一种新观点——毕生发展观,它把人的一生看作一个整体,毕生发展心理学是以这种观点,研究从胚胎直至老死整个一生的心理发展。近年来,认知训练的研究已成为探讨成年至老年智力或记忆发展的一个活跃领域,表明了认知训练对改善老年人的认知功能具有重要意义,老年人的认知功能具有一定的可塑性。本文概述了一种记忆术——“轨迹法”的由来,它的基本原理与作用,并结合西德马普人类发展与教育研究所的有关工作,例证“轨道法”在认知心理学中的应用。     

执行功能研究方法评述

虽然对执行功能的研究长期以来都是从神经心理学角度出发的,但现在发展心理学领域中也出现了大量的研究,其研究方法也层出不穷。该文从发展心理学角度分析了研究儿童冷执行功能和热执行功能的常用方法,包括搜寻任务、规则运用任务、优势规则抑制任务、矛盾冲突任务、问题解决任务、图片工作记忆任务、心理理论任务、延迟满足任务、儿童博弈任务和反向择物。通过对这些方法的分析,作者发现,执行功能的概念已逐步扩展到包容整个认知过程,而已有的关于执行功能的观点都只强调了其中某一个或几个方面,还没有一种观点能够将上述方法所研究的执行功能概括完整。执行功能的本质还远远不能清晰地展示在我们面前。     

文盲文字加工的行为和脑机制

文盲作为一个特殊的被试群体,对其的研究一直备受关注。文盲研究最初集中在文盲的口语加工和语音意识等方面。其后比较关注文盲字词的语音和语义加工。随着脑成像技术的发展,对文盲的文字加工脑认知机制进行了研究,探讨脑功能组织是如何受到早期学习的调制,左侧梭状回在字词识别中的作用及其文盲脑功能偏侧化问题。以后此类研究应关注文盲字词识别学习过程中的脑功能变化和文化认知对认知老化的影响等科学问题。     

老年人的脑可塑性:来自认知训练的证据

老年人大脑结构和功能衰退是其认知功能下降的重要原因。然而,老年人的大脑仍然保持了一定的可塑性。随着神经影像技术的发展,大量研究发现认知训练能够对老年人的大脑结构和功能产生积极影响:(1)在脑结构方面,表现为大脑皮层灰质体积增加、白质神经纤维连接增强;(2)在进行认知任务时,表现为脑功能网络发生重组;(3)在静息态脑功能方面,表现为脑自发活动功能性重组以及功能连接增强。未来的认知训练研究需要考察老年人大脑可塑性存在个体差异的多种影响因素,并通过纵向追踪研究来探讨大脑可塑性的保持性和迁移效应。     

认知神经科学领域脑电复杂性测度方法的新进展

脑电分析是认知神经科学研究领域重要的研究技术之一。本文主要介绍了新近发展的KC、C1、C2 、C0 、信息传输矩阵和近似熵等基于非线性动力学的脑电复杂性测度分析方法 ,对各种方法的特点进行了简单的讨论 ,并简述了其在分析认知电位时空模式 ,从而揭示脑认知功能研究中的应用。     

Using game theory to examine incentives in influenza vaccination behavior

The social good often depends on the altruistic behavior of specific individuals. For example, epidemiological studies of influenza indicate that elderly individuals, who face the highest mortality risk, are best protected by vaccination of young individuals, who contribute most to disease transmission. To examine the conditions under which young people would get vaccinated to protect elderly people, we conducted a game-theory experiment that mirrored real-world influenza transmission, with "young" players contributing more than "elderly" players to herd immunity. Participants could spend points to get vaccinated and reduce the risk of influenza. When players were paid according to individual point totals, more elderly than young players got vaccinated, a finding consistent with the Nash equilibrium predicting self-interested behavior. When players were paid according to group point totals, however, more young than elderly players got vaccinated-a finding consistent with the utilitarian equilibrium predicting group-optimal behavior-which resulted in higher point totals than when players were paid for their individual totals. Thus, payout structure affected whether individuals got vaccinated for self-interest or group benefit.     

Self-enhancement or self-coherence? Why people shift visual perspective in mental images of the personal past and future

It is often assumed, by laypeople and researchers alike, that people shift visual perspective in mental images of life events to maintain a positive self-concept by claiming ownership of desirable events (first-person) and disowning undesirable events (third-person). The present research suggests that people shift perspective not according to the pictured event's desirability but according to whether they focus on the experience of the event (first-person) or on the event's coherence with the self-concept (third-person). This explains why self-change promotes third-person imagery of prechange selves (Studies 1 and 2). And, the same mechanism determines perspective apart from self-change, in both memory and imagination (Studies 3 and 4). By demonstrating that people shift perspective according to whether they focus on the experience of an event or its self-concept coherence, these results suggest how perspective may function more broadly in social cognition, and specifically in the construction and maintenance of the temporally extended self.     

The illness reframing process in an ethnic-majority population of older people with incurable cancer: variations of cultural- and existential meaning-making adjustments

Increasing numbers of older people in Western countries are living with incurable cancer as a chronic disease, receiving palliative care from specialised healthcare contexts. The study's aim was to understand variations of cultural- and existential meaning-making adjustments in a Norwegian majority population of older people with incurable cancer. Semi-structured interviews from 21 participants, aged 70–88, were analysed according to three identified types of belief frames: atheistic/humanistic, religious, and spiritual. Kleinman's medical anthropology cultural framework was adapted and applied deductively together with a reframing metaphor concept in a four-part analytic process. Independent of the differences among the types of belief frames and heterogeneous illness reframing processes, changes in the existential cultural dimension seemed to facilitate psychosocial adjustments in relation to illness, daily living, relationships, and surroundings. The results point to the need for collecting and assessing the function of this type of patient information for better understanding the patient's framework of interpretation, and for identifying treatment-planning resources.     

Keeping memories at an arm's length: vantage point of trauma memories

This study investigated the relationship between memory vantage point and avoidance following trauma. Sixty trauma survivors with differing levels of avoidance were interviewed about the vantage point of their memory for trauma, a positive memory, and a neutral memory. Avoidant individuals were more likely to remember their trauma from an observer perspective than individuals with a lower level of avoidance. Avoidance did not influence vantage point for positive or neutral memories. These data support the proposal that adoption of the observer vantage point for trauma memories may serve an avoidant function for people affected by trauma.     

先秦社会心理思想管窥

先秦时期出现了一些富有时代特色的社会心理思想。主要包括：同人心、恒产恒心、上行下效、赏罚贵信等。其中“同人心”是先秦社会心理思想的总纲,其它社会心理思想都是以此为出发点和归宿的。先秦思想家们使用了一套与现代社会心理学不同的概念体系。他们凭借这套概念体系准确反映出特定历史条件下中国人的社会心态,至今仍有借鉴价值。     

The Function of Confession: A Study Based on Experiences

In Finland, confession has been an object of discussion within the Church for a long time. While people have demanded that its role be increased, it has almost solely been discussed in terms of quantity. This study examines people's experiences of confession on the basis of 200 letters. These experiences show that it is not the form of confession that is the central issue, but rather its function, that is, giving relief. Thus the artificial borderline between confession, pastoral counselling, and psychotherapy is blurred. The goal should thus be not to stimulate confession, but rather to stimulate ways of helping people. The starting point must be a person's distress and on the basis of this one should decide which form of help is the most relevant in any given situation.     

Perception of artificial stereoscopic stimuli from an incorrect viewing point

The present study investigates the distortions in the perception of artificial stereoscopic displays seen from an inappropriate distance and/or orientation. Stereoscopic displays represent 3-D information correctly, provided they are seen from the correct station point. The viewing point may differ from the correct station point in its distance or in its orientation to the screen. These differences lead to distortions that can be predicted mathematically. However, the perceptual function may be different from the predictions, since people may possibly compensate for the distortions. To test the degree of this compensation, participants saw anaglyphic stereoscopic stimuli that showed angles in the horizontal plane, and their perception of the configuration was tested for various orientations and distances. The estimates were compared with the values predicted from the mathematical functions, and participants' virtual positions were reconstructed via nonlinear regressions. The analyses revealed a moderate compensation for viewing orientations and a systematically overestimation of the viewing distances. These results indicate that people compensate partially for distortions in stereopsis, given that the relevant information is available.     

技术文明社会的生态危机意识--评法兰克福学派的科技决定论

本文介绍和分析了法兰克福学派内部在如何看待科技的生态功能问题上的两种迥然不同的观点,指出了它们各自论点中存在的误识和留给人们的启迪,论证了科技进步与合理解决环境污染,生态平衡等全球性问题之间密不可分的关系。     

Libertarianism,Climate Change,and Individual Responsibility

Much has been written about climate change from an ethical view in general, but less has been written about it from a libertarian point of view in particular. In this paper, I apply the libertarian moral theory to the problem of climate change. I focus on libertarianism’s implications for our individual emissions. I argue that (i) even if our individual emissions cause no harm to others, these emissions cross other people’s boundaries, (ii) although the boundary-crossings that are due to our ‘subsistence emissions’ are implicitly consented to by others, there is no such consent to our ‘non-subsistence emissions’, and (iii) there is no independent justification for these emissions. Although offsetting would provide such a justification, most emitters do not offset their non-subsistence emissions. Therefore, these emissions violate people’s rights, which means that they are impermissible according to libertarianism’s non-aggression principle.

     

《太平广记》中的蛇信仰研究

根据《太平广记》蛇类故事和龙类故事的记载,论述汉魏至隋唐时期民间对蛇的信仰情况,指出当时的蛇信仰正处于与龙信仰的混淆与渐渐析离时期。一方面蛇具有与龙相同的神圣性,另一方面蛇也开始遭到人们的嫌恶。龙蛇信仰的最终分离,使他们在民间信仰中朝着两个截然不同的方向发展下去。