Building to discover: a common coding model

I present a case study of scientific discovery, where building two functional and behavioral approximations of neurons, one physical and the other computational, led to conceptual and implementation breakthroughs in a neural engineering laboratory. Such building of external systems that mimic target phenomena, and the use of these external systems to generate novel concepts and control structures, is a standard strategy in the new engineering sciences. I develop a model of the cognitive mechanism that connects such built external systems with internal models, and I examine how new discoveries, and consensus on discoveries, could arise from this external-internal coupling and the building process. The model is based on the emerging framework of common coding, which proposes a shared representation in the brain between the execution, perception, and imagination of movement.     

Neural Computation and the Computational Theory of Cognition

We begin by distinguishing computationalism from a number of other theses that are sometimes conflated with it. We also distinguish between several important kinds of computation: computation in a generic sense, digital computation, and analog computation. Then, we defend a weak version of computationalism—neural processes are computations in the generic sense. After that, we reject on empirical grounds the common assimilation of neural computation to either analog or digital computation, concluding that neural computation is sui generis. Analog computation requires continuous signals; digital computation requires strings of digits. But current neuroscientific evidence indicates that typical neural signals, such as spike trains, are graded like continuous signals but are constituted by discrete functional elements (spikes); thus, typical neural signals are neither continuous signals nor strings of digits. It follows that neural computation is sui generis. Finally, we highlight three important consequences of a proper understanding of neural computation for the theory of cognition. First, understanding neural computation requires a specially designed mathematical theory (or theories) rather than the mathematical theories of analog or digital computation. Second, several popular views about neural computation turn out to be incorrect. Third, computational theories of cognition that rely on non‐neural notions of computation ought to be replaced or reinterpreted in terms of neural computation.     

中国人社会认知研究的沿革、趋势与理论建构

社会认知是指个体对社会性客体和社会现象及其关系的感知与理解。根据对象可以分为自我认知、人际认知、群际认知以及以社会决策为核心的社会事件认知。针对以上四个方面, 国内学者开展了一系列有益的探索, 为中国人社会认知的研究做出了先驱性贡献。但无论就理论建构、研究范式还是研究内容而言, 大量研究沿袭了国外研究的预设前提与范畴, 即“本位认知”, 脱离了中国人社会认知滋长的基础--以“差序格局”为基调的传统文化以及当前剧烈的社会变迁背景下转型期的文化。通过梳理与整合涉及社会认知主题的研究及其内在逻辑, 发现中国人社会认知的根本特点为“他位认知”, 并且集中体现为“差序格局”文化衍生与发展的“群际认知(阶层认知)”, 进而尝试围绕“群际认知”这条主线解读与建构中国人社会认知的理论框架, 推进中国人社会认知的深层研究, 具有深刻的理论与现实意义。     

From ‘Virgin Births’ to ‘Octomom’: Representations of Single Motherhood via Sperm Donation in the UK News

The use of sperm donation by single women has provoked public, professional and political debate. Newspapers serve as a critical means of both broadcasting this debate and effecting a representation of this user group within the public sphere. This study uses the theory of social representations to examine how single motherhood by sperm donation has been represented in the UK news over time. The study sampled news coverage on this topic in eight British newspapers during three 4‐year periods between the years 1988 and 2012. The dataset of news reports (n = 406) was analysed using a qualitative approach. Findings indicated that UK media reports of single women using donor sperm are underpinned by conventional categories of the ‘personal’, the ‘traditional’ and the ‘natural’ that when paired with their corollaries produce a representation of this user group as the social ‘other’. The amount of coverage on this topic over time was found to vary according to the political orientation of different media sources. Using key concepts from social representations theory, this article discusses the relationship between themata and anchoring in the maintenance of representations of the social ‘other’ in mass mediated communication. Findings are explained in relation to theoretical conceptions of the mass media and its position within the public sphere. It is argued that the use of personal narratives in news reports of single mothers by sperm donation may have significant implications for public understandings of this social group. © 2016 The Authors. Journal of Community & Applied Social Psychology published by John Wiley & Sons Ltd.     

The Social Representations of the Bali Climate Conference in the French and German Media

Climate change is a major current affair for which recent United Nations climate conferences aim to build consensus and develop international solutions. The objective of this article is to compare, through the theoretical lens of social representations, the way in which French and German media, specifically newspapers, represent the Bali climate conference. We use the triangulation of data analysis to take both the pragmatic and the semantic aspects of media discourse into account. Results show that German media adopt both a local and a global vision of climate change and of the conference. Religious metaphors highlight a moral dimension of the conference, suggesting anchoring in human and political categories. In contrast, in French media, we identify that conflicts between countries render the stakes of climate change concrete by war metaphors. The French discourses examined are shown to be organised through the anchoring of political and financial categories. Results are discussed in relation to the history of green movements in the two countries and in relation to practical implications. Copyright © 2011 John Wiley & Sons, Ltd.     

Constructing and contesting threat: Representations of white British Muslims across British national and Muslim newspapers

White British Muslims pose a challenge to racialised representations of British Muslims as non‐white, foreign and Other. By drawing on tools from Critical Discourse Analysis to develop Social Representations Theory on a micro‐analytic level, and making connections with other relevant social psychological theories on intergroup relations, this article examines the constructions of white British Muslims as a threat in six national and two Muslim British newspapers. It looks at how discourses are used to create, perpetuate and challenge the ‘hegemonisation’ of social representations in majority and minority press. The findings show that white British Muslims are portrayed as a threat not just despite of, but because of, their position as part of the ‘white British’ ingroup. Consequently, the threat they pose often leads to their Muslimness being emphasised. This was, at times, contested, however, either through direct challenges, or by making the threat ambivalent by drawing on their whiteness.     

Mental Representations in Stressful Situations: The Calming and Distressing Effects of Significant Others

According to attachment theory, attachment figures serve a safe haven function in stressful situations by reducing anxiety through physical proximity. The current study tested the effects of cognitive safe haven in adulthood. Thoughts of a significant other who was not physically present were hypothesized to reduce feelings of anxiety in a stressful situation. Participants imagined and described either a significant other or an acquaintance while waiting to take part in a potentially stressful task. An interaction between working models of attachment and experimental condition was found for distress scores. Thinking about a significant other led to lower levels of distress for individuals with a positive model of self, but higher levels of distress for individuals with a negative model of self.     

镜像神经元:认知具身性的神经生物学证据

传统认知心理学认为认知类似于计算机对抽象符号的加工和运算,这种观点支持了身心二元论。但是近年来兴起的具身认知运动却否定了这一观点的合理性。具身认知认为认知是身体与世界互动的结果,是身体的感觉-运动系统作用于世界而塑造出来的。认知是具身的,离不开身体的构造和感觉运动系统的作用。镜像神经元的发现支持了认知的具身特征,为认知的具身性提供了神经生物学的证据。     

Group information elaboration and group decision making: The role of shared task representations

Decision making groups often exchange and integrate distributed information to a lesser extent than is desirable for high-quality decisions. We propose that group members’ shared task representations play an important role in this respect, because groups are often insufficiently attuned to the task’s information elaboration requirements. Task representations emphasizing elaboration of decision-relevant information should therefore enhance decision-making performance. This should hold especially when group members realize that they share these task representations, because this realization removes psychological barriers to introducing new insights. Testing these hypotheses, we compared information elaboration and decision-making performance of control groups and groups receiving instructions emphasizing information elaboration in two experiments. Half of the experimental groups were also made to realize that they shared the elaboration instructions. As predicted, groups with task representations emphasizing information elaboration and the realization they shared these representations outperformed groups in the other conditions. This effect was mediated by information elaboration.     

自我的内隐社会认知研究

自我的内隐社会认知研究具备坚实的理论基础,又有严格的实证研究方法,可以促进自我理论的深入发展。目前,内隐社会认知的自我研究已经成为自我研究的新生力量。文章最后对该取向的意义和趋势作了展望。     

特质焦虑个体在高难度Stroop任务下的情绪启动效应

通过问卷法,选取特质焦虑和非特质焦虑被试作为本实验的研究对象,考察了正性、负性、中性三种不同的情绪对不同特质焦虑个体认知抑制的影响。在Stroop任务之前呈现三种情绪图片,结果发现,相比非特质焦虑被试,特质焦虑被试的Stroop效应量更大;特质焦虑被试和非特质焦虑被试在正性和负性情绪条件下的Stroop效应量均更大。说明特质焦虑被试的认知抑制功能存在不足,正性和负性情绪对特质焦虑和非特质焦虑被试的认知抑制均存在阻碍作用。     

The Neurodynamics of Cognition: A Tutorial on Computational Cognitive Neuroscience

Computational Cognitive Neuroscience (CCN) is a new field that lies at the intersection of computational neuroscience, machine learning, and neural network theory (i.e., connectionism). The ideal CCN model should not make any assumptions that are known to contradict the current neuroscience literature and at the same time provide good accounts of behavior and at least some neuroscience data (e.g., single-neuron activity, fMRI data). Furthermore, once set, the architecture of the CCN network and the models of each individual unit should remain fixed throughout all applications. Because of the greater weight they place on biological accuracy, CCN models differ substantially from traditional neural network models in how each individual unit is modeled, how learning is modeled, and how behavior is generated from the network. A variety of CCN solutions to these three problems are described. A real example of this approach is described, and some advantages and limitations of the CCN approach are discussed.     

语言对认知的影响—— 基于双语认知“优势效应”的分析

双语认知优势效应不仅在言语领域有所表现, 更主要的体现在以认知控制、注意选择、心理抑制能力为基础的非言语认知领域。影响该效应出现的因素是多方面的, 第二语言获得年龄和双语熟练程度是其中两个最为重要的因素。研究发现, 双语表征和产生机制是导致双语认知优势效应的语言学机制, 而以Broca语言区为核心的大脑前额叶则是其主要的神经基础。未来该领域的研究不仅要进一步关注双语认知优势效应产生的内在言语机制和神经基础, 还应当积极关注双语认知和个体情绪、人格发展的关系。     

生成与动力:具身认知研究中的互动观

从方法论上讲,认知研究中的个体主义把研究的焦点放在个体身上,倾向于从个体内部寻求对社会行为的解释。与个体主义取向不同的是,具身认知中的互动观更注重人际和社会互动对于理解他人的重要作用。心理学中的生态学方法最早关注了环境与有机体之间的互动对知觉产生的影响。生成认知在此基础上更进一步,认为互动不仅发生在有机体与环境之间,而且表现为主体与主体的交互影响,两个主体间的交互不是两个笛卡尔式心灵的对话,交互的主体是身体,是一种"肉身间性"的过程。具身认知研究中的互动观强调身心一体论,反对身心二元论,在方法论上表现出反还原论的特色。     

人类社会认知的神经机制:来自社会脑研究的证据

社会认知是指从环境互动的过程中推测他人意图、情感和思想等内部状态的心理加工过程。社会脑假说认为,包括人类在内的灵长类大脑内肯定存在着一个旨在认识和理解他人表情的神经机制,在社会交往中通过该中枢迅速处理与他人相互作用的各种信息。本文通过回顾社会脑的构成与基本功能,镜像神经元的发现及功能,以及社会脑、镜像神经元对社会认知影响的相关研究,提出了人类社会认知不同于其他物种的三个主要区别。