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经典的风险决策研究及相关理论模型关注人们如何对以不同概率出现的损益结果进行评价与选择,但很少区分和探究在相同概率和损益值下不同风险来源对决策的影响。事实上,决策情境中的风险既可能源自客观因素,也可能源自人为因素。与相同大小的客观风险相比,人们更规避人为风险,这种现象被称为"背信规避"。本研究采用信任博弈任务,通过最小可接受概率法和决策选择法两种方式探讨风险来源对决策冒险性的影响。结果发现:(1)中国被试存在"背信规避"现象,即对人为风险的规避程度高于客观风险;(2)当恐惧情绪被唤起时,被试对人为风险的规避程度降低,使得背信规避现象消失,甚至出现"反背信规避"倾向;(3)人际联结需求影响背信规避,人为风险下人际联结需求中介了恐惧情绪对决策冒险性的影响。上述结果有助于加深我们对风险来源影响决策的现象及其机制的理解。 相似文献
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以负性项目-中性场景以及中性项目-中性场景组成的图片对为材料,通过操控项目-场景之间的语义联系和空间距离,考察了负性情绪对不同语义、空间关系联结记忆的影响。结果显示,当项目-场景空间距离较近时,无论项目-场景之间的语义是否相关,负性情绪始终不会影响项目-场景联结记忆;当项目-场景空间距离较远且语义不相关时,负性情绪会削弱项目-场景联结记忆;而当项目-场景空间距离较远且语义相关时,负性情绪会促进项目-场景联结记忆。结果表明,负性情绪对项目-场景联结记忆的影响会受到项目与场景之间语义关系和空间关系的调节,且语义关系在项目-场景空间距离较远时的作用更为突出。 相似文献
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听写困难是一种发生率较高的儿童学习障碍现象。听写困难的认知机制,主要包括语音加工缺陷、字形表征缺陷以及形音联结编码缺陷。本研究通过两个实验,考察了整字语音竞争和部件语音竞争,对听写困难儿童形音联结编码的影响。结果发现,在不同条件下,听写困难儿童的形音联结水平都落后于正常儿童;整字语音竞争显著干扰了正常儿童的形音联结编码,但对听写困难儿童的影响并不明显;与之相反的是,部件语音竞争对听写困难儿童的干扰更为明显。研究结果支持听写困难儿童的形音联结编码缺陷理论。在此基础上,听写困难儿童的形音联结较少受到整字语音的竞争干扰,但更容易受到部件语音的竞争干扰,这可能是因为,他(她)们的整体字形加工或表征存在缺陷,导致原生字字形和语音信息难以被激活,以及合体字的部件信息得到更多的加工所致。 相似文献
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现代联结主义是神经科学、信息科学和心理科学融合生成的产物,神经网络是依据联结主义理论设计的模拟人脑神经系统的模型。该文章首先介绍了神经网络及其特性,在对生物神经元和人工神经元的结构和功能进行比较的基础上,重点介绍了神经网络模型的结构、分类、激活规则以及学习规则。最后简要讨论了联结主义神经网络模型在心理学中的一些应用及存在的问题。 相似文献
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生者与逝者的关系不会因为死亡而终止, 在逝者离世之后, 生者可能继续与逝者保持持续的、内在的联结, 这被称为“持续性联结”。持续性联结在不同文化中均普遍存在, 已有研究从联结控制点、联结的引发者等维度对其进行分类, 近年来, 持续性联结对丧亲后适应的影响成为丧亲及哀伤研究中的热点。持续性联结与丧亲后适应的关系呈现出复杂且不一致的研究结论。未来的研究应该在本土文化背景下去探索持续性联结的表现及特定意义, 思考持续性联结的分类并编制本土化的测量工具, 与此同时, 应该在理论驱动下去开展持续性联结与适应关系的实证研究。 相似文献
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关于选择偏好可变性的心理机制,新联结主义框架下的联结网络模型强调决策是动态的随机的过程.其中,多备择决策场理论强调由心理场距离决定水平抑制强度的线性关系,渗漏竞争累积模型强调主观价值评价过程中非线性的规避损失偏向. 相似文献
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联结主义神经网络及其在心理学中的应用 总被引:13,自引:0,他引:13
现代联结主义是神经科学、信息科学和心理科学融合生成的产物,神经网络是依据联结土义理论设计的模拟人脑神经系统的模型。该章首先介绍了神经网络及其特性,在对生物神经元和人工神经元的结构和功能进行比较的基础上,重点介绍了神经网络模型的结构、分类、激活规则以及学习规则。最后简要讨论了联结主义神经网络模型在心理学中的一些应用及存在的问题。 相似文献
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语义记忆的联结主义模型述评 总被引:2,自引:0,他引:2
联结主义研究取向是近十几年来认知心理学中一种主导性的指导思想、记忆研究领域已出现了不少联结主义模型。本文主要介绍有关语义记忆的联结主义模型的历史演变,并阐述该模型特点及基本结构假设、加工假设和控制假设,最后对该模型的优点和局限进行评价。 相似文献
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Ross Paul Cameron 《Synthese》2008,161(1):27-45
In this paper I examine the objection to truthmaker theory, forcibly made by David Lewis and endorsed by many, that it violates
the Humean denial of necessary connections between distinct existences. In Sect. 1 I present the argument that acceptance
of truthmakers commits us to necessary connections. In Sect. 2 I examine Lewis’ ‘Things-qua-truthmakers’ theory which attempts
to give truthmakers without such a commitment, and find it wanting. In Sects. 3–5 I discuss various formulations of the denial
of necessary connections and argue that each of them is either false or compatible with truthmaker theory. In Sect. 6 I show
how the truthmaker theorist can resist the charge that they are committed to necessary exclusions between possible existents.
I conclude that there is no good objection to truthmaker theory on the grounds that it violates the Humean dictum. 相似文献
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What are the implications of seeing others as they see themselves? That is, does viewing others accurately have consequences, positive or negative, to relationship evaluations (e.g., liking)? To address this, the current article provides a comprehensive review of the personality accuracy literature and discusses related work from the self-verification and empathic accuracy domains. We specifically explore whether the consequences of accurate perceptions could be influenced by two key categories of moderators: the context of the impression (e.g., high vs. low stakes) and content of the impression (e.g., desirability of traits). Lastly, we discuss future directions to aid our understanding of this question. 相似文献
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Individuals lacking fulfilling interpersonal interactions may experience feelings of loneliness. Consequently, these individuals may over-rely on their romantic partners to fulfill the need to belong. This study examined the effects of loneliness and social isolation on dependency on a romantic partner in a sample of college students (N = 104). Participants who were in a romantic relationship completed measures of loneliness, social isolation, and romantic dependency near the beginning of the semester (Time 1) and approximately 6 weeks later toward the end of the semester (Time 2). Toward the beginning of the semester, there were no significant predictors of dependency. Toward the end of the semester, individuals who reported higher social isolation reported higher levels of dependency. Time 1 dependency also predicted Time 2 dependency. Future methodological directions and suggestions regarding the examination of perceptions of loneliness and relationship expectations are discussed. 相似文献
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Individuals have a need to maintain positive social interactions, and with the advent of new-media technologies, there are a myriad ways individuals can satisfy this need by engaging socially in mediated (non-face-to-face) communication, hence the need for a special issue on “Relationships in the Digital Age.” The articles in this special issue reflect the need to answer theoretical questions brought forth by the increased tendency for individuals to create and maintain interpersonal relationships through mediated forms of communication. The commentary highlights the need for increased research on mediated interpersonal relationships by psychologists and discusses how the articles in the issue can be used to answer theoretical questions about mediated interpersonal communication. The article ends with speculation on how media may create social spaces that may be advantageous for some individuals. 相似文献
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影响大学生人际关系主观因素的初步研究 总被引:13,自引:0,他引:13
用自编的大学生人际关系主观因素问卷对800名1-4年级本科生进行调查。结果表明,影响大学生人际关系的主观因素涉及人际安全、人际疑虑、人际张力和人际报复;大学生的人际安全因子得分为3.86,人际张力、人际疑虑和人际报复因子得分和总均分在1.8-2.6之间;人际张力、人际疑虑、人际报复因子存在显著的年级差异(p<0.01);男生在人际报复因子上的得分明显高于女生;理科生的人际张力、人际报复和主观因素总均分显著高于文科生,人际安全因子得分显著低于文科生。表明大学生的人际安全感较强,人际交往和相处中的负性体验较弱,但存在年级、性别、专业等方面的差异。 相似文献
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14个小组的大学生共68人参加两种不同的群体工作,其中7组进行开放式问题的讨论,7组进行封闭式问题的讨论。从工作进程、工作模式和工作特点等方面记录群体工作行为:工作进程各阶段所用时间,发言的针对性,发言的连续性,说明问题的方式和深度,群体的意见分歧与支持行为和表达方式。结果表明:封闭式问题需要更多的时间澄清问题并且更多引用例子来阐述观点;讨论开放式问题多采用归纳推理而封闭式问题多采用演绎推理;无论在哪种问题的讨论中,针对个体的发言都显著多于针对整体的发言,而且人们更多地以非言语的方式而不是口头方式表示赞成。本文对以上结果在电视、电话和计算机辅助会议系统设计中的应用作了进一步讨论 相似文献
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网络人际交往对中国人际关系模式的影响 总被引:1,自引:0,他引:1
互联网的发展已经远远超出了其作为信息传递和信息共享工具的功能,正在对人们的工作、娱乐、交往、消费、学习等产生越来越大的影响,其所具有的不同于现实人际交往的物理环境的独特特征,为现实生活中的人们提供了一个全新的交往空间,似乎将瓦解现实社会生活中基于面对面的人际交往而形成的人际关系模式。但当互联网所营造的虚拟交往空间仅仅被人们当成扩大交往对象和社会关系圈的工具时,其对现实人际关系模式可能产生的根本性影响却值得质疑。 相似文献
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通过对巴林特小组培训模式的认识和理解,并将之运用于临床护理研究,使护理人员在处理护患关系中形成新的视角和更具分析性的思考方式,从而能够更深刻地意识到自身对于患者的影响,提高换位思考的敏感性,以便更好地理解和帮助患者;同时还能促进护理人员的心理健康和减少其工作中存在的护患矛盾。这不仅可以提高患者的治疗效果和生活质量,而且还可以提升护理人员自身的职业素养。因此,巴林特小组培训模式对于实现临床护理优质服务具有重要的现实意义。 相似文献
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Nominal concepts represent things as tokens of types. We report six experiments that investigate the nature of the relations we represent between the type of thing something is (e.g. DOG) and its other properties. The experiments provide evidence that we represent principled connections between the type of thing something is (e.g. DOG) and some of its properties (k-properties; e.g. having four legs for dogs), but not other properties (t-properties; e.g. being brown for dogs). Principled connections are different from logical, statistical, and causal connections. Principled connections, (i) license the expectation that tokens of the type will generally possess the k-property, (ii) license explanation of the presence of k-properties in tokens of a type by reference to the type of thing it is, and (iii) license normative expectations concerning the presence of the k-property in tokens of the type. The experiments provide evidence for all three of these aspects of principled connections. The experiments also demonstrate that principled connections must be distinguished from merely strong statistical connections. We suggest that principled connections are one of the fundamental types of relations (in addition to logical, statistical, and causal relations) in terms of which our conceptual knowledge is structured. We argue that principled connections reveal a formal mode of understanding and explanation. This mode of understanding complements other modes of understanding that have been studied within the theory-based approach to conceptual representation. Finally, we suggest that kind representations are distinguished from representations of mere types by the representation of principled connections to k-properties. 相似文献