Experience-grounded semantics: a theory for intelligent systems

An experience-grounded semantics is introduced for an intelligent reasoning system, which is adaptive, and works with insufficient knowledge and resources. According to this semantics, truth and meaning are defined with respect to the experience of the system – the truth value of a statement indicates the amount of available evidence, and the meaning of a term indicates its experienced relations with other terms. The major difference between experience-grounded semantics and model-theoretic semantics is that the former does not assume the sufficiency of knowledge and resources. This approach provides new ideas to the solution of some important problems in cognitive science.     

大学生英语学习过程中认知因素与情感因素对学业成绩的影响

利用调查问卷法对152名大学生就英语学习中的认知因素(以学习风格和学习策略为核心)和情感因素(以成就动机和学习意愿为核心)对于学习成绩的影响进行了相关研究,继而通过多元回归方法与路径分析技术,探讨了三者之间的因果关系。研究结果表明,学习意愿、成就动机、学习风格与英语成绩之间具有显著性相关,而学习策略与英语成绩之间的相关不显著。学习风格作为中介变量在对学生的英语学习有着重要的影响。学习意愿与成就动机通过学习风格而问接地作用于英语学习绩效。     

广告传播途径与人们对产品确信度的影响

通过三个实验考察了广告传播途径与人们对产品确信度之间的关系。实验一发现,中心传播途径能够增加被试对科技品的确信度,而边缘途径能够增加被试对日用品的确信度;中心途径能够增加场独立被试对产品的确信度,边缘途径能够增加场依存被试对产品的确信度。实验二发现,反自身利益的广告传播更能够增加被试对产品的确信度;实验三发现,间接传播能够增加被试对产品的确信度,产品类型与传播途径及传播途径与被试认知风格之间都存在着交互作用。     

An imputed dissociation might be an artifact: Further evidence for the generalizability of the observations of Durgin et al. 2010

We recently showed that palm board measures are systematically inaccurate for full-cue surfaces within reach of one's hand, whereas free-hand gestures and reaching actions are quite accurate for such surfaces (Durgin, Hajnal, Li, Tonge, & Stigliani, 2010). Proffitt and Zadra (2010) claim that our demonstration that palm boards are highly inaccurate is irrelevant to interpreting past and present findings concerning dissociations between verbal reports and palm board estimates. In their paper they offer a theoretical representation of the findings of Bhalla and Proffitt (1999) and argue that our analysis is incompatible with their account. We offer here an alternative account of the findings of Bhalla and Proffitt, based on their actual data (which are fully compatible with our original analysis). We further show how our account generalizes to more recent studies that continue (1) to mistakenly describe null statistical effects on (insensitive) palm boards as evidence of a “dissociation” from (more sensitive) verbal measures that show a similar relative magnitude of change and (2) to introduce uncontrolled demand characteristics.     

Perceptual scale expansion: an efficient angular coding strategy for locomotor space

Whereas most sensory information is coded on a logarithmic scale, linear expansion of a limited range may provide a more efficient coding for the angular variables important to precise motor control. In four experiments, we show that the perceived declination of gaze, like the perceived orientation of surfaces, is coded on a distorted scale. The distortion seems to arise from a nearly linear expansion of the angular range close to horizontal/straight ahead and is evident in explicit verbal and nonverbal measures (Experiments 1 and 2), as well as in implicit measures of perceived gaze direction (Experiment 4). The theory is advanced that this scale expansion (by a factor of about 1.5) may serve a functional goal of coding efficiency for angular perceptual variables. The scale expansion of perceived gaze declination is accompanied by a corresponding expansion of perceived optical slants in the same range (Experiments 3 and 4). These dual distortions can account for the explicit misperception of distance typically obtained by direct report and exocentric matching, while allowing for accurate spatial action to be understood as the result of calibration.     

王阳明心学视域下的易学观

学界一般认为"龙场悟道"是阳明心学创立的直接契机,而"龙场悟道"又与"玩易"关系紧密,尽管并不能由此得出《易》即为阳明学术之"大本大源",但不可否认,《易》之思想资源确实对阳明心学产生了重要影响。通过讨论《易》之书、易之道、卜筮、象数等诸方面的内容,阳明一方面赋予易学以心学意味,同时也使得其心学明显表现出"体用一源"的易学思维方式。这一解《易》路径对其后学影响深远,开启了以易学注解、诠释阳明心学的滥觞。     

神经肌肉下意识前馈与反馈控制的知觉线索效应

为研究视觉和时间知觉线索对突发外部姿势干扰下中枢神经系统对动作肌肉和姿势肌肉预期姿势调节(APAs)和补偿姿势调节(CPAs)的影响, 本研究被试分别在视觉和时间线索引导下完成经典落球试验, 同步采集右侧动作肌肉肱二头肌和姿势肌肉腰部竖脊肌和腰部多裂肌的sEMG信号, 计算被检肌肉APAs发生率、预激活时间和CPAs反应强度。结果发现, 视觉线索可以引发动作肌肉和姿势肌肉APAs发生率明显增加, 预激活时间明显提前, 以及动作肌肉CPAs反应强度明显减小; 而时间线索主要引发动作肌肉预激活提前, 对姿势肌肉APAs和CPAs无明显影响。该结果表明, 视觉和时间引导线索对突发外部姿势干扰条件下人体姿势肌肉和动作肌肉的中枢运动控制具有不同的作用。视觉引导线索能够明显增加姿势肌肉和动作肌肉预激活发生率和提早预激活时间, 表现出明显的“视觉线索预激活优势现象”; 而时间引导线索主要引发动作肌肉预激活提前, 对姿势肌肉APAs和CPAs无明显影响。     

刻板印象激活的无意图性及其大脑神经活动特征

采用启动Stroop范式, 对刻板印象激活的无意图性及其大脑神经活动特征进行了探讨。操纵了启动和“无启动”条件以及与启动所激活的刻板印象一致、冲突和无关的3类靶子词, 记录了36名大学生被试对靶子词进行颜色判别的行为反应和脑电图(EEG, electroencephalogram)。结果发现：(1)“无启动”条件下对3类靶子的反应时基本一致; 启动条件下对一致靶子做出颜色判别的反应时显著快于对冲突靶子的, 对无关靶子的反应时介于两者之间。(2)“无启动”条件下无关靶子诱发的N400波幅最大--显著大于一致和冲突靶子诱发的, 后两者诱发的N400无差异; 启动条件下一致靶子诱发的N400波幅显著小于冲突和无关靶子诱发的N400波幅, 无关靶子诱发的N400波幅也小于冲突靶子诱发的N400波幅。这表明刻板印象激活是一个发生在知觉后加工阶段的具有无意图性的自动化加工过程, 刻板印象激活效应具有抑制冲突信息加工同时促进一致信息加工的“双刃剑”模式, N400可以作为考察这一认知过程特征的电生理学指标。     

抑郁症患者的服药依从性及影响因素

服药依从性是影响抑郁症患者疗效和复发的重要因素, 然而很多研究发现抑郁症患者的服药依从性较低。与服药依从性有关的概念有服从性、依从性和遵从性。抑郁症服药依从性的影响因素包括疾病与治疗因素、医生相关因素、患者相关因素及文化与环境因素四个方面, 主要从医生和患者两方面进行干预。其评定方法包括主观和客观两种。介绍了研究趋势, 未来应发展服药依从性测量工具, 加强本土化和社会文化因素的研究, 加强共病对抑郁症服药依从性影响的研究, 制定个别化的干预措施, 并加强心理学在抑郁症服药依从性领域的交叉研究。     

人际冲突中失望的个人效应及冲突类型的调节作用

通过两个计算机情景模拟实验, 分别采用“保证游戏”与“最后通牒博弈”范式, 考察了人际冲突中失望的个体对于威胁评价与冲突行为的影响。在此基础上进一步探讨了冲突类型对人际冲突中失望个人效应的调节作用。结果发现：(1)失望个体相比无情绪个体的威胁评价更高, 冲突行为更多。(2)冲突类型影响处于失望状态的个体的威胁评价, 即价值观冲突中失望个体的威胁评价要高于利益冲突中失望个体的威胁评价; 但是冲突类型并不影响失望个体的冲突行为。