The impact of landmark properties in shaping exploration and navigation

This study was aimed at uncovering physical and geometric properties that make a particular landmark a target of exploration and navigation. Rats were tested in a square open-field arena with additional portable corners featuring the same properties as the arena corners. It was found that the routes of progression converged upon the added corners, whether located at the arena wall or the arena center. Route convergence upon the added corners involved numerous visits to these corners. However, time spent at the added corners was relatively short compared with the arena corners, including that from which rats were introduced into the arena. There was no differential effect of testing rats in light or dark, or with a low versus a high portable corner. It is suggested that the added corners were distinct against the background of the arena enclosure, whereas the four arena corners and walls were encoded by the rats as one geometric module. This distinctness, together with the greater accessibility of the added corners, made them salient landmarks and a target of exploration. Thus, the impact of a landmark extended beyond its specific self-geometry to include accessibility and distinctness, which are contextual properties. In addition to the contextual impact on locomotor behavior there was also a temporal effect, with security initially dominating the rats’ behavior but then declining along with an increased attraction to salient landmarks. These spatiotemporal patterns characterized behavior in both lit and dark arenas, indicating that distal cues were secondary to local proximal cues in shaping routes.     

不同空间构型下邻近性对视觉工作记忆中相似性效应的影响

相似性对视觉工作记忆表征的促进被称为相似性效应。以相似项目间的距离和是否插入其他项目改变邻近性,并操纵记忆项空间构型有序性,探讨邻近性对相似性效应的影响。结果发现,不同空间构型和邻近性条件下相似项目的记忆正确率高于非相似项目;在空间构型有序下,相似项目距离远时,插入其他项目时的相似性效应值低于不插入,而空间构型无序下未发现显著差异。这表明相似性促进视觉工作记忆表征,空间构型在邻近性对相似性效应的影响中起重要作用。     

论西方主流伦理理论的前提错误——兼论道德无力症与冷漠症对医疗的影响

从“畏死的恐惧”出发重塑扎根生命的道德基础,即道德行为和“生-生”式的道德关系是人的本真需要,道德权威性的根据是人类生命共同体这一“内在永恒大我”和人的本真存在方式的需要。这拯救了道德相对主义,也使个体作为潜在的人类生命共同体而能以“与永恒相关的生命意义”推开恐惧。进而,道德行为是出于内在自由而达于实在的自由的。道德主体应具备的道德实践能力包括独立能力、通达能力和勇气。生存性境况中的原子式个体不具备道德实践能力,生命境况中的“超个体的个体”才有此能力。由此,人类道德无力症和道德冷漠症的根源是西方主流伦理理论的前提错误,即以原子式个体充任道德主体。它是医疗纠纷和暴力频发的原因。     

语义联系对关联再认神经机制的调节

已有研究显示,关联再认可记录到分别反映双重加工模型的两阶段（即熟悉和回忆）的ERP成分（即FN400和LPC成分）,且具有高语义联系配对的关联再认可通过整合在基于熟悉加工的基础上完成。然而,不同语义联系对关联再认神经机制的影响及单个项目的熟悉和回忆加工的调节作用尚未揭示。为此,本研究比较了主题相关和类别相关图形关联再认的波形波幅异同,并分析了单个项目的熟悉和回忆加工对配对识别的影响。结果显示,主题相关和类别相关条件的旧配对、重组配对和“旧+新”配对均记录到反映熟悉加工的FN400成分,主题相关条件的旧配对、重组配对和“旧+新”配对均记录到反映回忆加工的LPC成分,类别相关条件的旧配对记录到LPC成分。表明关联再认的神经机制受语义联系所调节,单个项目的熟悉程度可影响配对识别时的神经机制,上述结论支持双重加工模型。     

内隐理论与群体关系

内隐理论是外行人对社会世界中人与事的朴素解释。人们对社会分类(种族、宗教、性别、职业等)属性的理解, 影响着个体对群体信息的加工、判断和反应, 能显著地预测群体过程(如刻板印象、偏见、歧视等), 并调节着社会认同的心理效应, 这弥补了社会认同过程中对个体差异的考虑, 对社会认同理论的发展具有重要贡献。实证研究表明：在改善和促进群体关系的实践中, 可以将外行人的内隐理论作为一个中介, 以此减少刻板印象和偏见, 培育良好的群体关系。未来研究中, 需要进一步整合内隐理论的概念, 采取一些纵向的研究为实践提供科学的指导。     

观点采择:概念、操纵及其对群际关系的影响

观点采择是指个体从他人或他人所处情境出发,想象或推测他人观点与态度的心理过程.观点采择能积极或消极地影响群际关系.依照研究内容是否涉及群际互动,可以将前人研究分为静态研究与动态研究.静态研究中,观点采择可以通过自我—他人融合、不公正感知等中介机制影响群际关系.动态研究中,观点采择可能引发反应性自我中心主义与评价关注,进而影响群际关系.未来可以从观点采择的真实干预、对群际冲突感知的影响以及检验观点采择与群际关系的调节变量等角度深入研究.     

儿童社会观点采择的发展及其与同伴互动关系的研究

采用经过标准化处理的观点采择故事对幼儿园大班和小学二、四、六年级儿童的社会观点采择能力进行测量,利用录像观察技术和同伴评定法分别测定幼儿园大班和小学儿童的同伴社会互动经验,考察儿童社会观点采择的发展及其与同伴互动经验之间的关系。研究发现：（１）幼儿园大班儿童在准确采择他人观点方面还存在较大困难,６－１０岁为儿童社会观点采择能力快速发展的时期,１０岁左右的小学儿童能够根据有关事件信息准确推断他人的观     

The nonequivalence of behavioral and mathematical equivalence.

Sidman and his colleagues derived behavioral tests for stimulus equivalence from the axiom in logic and mathematics that defines a relation of equivalence. The analogy has generated abundant research in which match-to-sample methods have been used almost exclusively to study interesting and complex stimulus control phenomena. It has also stimulated considerable discussion regarding interpretation of the analogy and speculation as to its validity and generality. This article reexamines the Sidman stimulus equivalence analogy in the context of a broader consideration of the mathematical axiom than was included in the original presentation of the analogy and some of the data that have accumulated in the interim. We propose that (a) mathematical and behavioral examples of equivalence relations differ substantially, (b) terminology is being used in ways that can lead to erroneous conclusions about the nature of the stimulus control that develops in stimulus equivalence experiments, and (c) complete analyses of equivalence and other types of stimulus-stimulus relations require more than a simple invocation of the analogy. Implications of our analysis for resolving current issues and prompting new research are discussed.