Hobson’s Conception of Definable Numbers

In this paper, I explore an intriguing view of definable numbers proposed by a Cambridge mathematician Ernest Hobson, and his solution to the paradoxes of definability. Reflecting on König’s paradox and Richard’s paradox, Hobson argues that an unacceptable consequence of the paradoxes of definability is that there are numbers that are inherently incapable of finite definition. Contrast to other interpreters, Hobson analyses the problem of the paradoxes of definability lies in a dichotomy between finitely definable numbers and not finitely definable numbers. To bypass this predicament, Hobson proposes a language dependent analysis of definable numbers, where the diagonal argument is employed as a means to generate more and more definable numbers. This paper examines Hobson’s work in its historical context, and articulates his argument in detail. It concludes with a remark on Hobson’s analysis of definability and Alan Turing’s analysis of computability.     

中文阅读中长距离回视引导机制的眼动研究

从记忆的角度, 探讨中文阅读中长距离回视的引导机制。采用眼动实验, 操纵了回视条件(实验1)、回视可见性(实验2)、目标词位置及词频变量。结果发现:与不阅读组相比, 阅读组的最初回视误差更小, 定位效率更高; 与可见组相比, 不可见组累积回视距离更大, 且难以正确定位目标; 目标词位置主效应显著, 而词频主效应不显著。结果表明, 回视具有空间选择性, 最初的回视由空间记忆引导, 最初回视后的修正眼跳在文本可见情况下才能正常进行, 而词频这一言语属性对回视没有显著影响, 本研究结果支持了空间编码假设。     

“气质”人性论的理论特质——以王廷相对“生之谓性”的阐发为中心

明儒王廷相以孔子的“性相近”批判朱熹的“性善论”,并且重构了“性善论”人物谱系,其背后始终贯穿着对“生之谓性”的阐发这一线索。在王廷相的“气质”人性论中,先天“气禀”所带来的“善性”与“恶性”在整个人性中所占的比重较小,重点在于后天通过“变化气质”以改变人性。变化气质存在两种情况,分别通向“善性”与“恶性”,其差别在于是否研习、践行“圣人之教”。王廷相通过区分两种“知识”系统以及设定人人都有“为善之才能”,为个体向善准备了理论前提。而其对人性滑向“恶性”的警惕,凸显了“圣人之教”的重要作用。     

邪教团体检测项目:量表编制与信效度研究

本研究从提高社会公众认知度出发,通过对中外相关文献研究,结合帮教专职干部、宗教学专家、心理学者、大学生访谈结果,编制了"邪教团体检测项目",通过3次条目筛查后制定了62项初始项目;又通过214名大学生探索性因素分析,形成了由5个维度、32个条目组成的正式项目;再通过497名大学生的测查,考察各项测量学指标,结果显示量表区分度、信度、效度指标均较高,结论是"邪教团体检测项目"具有较高的可靠性和有效性,可作为邪教团体检测的评估工具。     

Nonmonetary and nonreciprocal freecycling: Motivations for participating in online alternative giving communities

This research examines consumers' participation in a nonmonetary, nonreciprocal form of online consumer exchange wherein consumers may decide to give only, receive only, or both give and receive. Given the lack of financial incentives or relational norms that would traditionally drive participation in this societally beneficial consumption activity for which we advance the term alternative giving, this research examines consumers' participation motivations. Are consumers, as prior research suggests, motivated to participate in alternative giving activities on the basis of prosocial motives or for other reasons? Through a content analysis of the online Freecycle Network, we found that participation is driven primarily by fundamental consumer needs and wants, though other prosocial, less materialistic factors are also drivers. Our findings also identify an inconsistency in product categories between what givers offer and what receivers seek, suggesting that supply–demand imbalances can emerge within alternative giving communities.     

线索冲突情境下幼儿对不同领域知识的选择性信任特点

探讨幼儿在准确性线索和共识线索冲突情境下对自然与社会领域知识的选择性信任特点。实验1探究幼儿在线索冲突情境下对自然领域知识的选择性信任,选取88名4~6岁幼儿,采用对物品命名的方法,结果发现4岁幼儿依据共识线索进行信任判断,而5~6岁幼儿依据准确性线索进行信任判断;实验2探究幼儿在线索冲突情境下对社会领域知识的选择性信任,选取94名4-6岁幼儿,采用对人格特质命名的方法,结果发现4岁幼儿依据共识线索进行信任判断,5岁幼儿对两类线索没有做出偏向性选择,6岁幼儿依据准确性线索进行信任判断。实验3采用被试内设计,探讨5岁幼儿对两个领域知识的选择性信任,验证了实验1和实验2的相关结果。结论:在线索冲突情境下幼儿对不同领域知识的选择性信任具有不同的年龄发展特点。     

Action-based and vision-based selection of input: Two sources of control

In the first part of this paper we review evidence suggesting that there exists a mechanism that selects input on the basis of its similarity to the required action. This response-based input selection differs from the more established space- and object-based input selection in that it is not constrained by the structure of the input. Our evidence suggests that the two-choice Stroop effect is caused by this response-based selection mechanism. By contrast, it is known that the flanker effect is determined by the space- and object- based selection mechanisms. We explore whether the conflict resolution of the Stroop and flanker tasks is different as well by embedding these two tasks in a PRP (Psychological Refractory Period) paradigm. We show that the Stroop and the PRP effects are additive whereas the flanker and the PRP effects are underadditive, suggesting that the processes in charge of the conflict resolution in the Stroop and the flanker tasks are indeed different. We discuss possible reasons for this difference, and discuss possible ways in which the response-based mechanism can be implemented in information processing models.     

Win-shift and win-stay learning in the short-beaked echidna (<Emphasis Type="Italic">Tachyglossus aculeatus</Emphasis>)

Numerous previous investigators have explained species differences in spatial memory performance in terms of differences in foraging ecology. In three experiments we attempted to extend these findings by examining the extent to which the spatial memory performance of echidnas (or "spiny anteaters") can be understood in terms of the spatio-temporal distribution of their prey (ants and termites). This is a species and a foraging situation that have not been examined in this way before. Echidnas were better able to learn to avoid a previously rewarding location (to "win-shift") than to learn to return to a previously rewarding location (to "win-stay"), at short retention intervals, but were unable to learn either of these strategies at retention intervals of 90 min. The short retention interval results support the ecological hypothesis, but the long retention interval results do not. Electronic Publication     

The Factor Structure of the Beavers Interactional Scales

Confirmatory factor analysis and regression analyses of the Beavers Interactional Scales did not appear to support the model offered by its developers, namely, several specified family attributes contributing respectively to two global factors of Family Competence and Family Style. Moreover, regression analysis indicated that only three of 12 items predicted raters' assessments of Global Family Health, and one of seven items predicted Global Family Style. Individuals interested in the family dynamic centripetal/centrifugal might best think of that as a unitary entity and rate it accordingly.