Indiscernible Persons

In this article I discuss identity and indiscernibility for person-stages and persons. Identity through time is not an identity relation (it is a unity relation). Identity is carefully distinguished from persistence. Identity is timeless and necessary. Person-stages are carefully distinguished from persons. Theories of personal persistence are not theories of identity for persons. I deal not with the persistence of persons through time but with the timeless and necessary identity and indiscernibility of persons. I argue that it is possible that there are non-identical but indiscernible temporally whole persons. I discuss the biographies of persons and develop the type or token distinction for persons. Twins in symmetrical or eternally recurrent universes are examples of indiscernible persons. I discuss temporal and modal branching, and I end with survival for person-tokens and eternity for person-types.     

Emergent social identity and observing social support predict social support provided by survivors in a disaster: Solidarity in the 2010 Chile earthquake

Survivors of disasters commonly provide each other with social support, but the social‐psychological processes behind such solidarity behaviours have not been fully explicated. We describe a survey of 1240 adults affected by the 2010 Chile earthquake to examine the importance of two factors: observing others providing social support and social identification with other survivors. As expected, emotional social support was associated with social identification, which in turn was predicted by disaster exposure through common fate. Observing others' supportive behaviour predicted both providing emotional social support and providing coordinated instrumental social support. Expected support was a key mediator of these relationships and also predicted collective efficacy. There was also an interaction: social identification moderated the relationship between observing and providing social support. These findings serve to develop the social identity account of mass emergency behaviour and add value to disaster research by showing the relevance of concepts from collective action.     

谋事在人，成事在天——新生代农民工的适应策略及可协商命运观的影响

以珠海及宁波两地439名新生代农民工为对象,使用问卷法考察了他们的适应策略、生活结果（社会文化适应状况和主观幸福感）及命运观对适应策略选择的影响。结果发现：（1）整合策略是被调查者主要使用的适应策略,可协商命运观是被调查者主要持有的命运观;（2）持有可协商命运观的个体更多选择整合策略;（3）使用整合策略的个体具有更积极的社会文化适应状况和更高的主观幸福感;（4）可协商命运观对生活结果的积极影响可通过更多使用整合策略、更少使用分离和边缘化策略完全中介。     

彩民命运控制对问题购彩的影响:购彩预期和购彩意向的链式中介作用

为考察命运控制对彩民问题购彩的影响,以及购彩预期和购彩意向在其中的链式中介作用,本研究采用问卷法对2538名彩民进行调查。结果发现:(1)彩民问题购彩与命运控制、购彩预期和购彩意向均存在正相关;(2)命运控制不仅能直接预测问题购彩,还能通过两条路径的间接作用影响彩民的问题购彩:购彩意向的中介作用;购彩预期和购彩意向的链式中介作用。本研究构建的中介效应模型在一定程度上揭示了命运控制影响彩民问题购彩的内在机制。     

婚姻质量对父母协同养育的影响：基于共同命运模型的跨层中介分析

共同命运模型(common fate model, CFM)是在家庭或二元层面研究中值得信赖的模型, 其更好地解释了亲密关系内在的相互依赖性。本研究基于共同命运模型探讨了家庭整体婚姻质量对父母协同养育程度的影响, 以及教养能力感在两者间的跨层中介作用。采用问卷法分层整群抽取上海市幼儿园中孩子(平均年龄5.14岁, 年龄范围4~7岁)的父亲与母亲参与调研, 分两个时间段(T1, T2; 间隔1年)收集数据, 最终得到650个家庭的父亲、母亲的婚姻满意度问卷(T1), 教养能力感问卷(T2)和协同养育感知问卷(T2)数据进行分析。结果发现: (1)基于共同命运模型, 家庭层面的婚姻质量正向预测家庭层面的支持性协同养育, 并负向预测家庭层面的破坏性协同养育; (2)家庭层面的婚姻质量正向预测父母各自的教养能力感; (3)父母各自的教养能力感正向预测家庭层面的支持性协同养育, 并负向预测家庭层面的破坏性协同养育; (4)父母个人层面的教养能力感在家庭层面的婚姻质量与家庭层面的支持性协同养育和破坏性协同养育起中介作用。总之, 本研究基于追踪数据运用共同命运模型, 并结合家庭层面(婚姻质量和协同养育)和个人层面(教养能力感)探讨了教养能力感在婚姻质量与父母协同养育间的跨层中介效应, 为营造良好的家庭环境提供一定的理论支持与指导意见, 并进一步促进了共同命运模型发展。     

The Machinations of Luck

Luck is at issue when it is a matter of pure chance that a result of significant positive of negative value ensues for someone. Luck differs from fate, which pivots on an individual's condition, and from fortune, which pivots on an individual's talent and effort. It is by luck that you are rich when you win the lottery, by fortune if your wealth comes from talent and hard work, and by fate if you inherit those millions. On this basis luck lies beyond anyone's rational control. With risk (R) as the probability of failure in a chancy situation and the stake (S) as the difference between a favorable and an unfavorable outcome, luck (L) can be measured as the product of these quantities: L = R × S. The condition of humankind in an uncertain world being as it is, luck cannot be eliminated as a key factor of our existence, be it in cognitive, practical, or ethical regards.     

Do pigeons (Columba livia) perceive object unity?

Human infants perceive two rods moving in concert behind an occluder as one unitary rod. In four experiments we tested whether pigeons also perceive unity of objects. Pigeons were trained on a matching-to-sample task to discriminate between one unitary rod moving at a constant speed and two aligned rods moving together at the same speed. The latter stimulus was identical to the former except for a gap in the center. In experiment 1, we tested pigeons in probe trials in which a rectangle occluded the center of the sample rods, to see which comparison stimulus, the unitary rod or the aligned two rods, the subjects would match to the sample. Two of the three subjects pecked at the two rods significantly more often than at the unitary rod. In experiment 2, we trained the same pigeons to match the sample rods moving "in front of" the occluder. Pigeons persisted in matching two separate rods to the unitary rod moving in front of the occluder. In experiments 3 and 4, we used a parallelogram and an undulating shape as the occluder to alter the shape and the size of the portions above and below the occluder by the motion of the sample rods. Both subjects chose the two rods significantly more often than chance in experiment 3 and one of them did so in experiment 4. The results suggest that pigeons do not complete occluded portions even though the two elements move in concert. These negative results suggest that some alternative way of identifying objects may have evolved in pigeons. Accepted after revision: 2 May 2001 Electronic Publication     

Emergent social identities in a flood: Implications for community psychosocial resilience

Although the mobilization of pre‐existing networks is crucial in psychosocial resilience in disasters, shared identities can also emerge in the absence of such previous bonds, due to survivors sharing a sense of common fate. Common fate seems to operate in sudden‐impact disasters (e.g., bombings), but to our knowledge, no research has explored social identity processes in “rising‐tide” incidents. We interviewed an opportunity sample of 17 residents of York, United Kingdom, who were involved in the 2015–2016 floods. Using thematic and discourse analysis, we investigated residents' experiences of the floods and the strategic function that invocations of community identities perform. We show how shared community identities emerged (e.g., because of shared problems, shared goals, perceptions of vulnerability, and collapse of previous group boundaries) and show how they acted as a basis of social support (both given and expected). The findings serve to further develop the social identity model of collective psychosocial resilience in rising‐tide disasters. Implications for policy and practice are discussed.     

How do humans group non-rigid objects in multiple object tracking?: Evidence from grouping by self-rotation

Previous studies on perceptual grouping found that people can use spatiotemporal and featural information to group spatially separated rigid objects into a unit while tracking moving objects. However, few studies have tested the role of objects’ self-motion information in perceptual grouping, although it is of great significance to the motion perception in the three-dimensional space. In natural environments, objects always move in translation and rotation at the same time. The self-rotation of the objects seriously destroys objects’ rigidity and topology, creates conflicting movement signals and results in crowding effects. Thus, this study sought to examine the specific role played by self-rotation information on grouping spatially separated non-rigid objects through a modified multiple object tracking (MOT) paradigm with self-rotating objects. Experiment 1 found that people could use self-rotation information to group spatially separated non-rigid objects, even though this information was deleterious for attentive tracking and irrelevant to the task requirements, and people seemed to use it strategically rather than automatically. Experiment 2 provided stronger evidence that this grouping advantage did come from the self-rotation per se rather than surface-level cues arising from self-rotation (e.g. similar 2D motion signals and common shapes). Experiment 3 changed the stimuli to more natural 3D cubes to strengthen the impression of self-rotation and again found that self-rotation improved grouping. Finally, Experiment 4 demonstrated that grouping by self-rotation and grouping by changing shape were statistically comparable but additive, suggesting that they were two different sources of the object information. Thus, grouping by self-rotation mainly benefited from the perceptual differences in motion flow fields rather than in deformation. Overall, this study is the first attempt to identify self-motion as a new feature that people can use to group objects in dynamic scenes and shed light on debates about what entities/units we group and what kinds of information about a target we process while tracking objects.     

Reasonable Impartiality and Priority for Compatriots. A Criticism of Liberal Nationalism’s Main flaws

Distinguishing between reasonable partiality and reasonable impartiality makes a difference in resolving the serious clashes between priority for compatriots versus cosmopolitan global duties. Defenders of a priority for compatriots have to acknowledge two strong moral constraints: states have to fulfil all their special, domestic and trans-domestic duties, and associative duties are limited by distributive constraints resulting from the moral duty to fight poverty and gross global inequalities. In the recent global context, I see four main problems for liberal-nationalist defenders of priority for compatriots: (i) Reasonable particularists often forget that associative duties for compatriots compete with many sub-national and trans-domestic associative duties. (ii) They tend to forget that associative national duties compete with other, strong special (contractual, reparative) obligations regarding not only citizens and residents inside nation-states but also trans-domestic obligations across state borders. (iii) They do not properly discuss the problem of unallocated duties in addressing global poverty and insecurity. (iv) The design of supra-national and global mediating institutions, and the crafting of policies to remedy the misallocation of duties and to coordinate the required state activities is an urgent task neglected by liberal nationalists. In the recent context, reasonable partialitys bias towards partiality is most unwelcome and morally dubious. Reasonable impartialitys bias towards cosmopolitanism helps to stimulate a drastic shift in obligations and stimulates productive trans-national institutional design.