Common magnitude representation of fractions and decimals is task dependent

Although several studies have compared the representation of fractions and decimals, no study has investigated whether fractions and decimals, as two types of rational numbers, share a common representation of magnitude. The current study aimed to answer the question of whether fractions and decimals share a common representation of magnitude and whether the answer is influenced by task paradigms. We included two different number pairs, which were presented sequentially: fraction–decimal mixed pairs and decimal–fraction mixed pairs in all four experiments. Results showed that when the mixed pairs were very close numerically with the distance 0.1 or 0.3, there was a significant distance effect in the comparison task but not in the matching task. However, when the mixed pairs were further apart numerically with the distance 0.3 or 1.3, the distance effect appeared in the matching task regardless of the specific stimuli. We conclude that magnitudes of fractions and decimals can be represented in a common manner, but how they are represented is dependent on the given task. Fractions and decimals could be translated into a common representation of magnitude in the numerical comparison task. In the numerical matching task, fractions and decimals also shared a common representation. However, both of them were represented coarsely, leading to a weak distance effect. Specifically, fractions and decimals produced a significant distance effect only when the numerical distance was larger.     

Integration of spatial information across vision and language

Three experiments investigated whether spatial information acquired from vision and language is maintained in distinct spatial representations on the basis of the input modality. Participants studied a visual and a verbal layout of objects at different times from either the same (Experiments 1 and 2) or different learning perspectives (Experiment 3) and then carried out a series of pointing judgments involving objects from the same or different layouts. Results from Experiments 1 and 2 indicated that participants pointed equally fast on within- and between-layout trials; coupled with verbal reports from participants, this result suggests that they integrated all locations in a single spatial representation during encoding. However, when learning took place from different perspectives in Experiment 3, participants were faster to respond to within- than between-layout trials and indicated that they kept separate representations during learning. Results are compared to those from similar studies that involved layouts learned from perception only.     

A new rank correlation coefficient with application to the consensus ranking problem

The consensus ranking problem has received much attention in the statistical literature. Given m rankings of n objects the objective is to determine a consensus ranking. The input rankings may contain ties, be incomplete, and may be weighted. Two solution concepts are discussed, the first maximizing the average weighted rank correlation of the solution ranking with the input rankings and the second minimizing the average weighted Kemeny–Snell distance. A new rank correlation coefficient called τ_x is presented which is shown to be the unique rank correlation coefficient which is equivalent to the Kemeny‐Snell distance metric. The new rank correlation coefficient is closely related to Kendall's tau but differs from it in the way ties are handled. It will be demonstrated that Kendall's τ_b is flawed as a measure of agreement between weak orderings and should no longer be used as a rank correlation coefficient. The use of τ_x in the consensus ranking problem provides a more mathematically tractable solution than the Kemeny–Snell distance metric because all the ranking information can be summarized in a single matrix. The methods described in this paper allow analysts to accommodate the fully general consensus ranking problem with weights, ties, and partial inputs. Copyright © 2002 John Wiley & Sons, Ltd.     

Culture,psychological proximity to the past and future,and self-continuity

The present research explores how culture influences individuals’ psychological proximity to the past and future, which may predict differences in perceived self-continuity across time. In Studies 1 and 2, we hypothesized and found that Chinese participants saw the past and future as more connected and subjectively closer to the present compared to Euro-Canadians. Following this, we expected and found in Studies 3 and 4 that Chinese participants perceived greater self-continuity over time than Euro-Canadians. Additionally, perceived closeness to the past mediated the effect of culture on past–present self-continuity, which subsequently predicted present–future self-continuity. Study 5 further documented a causal effect of perceived distance to the past on self-continuity. These results suggest that cultural differences in temporal attention to the past and future play a pivotal role in people's sense of self-continuity across time. This has important implications for temporal focalism, intertemporal discounting, and social interactions between Chinese and Euro-Canadians.     

Challenge your stereotypes! Human Library and its impact on prejudice in Poland

Human Library is a public event aimed at reducing stereotypes and prejudices, in the form of an interactive, contact‐based intervention. It employs the logic of a regular library yet with readers “borrowing” Living Books, which are real people representing various minority groups. Readers engage in 30‐min conversations, during which they can challenge their stereotypes and widen their scope of knowledge and understanding. This pre‐post intervention study examined the effectiveness of the Human Library (held in Wroc?aw, Poland) in reducing social distance towards Roma, Muslims, dark‐skinned, and transgender people, as well as in decreasing homonegativity. Also, we measured whether participation in the Human Library changes individual attitudes towards diverse workgroups. We found that the Human Library decreased social distance towards Muslims. Also, the more Living Books that the participants “read,” the bigger the shift in their social distance towards Muslims. Furthermore, we observed an increase in positive affective attitude towards working in diversified groups, as a result of participation in the event. The study serves as partial support for the effectiveness of the Human Library in altering one's attitude towards minority groups and diversity. The intervention is discussed as a promising but not yet entirely understood tool to improve intergroup relations.     

Inside bilingualism: Language background modulates selective attention to a talker's mouth

Previous findings indicate that bilingual Catalan/Spanish‐learning infants attend more to the highly salient audiovisual redundancy cues normally available in a talker's mouth than do monolingual infants. Presumably, greater attention to such cues renders the challenge of learning two languages easier. Spanish and Catalan are, however, rhythmically and phonologically close languages. This raises the possibility that bilinguals only rely on redundant audiovisual cues when their languages are close. To test this possibility, we exposed 15‐month‐old and 4‐ to 6‐year‐old close‐language bilinguals (Spanish/Catalan) and distant‐language bilinguals (Spanish/”other”) to videos of a talker uttering Spanish or Catalan (native) and English (non‐native) monologues and recorded eye‐gaze to the talker's eyes and mouth. At both ages, the close‐language bilinguals attended more to the talker's mouth than the distant‐language bilinguals. This indicates that language proximity modulates selective attention to a talker's mouth during early childhood and suggests that reliance on the greater salience of audiovisual speech cues depends on the difficulty of the speech‐processing task.     

社会距离与分配差距对儿童有利不公平厌恶的影响

选取60名8-10岁儿童,采用迫选式独裁者游戏,考察个体与博弈对象的社会距离以及分配差距对儿童有利不公平厌恶的影响。结果发现：（1）在有利不公平条件下,与博弈对象社会距离越近,儿童对不公平分配提议的拒绝率越高;（2）分配差距越大,儿童对不公平分配提议的拒绝率越高;（3）社会距离和分配差距交互作用显著,在中等分配差距条件下,儿童对不公平分配提议拒绝率的社会距离效应最为明显。结果表明,社会距离和分配差距对儿童有利不公平厌恶有显著影响,在中度分配差距下社会距离具有更加明显的调节作用。     

Visualising intimacies: The circulation of digital images in the Trinidadian context

This article examines images circulated through mobile media to emphasise the emotion work invested into familial relationships that are defined by place. Drawing on ethnographic fieldwork conducted in Trinidad, the article contributes a cross-cultural perspective to literature in digital visual communication and digital media in family relationships that has typically focused on peer-to-peer relationships between youth or that has focused on nuclear households in predominantly Western contexts. The consequences of uses of digital media platforms are strongly intertwined with the category of relationship (mother and daughter, or couples for example), their cultural inflections, relationship hierarchies and the life-stages of individuals. Digital visual communication functions to navigate, maintain and acknowledge relationships that varies across different platforms. The more public uses of images over Facebook to the more private circulation of images over WhatsApp provide examples that illustrate positive aspects of intimacy through constant contact as well as ambivalent feelings of obligation to reciprocate communication compelled by the availability afforded by mobile media. This article advances the understanding of the relationship between emotions, intimacy and mobile media by revealing how norms, ideals and expectations of familyhood and digital practices that are often essentialised are context-driven and specific.     

心理距离视角下的行为决策

决策是指决策者对将产生不同结果的多个备择方案的评估与选择。无论决策结果涉及的是金钱、健康、环境或是其他事物,它们都同时具有多重属性,如发生的概率,发生的时间,发生的地点,发生在谁身上等,这些属性会和结果量一起影响人们对结果效用的评价和对备择方案的选择。以往有关风险决策、跨期决策和社会决策的理论分别探究结果的概率属性、时间属性和人际属性如何与结果量一起共同决定人们的效用评估与选择,并提出了各自不同的决策模型。然而,心理距离理论则认为,决策结果的概率、时间、空间、人际等属性本质上都可被表征为结果在决策者心中的心理距离。这意味着风险、跨期和社会决策模型有可能经由心理距离而得以统一。近几年来,众多研究围绕这一思想开展了一系列实验研究,分析了各种心理距离的同质性,探索了基于心理距离的心理折扣现象及其规律,探讨了时间、概率、人际、空间距离对个体决策的影响。在此基础上,未来研究还应更加重视对多特征决策的研究,探索心理距离之间的替换率和通币问题,探究心理距离的本质及其整合方式,以期形成统一的决策理论模型。     

Distancing the present self from the past and the future: Psychological distance in anxiety and depression

Humans show a systematic tendency to perceive the future as psychologically closer than the past. Based on the clinical hypothesis that anxiety would be associated more with future threat life events, whereas depression with past loss events, here we explored whether people with anxiety- and depression-related personality traits perceive differently the psychological distance of temporal events. Results showed that the common tendency to perceive the future as psychologically closer than the past is exaggerated in individuals with anxiety-related personality traits, whereas this asymmetry drastically shrinks in individuals with depression-related personality traits. Beyond substantiating the hypothesis that the past and the future are differently faced by people with depression- and anxiety-related personality traits, the present findings suggest that temporal orientation of one’s self may be greatly altered in anxiety and depression.