A first-principles study of the formation of θ′′ phase in Al–Cu alloys

The θ′′-Al₃Cu phase plays an important role in the precipitation process of Al–Cu alloys. This phase has a sandwich structure—every two {200}_Cu layers are separated by three {200}_Al layers. To analyse the formation mechanism of this structure, the elastic strain energy of the {200}_Cu and {200}_Al layers, and the chemical bonding energy that reflects the interaction between the electrons in Cu and neighbouring Al atoms are calculated and analysed by first-principles calculations, projected density of states and Bader analysis. Our computation results reveal that this sandwich structure is energetically preferred in the competition of elastic strain and chemical bonding energies. To minimise the elastic strain energy of {200}_Al and {200}_Cu layers, the {200}_Cu layers prefer being apart from each other, whereas the chemical bonding energy favours the opposite arrangement because the intermetallic bond between Al and Cu atoms may form through p-d hybridization.     

Birth of the cool: a two-centuries decline in emotional expression in Anglophone fiction

The presence of emotional words and content in stories has been shown to enhance a story’s memorability, and its cultural success. Yet, recent cultural trends run in the opposite direction. Using the Google Books corpus, coupled with two metadata-rich corpora of Anglophone fiction books, we show a decrease in emotionality in English-speaking literature starting plausibly in the nineteenth century. We show that this decrease cannot be explained by changes unrelated to emotionality (such as demographic dynamics concerning age or gender balance, changes in vocabulary richness, or changes in the prevalence of literary genres), and that, in our three corpora, the decrease is driven almost entirely by a decline in the proportion of positive emotion-related words, while the frequency of negative emotion-related words shows little if any decline. Consistently with previous studies, we also find a link between ageing and negative emotionality at the individual level.     

A Meta‐analytic and Conceptual Update on the Associations Between Procrastination and Multidimensional Perfectionism

The equivocal and debated findings from a 2007 meta‐analysis, which viewed perfectionism as a unidimensional construct, suggested that perfectionism was unrelated to procrastination. The present meta‐analysis aimed to provide a conceptual update and reanalysis of the procrastination–perfectionism association guided by both a multidimensional view of perfectionism and self‐regulation theory. The random‐effects meta‐analyses revealed a small to medium positive average effect size (r  = .23; k  = 43, N  = 10 000; 95% confidence interval (95% CI) [0.19, 0.27]) for trait procrastination and perfectionistic concerns and a small to medium negative average effect size (r  = ?.22; k  = 38, N  = 9544; 95% CI [?0.26, ?0.18]) for procrastination and perfectionistic strivings. The average correlations remained significant after statistically accounting for the joint variance between the two perfectionism dimensions via semi‐partial correlations. For perfectionistic concerns, but not perfectionistic strivings, the effects depended on the perfectionism measure used. All effects did not vary by the trait procrastination measure used or the respondent's sex. Our findings confirm that from a multidimensional perspective, trait procrastination is both positively and negatively associated with higher‐order perfectionism dimensions and further highlights the value of a self‐regulation perspective for understanding the cognitive, affective and behavioural dynamics that characterise these traits. Copyright © 2017 European Association of Personality Psychology     

Raising Salafī Children in the West

Despite the importance salafīs place on children’s education, this aspect of their discourse has hardly been studied. The present article examines how salafī jurists based in the Arab world, salafī imams based in the West and salafī authors of English-language children’s books conceptualize the norms for raising children, and what they believe should be done specifically to assure the virtuous Islamic upbringing of children in Western societies. Exploring issues ranging from what constitutes proper schooling to whether Muslim children may befriend non-Muslim children and whether it is permissible to celebrate birthdays, play foosball or play with dolls, the article analyses the educational challenges salafī communities in the West face as enclaves that resist both majority secular societies and the majority among Muslim minorities, and presents the nuances, and in some cases contestations, among salafī leaders as to how these challenges should be addressed and prioritized.     

青少年友谊关系质量与社交焦虑的相互影响:一项交叉滞后分析

采用问卷法和追踪设计,通过交叉滞后回归分析,考察初中三年期间698名青少年的友谊关系质量与社交焦虑的相互影响及其动态变化。结果发现,初二到初三期间,青少年友谊关系质量的喜爱-满意维度显著负向预测社交焦虑;初中三年期间,青少年社交焦虑显著负向预测友谊关系质量的喜爱-满意维度;但友谊关系质量的冲突维度与社交焦虑的相互预测作用不显著。这些结果表明,青少年友谊关系的喜爱-满意维度与其社交焦虑之间存在相互影响,而且该相互作用存在一定程度的动态变化。     

21世纪中国老年心理学研究:现状与未来

本文回顾了近40年中国老年心理学的研究成果,并从研究主题角度与美国老年心理学研究进行了比较。发现中国老年心理学主要聚焦于老年人心理健康研究,同时也在老年人家庭人际关系和社会支持领域研究有较为丰富的研究成果。但国内对老年人的认知能力、人格、情绪情感探讨较少,既缺少前沿的基础研究,也缺少对复杂能力、复杂情感等的系统研究。结合中国人口老龄化现实,本文提出了21世纪中国老年心理学的未来研究取向：基础研究和应用服务研究的双向结合,中国文化特色取向,个体-环境交互作用取向和个体差异取向。     

学思维网络活动对小学生创造性的影响:认知风格的调节作用

以89名小学生为被试,采用实验组对照组前后测实验设计,考察学思维网络活动对培养小学生创造性思维和创造性倾向的影响,以及认知风格的调节作用。结果发现：（1）学思维网络活动能有效促进小学生创造性思维以及创造性倾向的想象力和好奇心的发展;（2）学思维课堂活动和学思维网络活动对于培养小学生的创造性思维和创造性倾向具有一致的效果;（3）认知风格在学思维网络活动和学思维课堂活动对小学生创造性思维的影响中起调节作用：对于场依存学生,学思维网络活动能更大程度地提高其流畅性和独创性的表现。     

The just world hypothesis as an argumentative resource in debates about unemployment benefits

The concept of the “just world” is established as a key explanation for how people make sense of inequality so that those deemed to score high in belief in a just world are more likely to hold prejudicial beliefs and to blame people in poverty for their situations. However, this is an inadequate explanation for such complicated and controversial issues. To better understand talk about the just world and the controversial issue of the distribution of unemployment benefits (an issue of inequality), a discursive psychological approach to the just world is used. Therefore, a discourse analysis focusses on 2 feature length British televised discussions about benefit claimants called “The Big Benefit Row: Live” (Channel 5 3/2/2014) and “Benefits Britain: the Debate” (Channel 4 17/2/2014). The analysis demonstrates that people draw on both just and unjust world arguments simultaneously and also topicalise what counts as just so as to support their positions on unemployment benefits, rather than in the consistent way that just world theory would predict. It is therefore argued that the just world should be recast as a cultural value that facilitates arguments about benefits, rather than an internally held belief.     

Beyond differences between the body schema and the body image: insights from body hallucinations

The distinction between the body schema and the body image has become the stock in trade of much recent work in cognitive neuroscience and philosophy. Yet little is known about the interactions between these two types of body representations. We need to account not only for their dissociations in rare cases, but also for their convergence most of the time. Indeed in our everyday life the body we perceive does not conflict with the body we act with. Are the body image and the body schema then somehow reshaping each other or are they relatively independent and do they only happen to be congruent? On the basis of the study of bodily hallucinations, we consider which model can best account for the body schema/body image interactions.