Phase field microelasticity theory of dislocation dynamics in a polycrystal: Model and three-dimensional simulations

A three-dimensional multidislocation system in a polycrystal under applied stress is treated as a particular case of the phase field microelasticity theory of multivariant stress-induced martensitic transformations in polycrystals. This approach reduces the problem of the evolution of a dislocation system to a solution of the nonlinear integrodifferential Ginzburg-Landau equation. In this formalism, the elastic interaction between dislocations and the elastic coupling between grains are taken into consideration through exact analytical solution of the elasticity problem. The dislocation reactions, such as multiplication and annihilation, are taken into account automatically. The dislocations are 'free' to choose the optimal evolution path. Examples of three-dimensional computer simulations are considered.     

The beneficial effect of Tai Chi on self‐concept in adolescents

Previous research has documented the beneficial effect of Tai Chi, but most of the studies focused on elders and patients with specific health conditions. The aim of the study was to test whether Tai Chi can help to improve self‐concept in adolescents with a longitudinal study. The sample comprised 160 students from a Chinese middle school; half of students formed the experimental group and the rest formed the control group. A 1‐year Tai Chi intervention was delivered in 60‐minute sessions, five times a week. Both groups were instructed to complete the measure of self‐concept at the beginning and end of the intervention. Statistical analysis shows the significant reduction of good behaviour, intellectual and school status, popularity and anxiety in the experimental group compared with the control group. The results suggest that the Tai Chi intervention could improve self‐concept in adolescents.     

Chinese–English bilinguals processing temporal–spatial metaphor

The conceptual projection of time onto the domain of space constitutes one of the most challenging issues in the cognitive embodied theories. In Chinese, spatial order (e.g., “大树前”/da shu qian/, in front of a tree) shares the same terms with temporal sequence (三月前”, /san yue qian/, before March). In comparison, English natives use different sets of prepositions to describe spatial and temporal relationship, i.e., “before” to express temporal sequencing and “in front of” to express spatial order. The linguistic variations regarding the specific lexical encodings indicate that some flexibility might be available in how space–time parallelisms are formulated across different languages. In the present study, ERP (Event-related potentials) data were collected when Chinese–English bilinguals processed temporal ordering and spatial sequencing in both their first language (L1) Chinese (Experiment 1) and the second language (L2) English (Experiment 2). It was found that, despite the different lexical encodings, early sensorimotor simulation plays a role in temporal sequencing processing in both L1 Chinese and L2 English. The findings well support the embodied theory that conceptual knowledge is grounded in sensory-motor systems (Gallese and Lakoff, Cogn Neuropsychol 22:455–479, 2005). Additionally, in both languages, neural representations during comprehending temporal sequencing and spatial ordering are different. The time–spatial relationship is asymmetric, in that space schema could be imported into temporal sequence processing but not vice versa. These findings support the weak view of the Metaphoric Mapping Theory.     

Do Guyanese mothers' levels of warmth moderate the association between harshness and justness of physical punishment and preschoolers' prosocial behaviours and anger?

This study assessed the moderating role of Indo‐Guyanese mothers' warmth and affection on the associations between harshness and justness of physical punishment and prosocial behaviours and anger in preschoolers. One hundred and thirty‐nine rural Indo‐Guyanese mothers filled out Rohner's Parental Acceptance–Rejection (PARQ) and Physical Punishment Questionnaires (PPQ). Teachers provided assessments of children's prosocial behaviours and anger in preschool settings. Maternal warmth did not moderate the relationship between harshness of physical punishment and children's prosocial behaviours and anger, but it did moderate the relationship between justness of physical punishment and prosocial behaviours for sons as well as the association between justness of physical punishment and anger for daughters. In Caribbean societies where harsh punishment is normative, maternal warmth may work more effectively with justness, and not with harshness of physical punishment, to lower negative childhood behavioural outcomes.     

同伴团体对青少年问题行为的影响：一项基于社会网络分析的研究

以675名初中和高中学生为被试,采用社会网络分析方法,获得506名青少年在其班级中的网络中心度,并确定他们所属的同伴团体,在此基础上考察同伴团体的行为规范对其问题行为的影响。结果发现：（1）在控制了班级层次的问题行为水平和其他相关变量后,同伴团体的问题行为水平能够正向预测青少年自身的问题行为;（2）青少年在同伴团体内部的地位能负向预测青少年的问题行为,青少年在班级社交网络中的度数中心度能正向预测其问题行为,而中介中心度能负向预测其问题行为;（3）交互作用分析表明：同伴团体的问题行为水平主要对低中介中心度的青少年产生显著影响;仅在问题行为水平较高的同伴团体中,青少年的度数中心度正向预测其问题行为。     

Individual Differences in Accurately Judging Personality From Text

This research examines correlates of accuracy in judging Big Five traits from first‐person text excerpts. Participants in six studies were recruited from psychology courses or online. In each study, participants performed a task of judging personality from text and performed other ability tasks and/or filled out questionnaires. Participants who were more accurate in judging personality from text were more likely to be female; had personalities that were more agreeable, conscientious, and feminine, and less neurotic and dominant (all controlling for participant gender); scored higher on empathic concern; self‐reported more interest in, and attentiveness to, people's personalities in their daily lives; and reported reading more for pleasure, especially fiction. Accuracy was not associated with SAT scores but had a significant relation to vocabulary knowledge. Accuracy did not correlate with tests of judging personality and emotion based on audiovisual cues. This research is the first to address individual differences in accurate judgment of personality from text, thus adding to the literature on correlates of the good judge of personality.     

A Theory of Necessities

Journal of Philosophical Logic - We develop a theory of necessity operators within a version of higher-order logic that is neutral about how fine-grained reality is. The theory is axiomatized in...     

Frequentist Model Averaging in Structure Equation Model With Ordinal Data

Psychometrika - In practice, it is common that a best fitting structural equation model (SEM) is selected from a set of candidate SEMs and inference is conducted conditional on the selected model....     

职业污名与离职倾向：牵连家人污名与家庭卷入的作用

职业污名对从业者的工作态度和工作行为有着重要影响。以往研究从个体职业身份的视角解释职业污名的作用, 忽略了从业者个体身份认同的多重属性。本研究基于身份边界理论, 提出职业污名会通过牵连家人污名这一机制影响从业者的离职倾向。另外, 这一机制的强弱取决于个体的家庭卷入程度。本研究通过对分属不同职业的384名从业者的3轮问卷调研发现, 家庭卷入调节了牵连家人污名在职业污名与离职倾向之间的中介作用。当个体的家庭卷入水平高时, 这一中介作用更强; 家庭卷入水平低时, 该中介作用更弱。本研究在理论上提出并检验了职业污名影响的新机制, 同时对实际管理工作提出了建议。     

Rawlsian and Confucian Distributive Justice and the Worst Off

Philosophia - In any complex human society, distinct persons may have strikingly different standards of living. Those who lead the most undesirable, poorest lives in society can be called the worst...