Personal Relative Deprivation Boosts Materialism

Five studies investigated the relationship between personal relative deprivation and materialism. Study 1 was a cross-sectional survey that revealed a positive association between trait relative deprivation and materialism. In Studies 2a and 2b, we found that relative deprivation, as induced by unjust government policies in an imaginary scenario, increased individuals’ preferences for making more profit than others. Individuals may experience relative deprivation due to unjust treatment or other factors. Study 3 manifested that sense of relative deprivation, resulting from either being treated unjustly or not, gave rise to materialistic desires. In Study 4, we found that relative deprivation influenced materialistic aspirations, above and beyond negative outcomes. Moreover, the impact of relative deprivation could be generalized to aspirations for fame.     

Tensile deformation mechanisms of the hierarchical structure consisting of both twin-free grains and nanotwinned grains

A series of large-scale molecular dynamics simulations have been performed to investigate the tensile properties and atomistic deformation mechanisms for the nanostructured Cu with three typical microstructures: the hierarchical structure consisting of both twin-free grains (d?=?70?nm) and grains with bundles of smaller nanotwins (d?=?70?nm, λ?=?10?nm), the fully nanograined structure and the fully nanotwinned structure. The average flow stress of the hierarchically structure is found to be higher than that calculated by rule of mixture. As compared with that of fully nanograined structure, the strength for the twin-free grains in the hierarchical structure is promoted and gives extra hardening due to the increased dislocation density and dislocation behaviours. It is also found that the nanotwin bundles are more deformable than the twin-free grains in the hierarchical structure according to the deviatoric strain invariant contour. This indicates that the fully nanograined structure cannot only be strengthened to a higher level, but also obtain better ductility by embedded with stronger bundles of smaller nanotwins. Thus, a superior strength–ductility synergy could be obtained in this kind of hierarchical structures, and this novel strategy has also been implemented in bulk austenitic steels or copper by recent experiments.     

Vortex dynamics in La1.86Sr0. 14CuO4 studied by magnetoresistivity

Abstract

Vortex dynamics in La_1.86Sr_0.14CuO₄ have been studied by the measurement of ρ_c ^//i (T, H), where ρ_c ^//i is the c-axis resistivity for H//i (i = c or a-b). We argue that, at temperatures higher than the irreversibility temperature T _irr, the usual vortex picture breaks down owing to the thermal motion of vortices, resulting in a T- and T _in-dependent anisotropic parameter γ. After taking into account the dependence of γ on T and T _irr, we show that at each given temperature we can rescale the ρ_c ^//a-b (T, H) data onto the corresponding ρ_c ^//c (T, H) curves. This scaling property clearly indicates that the Lorentz-force-free mechanism is responsible for ρ_c ^//a-b (T, H). Furthermore, we also show that the measured ρ_c ^//a-b (T, H) data can be explained in terms of the recently developed extended Josephson coupling model which is verified by rescaling ρ_c ^//a-b (T) data for various fields onto a single curve.     

Functional connectivity abnormalities during contextual processing in schizophrenia and in Parkinson’s disease

Functional connectivity was evaluated in patients with schizophrenia (SC) and in patients with Parkinson’s disease (PD) during the performance of a local contextual processing paradigm, to investigate the proposition that functional disconnection is involved with contextual processing deficits in these populations. To this end, we utilized event-related EEG signals, synchronization likelihood and graph theoretical analysis. Local context was defined as the occurrence of a predictive sequence of stimuli before the presentation of a target event. In the SC patients, we observed a decrease in path length (L) in the beta band, for the predictive sequence and for predicted and random targets, compared with controls. These abnormalities were associated with weaker frontal-temporal-parietal connections. In the PD patients we found longer L (theta band) for predicted targets, and higher cluster coefficients for both the predictive sequence (theta band) and predicted targets (alpha and theta bands), compared with controls. Detection of predicted targets was associated with weaker frontal-parietal connections in PD. No group differences were found for randomized standard stimuli in both SC and PD patients. These findings provide evidence of task-specific functional connectivity abnormalities within frontal networks during local contextual processing.     

羞怯与互联网使用的关系

羞怯是在面对新的社会环境和/或意识到社会评价的情境中个体的紧张和不适的一种性格特征。羞怯会阻碍人际交往,互联网的出现可以弥补羞怯的个体在面对面交往时的紧张或不适。互联网的使用对羞怯个体会有双重影响,积极方面的影响可以降低羞怯水平,消极方面的影响会使羞怯个体网络成瘾。未来研究中,需要进一步研究羞怯与互联网使用之间的中介或调节变量,考察羞怯与互联网使用的关系,深入了解二者的关系。     

情感适应的心理机制:AREA模型

情感适应是指对重复或连续刺激的情感反应变弱的心理过程.在解释情感适应的心理机制和过程的理论中,最有影响的是AREA模型.该模型认为个体注意到与自身相关且难以解释的事件时,对事件作出情感反应并试图解释或理解;若解释成功,注意力会减弱进而适应该事件,对应的情感反应也会变弱.大量关于消极事件与积极事件的研究为AREA模型提供了实证支持.未来研究需要从影响情感适应速度的因素、跨文化研究、适应轨迹的时间精确性以及干预措施等方面进一步探索.     

儿童同伴尊重的发展及社交领导性的影响: 三年追踪

对285名小学三年级和四年级儿童进行了连续三年的追踪调查,分析了儿童同伴尊重发展趋势及其在群体间的差异,探讨了社交领导性在儿童同伴尊重发展中的预测作用。结果表明：（1）童年中后期儿童与同伴之间的获得尊重与表现尊重具有显著增长趋势;（2）三年间女孩的表现尊重均高于男孩但增长速度无差异;女孩的获得尊重增长速度高于男孩;（3）儿童的社交领导性能够显著正向预测儿童同伴尊重的发展趋势。     

DTC基因检测的伦理思考

直接面向消费者提供基因检测服务称为Direct-to-Consumer(DTC)基因检测。随着人类基因组计划测序工作的完成,DTC基因检测服务行业逐渐发展起来,它的出现与人们日益提高的健康需要相适应。但与此同时,一些社会伦理和法律问题也随之产生。对DTC基因检测的现状以及各国对其认可度进行阐述,剖析DTC基因检测存在的伦理问题,如隐私问题,有限的预测价值,检测信息的准确性,检测结果对受试者造成的负面心理影响,以及由此产生的基因歧视和卫生保健资源的浪费等。     

Gender Differences in Coping Styles of Chinese Military Officers Undergoing Intensive Training

This study investigated gender differences in anxiety and coping styles under the stress of intense military training. We surveyed Chinese female (n = 470) and male (n = 379) military officers who were surveyed during the third month of a 10-month intensive training program. Results indicated that state and trait anxiety were highly correlated in both women and men. In general, female officers had higher levels of anxiety, greater negative coping tendencies, and less perceived self-efficacy than their male counterparts. When compared with the norm, both women and men had significantly more positive coping strategies. A hierarchical multiple regression analysis showed factors that influenced male and female state anxiety. Avoidance, which was chosen by women more often than men, in general was less useful for female officers. The most common positive coping style for female officers was problem solving, whereas for men it was help seeking. We suggested that even female officers with lower mental health levels than their male counterparts made active cognitive changes to their coping styles when undergoing intense military training.