Real men are made,not born! Incidental exposure to energy drinks may promote men's tolerance of physical pain

The energy drink market has grown exponentially since the debut of Red Bull. Advertising of energy drinks tends to reinforce an emphasis on masculine identification. However, no previous study has addressed the symbolic effect of energy drinks on pain tolerance, that is, a particular masculine characteristic. We conducted a priming‐based experiment to show that energy drink primes elevated men's pain tolerance. Induced conformity to masculinity norms mediated the priming effect of energy drinks on pain tolerance. These findings suggest that mere reminders of masculinity‐related products can lead men to behave accordingly in seemingly irrelevant domains (i.e., pain tolerance). Besides distraction and placebo treatment, the connection between a symbolic masculinity prime and greater tolerance of pain may shed lights on an alternative route for pain control.     

Prevalence of depressive symptoms and its correlates among medical students in China: a national survey in 33 universities

We conducted a national survey among medical students in China to estimate the prevalence of depressive symptoms and explore associated risk factors based on an established questionnaire composed of demographic information, life events in the past four weeks before survey, and the validated Chinese version of the 21-item Beck’s Depression Inventory (BDI). The mean age of enrolled 9010 students was 20.7 (standard deviation: 1.6) years. BDI scores indicated that 19.9% had depressive symptoms based on the cut-off score of 14. Socioeconomic factors and student characteristics such as male sex, low monthly income per capita, father’s poor education background, and higher year of study were associated with higher prevalence of depressive symptoms among medical students. Students who studied in comprehensive universities were more likely to have depressive symptoms compared with those from medical universities. Habitual smoking and alcohol drinking, sleep deprivation, and hospitalization or medication for one week or more in the last four weeks also predisposed students to higher risk of depressive symptoms. Our results indicate that depressive symptoms are becoming a highly prevalent health problem among Chinese medical students. Primary and secondary prevention should be prioritized to tackle this issue based on potential risk factors.     

快慢读者利用语境信息的差异：加工深度的作用

通过主题扫描和阅读理解两种加工深度不同的任务,考察快慢读者预测性效应差异的来源及加工深度在其中发挥的作用。被试在两种任务情境下阅读分别包含高低预测性目标词的96个句子框架,记录其眼动轨迹。结果显示：预测性效应仅在阅读理解任务中出现,快速读者在早期眼动指标上就表现出了预测性效应,慢速读者在晚期眼动指标上才表现出预测性效应。结果表明：加工深度调节快慢读者预测性效应的大小;在自然阅读情境下快慢读者的预测性效应表现符合预测编码框架假设。     

心理病理学视野中的完美主义自我展示

完美主义自我展示是完美主义者在人际过程中为向他人展示自己非现实的、固定化的完美形象而进行的印象整饰过程。本文在简要阐述完美主义特征与澄清完美主义自我展示概念基础上,重点梳理和剖析了完美主义自我展示对抑郁、焦虑、社交恐惧、饮食障碍及人格障碍等常见心理病理现象的影响,并分析了其影响机制,最后,就深化该领域的研究提出了总结和展望。     

Pinning of grain boundary migration by a coherent particle

We studied single-particle pinning of grain boundary (GB) migration during grain growth. A phase-field model was formulated to simulate the pinning by a coherent particle and validated quantitatively by comparison with analytical prediction. A study of GB migration velocity using this model revealed that second-phase coherent particles have a previously unknown restraining effect over the whole of the GB-particle interaction range, which is qualitatively different from the interaction between GB and incoherent particles.     

Microwave-dielectric and magnetic properties of Ta-doped BiFeO3 nanopowders

BiFe_{1? x} Ta _x O₃ (x = 0, 0.05, 0.1) nanopowders have been fabricated by a simple sol–gel method. Dielectric measurements at microwave frequencies (2–18 GHz) were made using a vector network analyser. Without tantalum, the BiFeO₃ nanopowder presents a relaxation-like response with a characteristic frequency of 15 GHz, which can be associated with an overdamped process. The Ta-doped nanopowders, however, show resonant behaviour with resonant frequencies of 12.5 and 14.6 GHz. The intensity of the resonant peak near 14.6 GHz decreases with increasing Ta addition. This behaviour is associated with a damped resonance process. Room-temperature magnetic measurements indicate that the addition of Ta influences the magnetic properties of the BiFeO₃ nanopowders, with BiFe_0.95Ta_0.05O₃ having the strongest ferromagnetism with a saturation magnetisation M _s of about 0.05 µ_B/Fe. The origin of the enhanced ferromagnetism is possibly associated with the distortion of the oxygen octahedral by the Ta substitution or/and the statistical distribution of Fe³⁺ and Fe²⁺.     

Psychological contracts and innovative behavior: a moderated path analysis of work engagement and job resources

This study explored the relationships between psychological contract types and innovative behavior. We focused on the mediating effect of work engagement and the moderating effect of job resources (organizational and social resources). Participants were 267 dyads of research and development engineers and their supervisors from 30 high‐tech companies. Moderated path analysis was used to test the hypotheses. Findings showed that: (a) work engagement fully mediated the negative relationship between transactional contracts and innovative behavior; in addition, it also fully mediated the positive relationship between relational contracts and innovative behavior; and (b) job resources attenuated the former and strengthened the latter mediating effects. These findings contribute to understanding how, why, and when psychological contract types lead to innovative behavior via work engagement.     

决策中的过程追踪技术:介绍与展望

在过去50年的决策研究中,随着对核心问题的深入探索和信息技术的发展,决策过程信息得到了越来越多的重视.过程研究技术主要包括鼠标实验室技术、眼动技术及新提出的决策移窗技术.鼠标实验室技术和眼动技术已被用于解决多种决策问题.决策移窗技术结合了前两种技术的优势,其适用范围需在日后研究中进行更多探索.在未来的研究中,多种技术的结合使用将有助于回避单一技术的缺陷,分离研究方法对于被试行为的影响,提高研究效度.     

基于贡献原则的幼儿分配公平性

分配公平性是指个体如何以公平的方式对资源进行分配, 其主要依据3个原则：贡献(equity)、平等(equality)和需要(need)。最新研究表明, 幼儿很早就已经具有基于贡献原则的分配公平性判断与行为, 双加工理论对于该研究结果能够给出更为适当的解释, 心理理论与情境卷入水平分别从认知和情绪方面对幼儿分配公平性的发展有着重要影响。未来研究应注重研究内容的具体化, 对幼儿基于贡献原则的分配公平性发展特点、相关影响因素及其内部动机进行深入探究。