Effects of Self-Esteem and Depression on Abnormal Eating Behavior among Korean Female College Students: Mediating Role of Body Dissatisfaction

Body dissatisfaction is widely acknowledged to exert considerable impact on abnormal eating behavior. Previous studies that reported the mediating role of body dissatisfaction between psychological variables and abnormal eating behavior mostly used western samples. The aim of this study was to investigate the direct and indirect association of psychological factors (i.e., self-esteem and depression) on abnormal eating behavior on a Korean sample. In addition, we examined a possible mediating effect of body dissatisfaction in this relationship. A sample of 502 Korean female college students enrolled in a private university participated in this cross-sectional study. Results indicated that self-esteem and depression did not have direct impacts on abnormal eating behavior. However, they did have indirect effects through the mediating factor, body dissatisfaction. Our findings suggest that students who have low self-esteem and high depression are likely to have higher levels of body dissatisfaction, and this, in turn, tends to be associated with greater abnormal eating behavior. Identification of this path has clinical implications in the development of programs to prevent abnormal eating behaviors among young female college students.     

Narcissistic personality and risk perception among Chinese aviators: The mediating role of promotion focus

Optimism bias is a crucial feature of risk perception that leads to increased risk‐taking behaviour, which is a particularly salient issue among pilots in aviation settings due to the high‐stakes nature of flight. The current study sought to address the roles of narcissism and promotion focus on optimism bias in risk perception in aviation context. Participants were 239 male flight cadets from the Civil Aviation Flight University of China who completed the Narcissistic Personality Inventory‐13, the Work Regulatory Focus Scale, and an indirect measure of unrealistic optimism in risk perception, which measured risk perception for the individual and the risk assumed by other individuals performing the same task. Higher narcissism increased the likelihood of underestimating personal risks, an effect that was mediated by high promotion focus motivation, such that high narcissism led to high promotion focus motivation. The findings have important implications for improving the accuracy of risk perception in aviation risks among aviators.     

视觉空间关系识别中的认知加工特性

通过两个实验分别检测 2 0名飞行员和 10名老年被试及其相应控制组的视觉空间关系识别中的认知加工水平 ,旨在探讨视觉空间关系识别中的类别关系和数量关系加工子系统所表现出的认知特性。研究结果表明 ,在参与视觉空间关系判断的两个典型加工子系统中 ,负责数量 (坐标 )空间关系判断的加工子系统既可随系统训练而表现出功能增强的练习效应 ,也可随年老过程而发生功能衰减的年龄效应。相对而言 ,涉及类别空间关系判断的加工子系统则较少受到练习和年老化因素的影响。研究提示 ,由于受大脑神经解剖结构特点以及加工任务性质的影响 ,数量空间关系加工子系统更多地表现出了认知加工的可塑性和易变性特点 ,而类别空间关系加工子系统则表现出相对的稳定性或可塑性较低的认知特性     

细胞因子在糖尿病肾病中的研究进展

糖尿病肾病是糖尿病常见的并发症,其发病机制尚未完全明了。细胞因子可影响糖代谢障碍和血液循环。本文就细胞因子与糖尿病肾病发病关系密切的肿瘤坏死因子-α、肝细胞生长因子、转化生长因子-β、血管内皮生长因子、结缔组织生长因子、白细胞介素、内皮素和一氧化氮等因子的研究进展作一综述。     

瘦素及其受体在消化道肿瘤研究中的应用

瘦素是肥胖肥胖基因编码的产物,与其受体结合发挥其生物学作用.具有促进细胞增殖分化、增加细胞侵袭性、促进血管形成和调节机体免疫等作用.流行病学调查和基础研究证实,Leptin与肿瘤的发生密切相关,肿瘤的发生、发展和转归在很大程度上依赖于新生血管的形成.本文综述了瘦素及其受体在消化道肿瘤研究中的进展.     

细胞因子在糖尿病肾病中的研究进展

糖尿病肾病是糖尿病常见的并发症,其发病机制尚未完全明了.细胞因子可影响糖代谢障碍和血液循环.本文就细胞因子与糖尿病肾病发病关系密切的肿瘤坏死因子-α、肝细胞生长因子、转化生长因子-β、血管内皮生长因子、结缔组织生长因子、白细胞介素、内皮素和一氧化氮等因子的研究进展作一综述.     

品牌信任结构及其测量研究

品牌信任就是在风险情境下,消费者基于对品牌品质、行为意向及其履行承诺的能力的正面预期而产生的认可该品牌的意愿。在文献研究和关键事件访谈的基础上,通过筛选条目、形成初步问卷、预测验和正式测验等程序,经探索性因素分析和验证性因素分析,发现品牌信任由品牌品质信任、品牌善意信任和品牌能力信任等三个维度构成。用于测量品牌信任的量表由21个条目组成,量表具有较好的信度和效度。     

Development of the Real-Time Subjective Emotionality Assessment (RTSEA) system

A new Real-Time Subjective Emotionality Assessment (RTSEA) system was developed for this study. The system is composed of two parts: an emotionality input and evaluation parts. An experiment was conducted in order to investigate the effectiveness of the RTSEA system. The present study compared Galvanic Skin Response (GSR) with the RTSEA by presenting 28 subjects with pictures that aroused either positive or negative emotion. Following the experiment, a subjective assessment using a questionnaire was given to the same subjects. According to the correlation coefficients, changes of the RTSEA had strong correlations with the changes of the GSR. Also, the questionnaire results showed marked similarity to the average responses of the RTSEA. In conclusion, the most remarkable characteristic of the present system is that it not only assesses the average emotionality when stimuli are presented, but also shows the trend of change in emotionality over time.     

小学儿童尊重行为与人格、班级环境的关系

以356名北京市两所小学三、四、五年级的小学儿童为被试,采用自编的小学儿童尊重行为问卷、国内修订的学生人格五因素问卷和班级环境问卷,考察小学儿童尊重行为的特点,并探讨人格和班级环境对尊重行为的影响.结果发现:(1)小学儿童的总体尊重行为和其中的理解欣赏具有显著的性别差异和城郊差异;(2)尊重行为与人格各维度具有显著的相关,与班级环境中除了竞争气氛之外的其他四个维度都有显著相关;(3)人格的宜人性、谨慎性、情绪性和开放性以及班级环境中的同学关系能够显著预测尊重行为,人格和班级环境的不同维度对于尊重行为不同维度具有不同的预测力;(4)小学儿童的班级环境可以归为三种类型:积极型、一般型和问题型,不同类型的班级环境在尊重行为上具有显著差异.     

食物线索注意偏向及其神经机制

与其他类型的刺激相比, 个体会优先注意食物相关刺激, 即对食物刺激的注意偏向。对影响食物线索注意偏向个体因素研究的分析发现：(1)在状态因素中, 饥饿以及与自我威胁有关的、唤起强度大的负性情绪对食物线索注意偏向有增强作用, 这在注意加工的早期和晚期都有体现; (2)在特质因素中, 行为研究发现, 相比于体重正常个体和非限制性饮食者, 超重/肥胖个体以及唤起节食目标的成功限制性饮食者没有更强的注意偏向, 但是, ERP研究发现, 在注意加工的早期阶段, 就出现了特质因素对食物线索注意偏向的影响; (3) fMRI研究发现, 对食物线索的注意过程伴随着脑岛、眶额叶皮层等与奖励相关的脑区及视觉注意网络的激活。未来研究需要：(1)从动态角度研究注意偏向, 进一步提高测量的信度; (2)使用专门的范式探究个体因素影响注意偏向的神经机制; (3)严格分离不同状态因素; (4)对被试进行严谨筛选和划分, 做好被试间的对比研究。