骨科新进展与教学补充内容的选择

骨科新技术新理论发展迅速,而教科书的内容相对滞后,在教学中为兼顾新知识和教科书内容,采取适当补充短小精练内容的方法,对四肢骨折、脊柱、肿瘤等内容进行补充讲解,并在某些地方加入一些现代医学伦理方面的知识,使学生能更全面地了解骨科,而不增加学生的负担.     

Feeling bad and doing good: The effect of customer mistreatment on service employee's daily display of helping behaviors

Mistreatment by customers is a common occurrence for many frontline service employees. Although some evidence suggests that employees engage in dysfunctional workplace behaviors as a result of mistreatment, others studies have suggested that employees may cope with such negative experiences by helping others. Drawing on negative state relief theory, we conducted 2 studies to test these relationships and examine whether service employees cope with negative emotions arising from such daily customer mistreatment by engaging in helping others. In Study 1, daily surveys from 70 restaurant employees showed that daily customer mistreatment predicted the experience of negative moods the next morning, which, in turn, led to higher levels of coworker helping the next day. In Study 2, daily surveys from 54 retail employees showed that daily customer mistreatment led to higher customer helping the next day, but only when customer orientation was high. Our results further show that helping behavior was associated with elevated positive affective experiences and that the proposed relationships differ depending on whether customer mistreatment is measured at a daily or a cumulative perspective. Specifically, cumulative customer mistreatment over time decreased general helping. These findings are discussed in relation to employees' coping strategies towards acute and cumulative mistreatment.     

基于双因子模型的测验总分和维度分的合成方法

双因子模型可以同时包含一个全局因子和多个局部因子,在描述多维测验结构时有其独特优势,近些年应用越来越广泛。文章基于双因子模型,提出了4种合成总分和维度分的方法,分别是:原始分法,加和法,全局题目加权加和法和局部题目加权加和法,并采用模拟的方法,在样本量、测验长度、维度间相关变化的条件下考察了这些方法与传统多维IRT方法的表现。最后,通过实证研究对结果进行了验证。结果显示:(1)全局加权加和法和局部加权加和法,尤其是局部加权加和法合成的总分和维度分与真值最接近、信度最高。(2)在维度间相关较高,测验长度较长的条件下,局部加权加和法的结果较好,部分条件下甚至优于多维IRT法。(3)仅有局部加权加和法合成的维度分能够反应维度间真实的相关关系。     

Associations between sexual sensation seeking and AIDS-related knowledge,attitudes and behaviors among young men who have sex with men in China

Young men who have sex with men (YMSM) have become high risk groups for HIV infection in China. Recent researches suggest that sexual sensation seeking is significantly associated with AIDS-related knowledge, attitudes and behaviors, but the relationship is not clear in the field of YMSM in China. The present study aimed to evaluate the relationship between sexual sensation seeking and AIDS-related knowledge, attitudes, and behaviors among YMSM in China. A cross-sectional study was conducted in Wuhan, China from May to November 2013. 403 YMSM were recruited and 373 of them completed the questionnaire. Regression analyses indicated that YMSM with high sexual sensation seeking score are more likely to have low awareness of knowledge and negative attitude about condom use, as well as more risky sexual behaviors.     

Temporal and spectral dynamics underlying cognitive control modulated by task-irrelevant stimulus-response learning

Behavioral and recent neuroimaging findings have shown reversal of interference effects due to manipulating proportion congruency (PC), which suggests that task-irrelevant stimulus-response (S-R) associations are strengthened and applied to predict responses. However, it is unclear how the strengthened S-R associations are represented and applied in the brain. We investigated with a between-subjects PC paradigm of the Hedge and Marsh task using electroencephalography (EEG). The behavioral results showed the reversal of the conflict effects, suggesting that task-irrelevant S-R associations were strengthened and used to prepare responses. The EEG results revealed the PC-related reversal of the conflict effects in the frontocentral N2 and parietal P3b amplitudes. Time-frequency analyses showed more pronounced PC-related reversal of the conflict effects in theta band (4–8 Hz) activity in frontocentral sites. These results suggest that the strengthened S-R associations due to PC manipulation modulated cognitive control. Importantly, the amplitude of lateralized readiness potential was higher in the high-PC condition than in the low-PC condition, suggesting that the strengthened short-term-memory spatial S-R associations that modulated cognitive control were applied similarly to long-term-memory spatial S-R associations.     

内生意图性抑制:自我控制研究的新视角

行为抑制的"停止信号"多来自内生意图行为"是否做"决策过程最后时刻内生性否定指示(即内生意图性抑制),而非环境提前设定。因无法用行为指标(错误率、反应时)评估,需将"自由选择"范式结合f MRI、EEG等技术测量与之相关的脑神经、自主神经生理特点;此外,范式中加入的刺激阈下启动、情绪信息影响了内生意图性抑制的加工过程。未来从三个方面拓展研究:(1)明确背内侧额叶皮质的心理机制;(2)探索人格特质的影响;(3)"停止信号"内生日常化。     

大学生共情对利他行为的影响:一个有调节的中介模型

探究大学生共情、幸福感和神经质对利他行为的影响,为促进大学生利他行为提供依据。采用方便取样,选取辽宁省某高校选修课程学生273名,完成中文版人际反应指针量表、神经质人格问卷、幸福感指数量表和大学生利他行为问卷。结果显示:(1) 神经质在共情和利他行为之间起着部分中介作用,也就是说,共情既对利他行为产生直接影响,也通过神经质间接地影响着利他行为;(2) 幸福感是神经质部分中介共情和利他行为关系的调节变量。幸福感调节的是中介作用的后半路径,即共情通过神经质对利他行为的间接效应受到幸福感的调节。具体的说,相对于低幸福感的大学生,间接效应对于高幸福感的大学生更加显著。因此,共情对利他行为的影响是有调节的中介效应。研究结论对增强大学生利他行为有重要的理论价值和实践指导价值。     

心理咨询中工作同盟的发展模式与咨询效果

为了探索工作同盟在咨询过程中的发展模式, 采用Stiles等(2004)提出的4个变化特征参数(shape-of-change parameters)对30个个案的工作同盟在咨询过程中的发展变化进行描述。聚类分析的结果显示有3类工作同盟的发展模式, 分别是线性增长、线性下降和二次增长模式。不过, 3种发展模式、4个变化特征参数及同盟的破裂?修复片段对咨询效果均没有影响。比较咨询效果不同的当事人在工作同盟发展模式上的差异, 发现同一个发展模式对于不同的个案可能有着不同的含义, 咨询师在早期对同盟关系的处理与调控对咨询效果有着重要的影响。     

汉字部件水平的重复知盲效应

本研究采用不同部件特点的汉字材料考察在汉字部件水平的重复知盲效应。实验1探究在一组刺激序列中,当两个关键刺激R1和R2的相同部件在不同位置时对重复知盲效应的影响。实验1结果表明,不同条件的重复知盲效应存在显著差异,但其中两个关键字中相同部件的位置相同时与部件位置不同时之间的重复知盲效应无显著差异,这表明部件位置对重复知盲现象无显著影响。实验2探究当关键刺激R1和R2为部件包含关系时的重复知盲效应。实验2结果表明,当一个关键刺激为独体字,且是另一个关键刺激的部件时存在重复知盲效应,其效应的大小会受到具有包含关系的两个关键字（合体字和独体字）在刺激序列中出现顺序的影响,当第二个关键刺激为独体字时的重复知盲效应要显著强于第二个关键刺激为合体字条件。研究结论是不同的汉字部件特点会影响重复之盲效应,这表明重复知盲现象很可能发生在在线的知觉加工过程。     

员工建言行为的人口统计特征元分析

研究目的在于明确人口统计学特征与员工建言行为的关系。共81篇实证文献被纳入元分析, 被试人数为39118人。结果发现, 员工年龄、教育程度、组织任期和职位均与建言行为显著正相关, 即年龄越大、受教育程度越高、组织任期越长的员工会表现出越多建言行为; 同时, 在不同的文化背景下, 职位高低与建言行为的关系存在显著差异, 受中国传统文化影响, 高、低职位员工的建言行为数量差异明显, 而在非中国情境下, 员工职位高低对其建言行为的数量影响差异不明显; 此外, 建言行为的数据来源对员工年龄与建言行为之间的关系存在显著调节作用, 采用他评方式时, 年龄与建言行为的正向关系更为显著。研究结果为人口统计特征预测建言行为提供较为精确的估计, 并为未来建言行为的相关研究指引了方向。