“非典（SARS）”应激反应模式及其特征

对中国17个省市1016人面对“非典”疫情的应激反应作了调查。“高发病率区”和“其它地区”的比较发现,在SARS应激反应结构方程模型中,二者有显著差异。而在情绪障碍结构方程模型中,二者无显著差异。所建立的SARS应激反应结构方程理论模型揭示,急性的应激反应中,恐慌是最重要的内容,其次是防御反应,对疫情的认知则起了一种重要的调节、抑制的作用。抑郁和焦虑作为一个人心理健康的指数,对急性的应激反应产生一定影响,而抑郁与焦虑对急性应激反应有更大影响。社会支持作为一种缓冲器与调节器,对SARS应激反应有值得注意的影响。研究揭示了高应激反应者的特征。高恐慌者有高抑郁、焦虑和低社会支持的显著特征;高防御者则有显著的高抑郁焦虑的特征,社会支持无差异;高认知者明显地有低抑郁、高社会支持的特征。     

社会支持与SARS应激反应的验证性研究

根据在SARS流行期间对中国17个省市1016人测验调查的资料。对社会支持与SARS应激反应的关系进行验证性研究。所建立的社会支持与SARS应激反应的模型A和模型B证实社会支持对SARS应激反应中的不同因素有不同的作用：社会支持程度高,恐慌程度小;而社会支持程度高,则防御反应更大。社会支持对SARS应激反应中认知和恐慌的作用是负向且微弱的;但是对心理障碍的影响及心理障碍对SARS应激反应的影响却是明显的,表明社会支持作为缓冲器与调节器,对SARS应激反应的直接影响不大,但径由心理障碍对SARS应激反应的影响却是明显的。结构方程分析表明,男女之闻存在诸多差异。女性社会支持对SARS应激反应中认知和恐慌的直接影响比男性更小。但社会支持径由心理障碍对SARS应激反应的影响更明显;女性社会支持对SARS防御反应的影响无论从直接途径还是径由心理障碍似乎都比男性要明显一些。男性的社会支持中,亲友支持的作用比女性更大。     

结构方程在心理学研究中的应用

近年来,在教育、社会及心理学等研究领域,结构方程模型(SEM,Structural Equation Modeling)已成为重要的多变量分析方法,并日益受到广大研究者的重视。本文旨在对SEM作简要概述,并讨论其在心理学研究中的应用,以及在应用过程中应该遵循的标准和需要注意的一些问题。     

Psychological and Somatic Factors in Patients Undergoing Coronary Artery Bypass Graft Surgery: Towards Building a Psychological Framework

The present study explored the relationships between psychological and somatic factors in patients undergoing Coronary Artery Bypass Graft surgery (CABG). The data-analysis of previous work was extended by adding somatic factors, including feelings of disability, somatic complaints and fatigue. The focus was on their relationships with psychological factors, including anxiety, depression and neuroticism. Prior to surgery and six months postoperatively, 217 patients completed self-report questionnaires. Using the method of structural equation modeling (SEM), the structure of relationships between the somatic, psychological and background factors (i.e., gender, age and medical factors) was explored. A model was developed providing a good fit and accounting for a substantial amount of variance. The structure of relationships revealed that somatic factors lead to anxiety and depression in the preoperative period, whereas anxiety and depression lead to somatic factors in the postoperative period. The structure further strengthened the key position of neuroticism and its overall negative prognostic implications.     

结构方程模式的发展与应用

结构方程模式(Structural Equation Modeling, SEM)在教育、心理研究中得到非常广泛的应用,但目前还有一些理论和技术上的问题有待于澄清。尤其在国内,许多研究者对这种统计方法不十分了解,因此导致了对该程序的误用以及对结果的错误解释。为此,文章首先对SEM的设计和估计方面的一些问题加以讨论;其次指出SEM在近期的一些发展以及在某些方面的最新应用;最后文章还对SEM的局限性进行了简要评述。     

Ant Colony Optimization and Local Weighted Structural Equation Modeling. A Tutorial on Novel Item and Person Sampling Procedures for Personality Research

Measurement in personality development faces many psychometric problems. First, theory‐based measurement models do not fit the empirical data in terms of traditional confirmatory factor analysis. Second, measurement invariance across age, which is necessary for a meaningful interpretation of age‐associated personality differences, is rarely accomplished. Finally, continuous moderator variables, such as age, are often artificially categorized. This categorization leads to bias when interpreting differences in personality across age. In this tutorial, we introduce methods to remedy these problems. We illustrate how Ant Colony Optimization can be used to sample indicators that meet prespecified demands such as model fit. Further, we use Local Structural Equation Modeling to resample and weight subjects to study differences in the measurement model across age as a continuous moderator variable. We also provide a detailed illustration for both tools with the Neuroticism scale of the openly available International Personality Item Pool – NEO inventory using data from the UK sample (N = 15 827). Combined, both tools can remedy persistent problems in research on personality and its development. In addition to a step‐by‐step illustration, we provide commented syntax for both tools. © 2019 European Association of Personality Psychology     

不同条件下拟合指数的表现及临界值的选择

在本模拟研究中设计了6种样本容量,6种因子载荷,和4种评分等级,并考察了正态和非正态分布两种情况。采用的错误模型为参数误置（真模型中每个因子各由5个题目来测量,错误模型中则是第一个因子由6个题测量,另两个因子各由4个和5个题来测量,即有一个因子载荷被误置）模型。结果发现（1）样本量、载荷量、评分等级数和分布形态都对GOF的取值确有影响。其中分布形态的影响最大。NNFI、IFI在不同条件下的平均值是最稳定的,其次是CFI、RMSEA和SRMR。它们都算是值得推荐的GOF,尤其是NNFI和IFI。（2）在正态分布中,当样本量≥1000时,根据NNFI、IFI、CFI、RMSEA、SRMR对模型是否拟合做出判断时有很低的两类错误率,在样本量<1000时则不理想。在偏态条件下无论选择哪个GOF两类错误率都很高。（3）采用2指数策略在很多情况下也不能显著降低两类错误率。（4）由于在数据分布非正态,或正态但样本量<1000时是难判断模型是否拟合的。因此我们提出了2界值策略。即为每个GOF确定上下两个界值。低于下界值时可判断模型是不正确的,而高于上界值时则可判断模型是正确的。GOF取值处于上下界值之间时难以判断模型是否拟合,只能说越高拟合的可能性越大。这时就要通过跨样本验证和增加样本量来确定模型是否正确     

创造性科学问题提出材料的编制及效度研究

本研究通过对收集的科学发明创造实例进行整理,测量,访谈,再测量,建立拥有多项指标的创造性科学问题提出材料库,以期为研究创造性科学问题提出提供有效的测试工具。在材料库的建立过程中,对问题提出中的原型启发效应进行了探讨,结果表明,原型对创造性问题提出具有稳定的启发效应,并且这种启发效应在具有理科背景的个体上有更明显的效果。此外,创造性科学问题提出分数不仅与创造性成就倾向显著相关,且在企业环境中也显示出了对于不同创造力群体的有效鉴别     

Analysis of drivers’ behavior under reduced visibility conditions using a Structural Equation Modeling approach

One way to improve safety under reduced visibility conditions (i.e., reduce the chances of visibility related crashes) is to improve drivers’ behavior under such adverse weather conditions. The aim of this paper is to thoroughly examine drivers’ responses under low visibility conditions and quantify the impacts and values of various factors found to be related to drivers’ compliance and drivers’ satisfaction with variable speed limit (VSL) and changeable message signs (CMS) instructions in different visibility, traffic conditions, and on two types of roadways; freeways and two-lane roads.The data used for the analyses were obtained from a self-reported questionnaire survey carried out among 566 drivers in Central Florida, USA. To achieve these goals, Explanatory Factor Analysis (EFA) and Structural Equation Modeling (SEM) approaches were adopted.The results revealed that drivers’ satisfaction with VSL/CMS was the most significant factor that positively affected drivers’ compliance with advice or warning messages displayed on VSL/CMS under different fog conditions followed by human factors. Moreover, it was found that roadway type affected drivers’ compliance to VSL instructions under medium and heavy fog conditions. Furthermore, drivers’ familiarity with VSL and human factors were the significant factors affecting drivers’ satisfaction with VSL/CMS advice under reduced visibility conditions. Based on the findings of the present study, several recommendations are suggested as guidelines to improve drivers’ behavior in such reduced visibility conditions by enhancing drivers’ compliance with VSL/CMS instructions.     

Too individualistic for safety culture? Non-traffic related work safety among heavy goods vehicle drivers

IntroductionThis article reports on a study of non-traffic related work safety among drivers of heavy goods vehicles in Denmark. In the heavy goods vehicle transport (HGV) sector only 6.4% of workplace accidents involving drivers are traffic related. HGV work is characterised by solitary work, as drivers tend to work at a physical distance from their own company and their working environment is also influenced by the working environment of other companies e.g. the places where they deliver goods. This study focuses on an analysis of HGV drivers’ and managers’ differentiated understandings of risk and safety and its management within an organisational context. The situational focus involves viewing HGV drivers’ working environment as a part of the organisational structure as well as of other social relationships. An understanding of safety culture as practice is applied with the view of identifying values and attitudes as well as organisational and technical aspects in relation to how individualist or collectivist understandings of risk and safety influence the working environment in HGVs.MethodThe study applied a mixed methods approach and in this article the qualitative interviews conducted with drivers and managers is the primary data source.ResultsThis study suggests a widespread understanding of drivers as being individually oriented in their work, from drivers and management alike. However, the study also demonstrates that, in conducting their work, the drivers are actually interdependent, and share knowledge frequently, albeit informally. The organisational structure of the company shapes their individual attitudes towards safety but they also report being dependent on relationships with, and information from, their fellow colleagues, former colleagues and friends who shape their understandings and attitudes towards hazards and safety practices. The analysis points to risk-taking and unsafe practices as prevalent among HGV drivers, who often refer to risk as trivial and the management of such risks as one’s own responsibility. Knowledge of how to manage risks in everyday practice is shown to be principally related to personal experiences but also to the good advice and examples of fellow drivers.ConclusionsThe analysis points to interdependent and collectivist practices among HGV drivers even though they are perceived as being individualistically oriented when it comes to safety. Therefore, non-traffic related safety practices, in this case the loading and unloading of vehicles, occur in the grey zone of organisational safety management. Despite the fact that organisational safety initiatives are initiated, the management sees limited possibilities for enforcing them and hence safety practice is often left to the individual driver.Practical applicationsA safety culture perspective might enhance work safety among HGV drivers if we are able to understand workplace culture in a pluralistic way. Collectivist practice among the drivers can be utilised in order to improve knowledge sharing and situational safety practices. The informal communication identified among the drivers might offer a new model for safety initiatives based on more collectivist, albeit informal, safety culture practices on behalf of HGV companies.