A Survey of the Social Development of the 10th, 11th,and 12th Grade Pupils in a Small High School

A potential weakness of quantitative methods is the intrusive nature of testing in general, and pretesting specifically. The Solomon four-group design ameliorates this difficulty, but because of statistical issues there are few published examples. W. Braver and Braver (1988) suggested the use of meta-analytic Stouffer's Z to combine the data from all four groups. Sawilowsky and Markman (1990a, 1990b, 1990c, 1990d) and Braver and W. Braver (1990a, 1990b) exchanged differing opinions on this approach. The present study is a Monte Carlo demonstration that the experiment-wise error rate inflates nearly triple nominal alpha. However, when not conducted as conditional tests, traditional procedures are more powerful than this meta-analytic approach, despite the ability of Stouffer's Z to combine all available data into a single statistic.     

Model Misspecification and Invariance Testing Using Confirmatory Factor Analytic Procedures

Confirmatory factor analytic procedures are routinely implemented to provide evidence of measurement invariance. Current lines of research focus on the accuracy of common analytic steps used in confirmatory factor analysis for invariance testing. However, the few studies that have examined this procedure have done so with perfectly or near perfectly fitting models. In the present study, the authors examined procedures for detecting simulated test structure differences across groups under model misspecification conditions. In particular, they manipulated sample size, number of factors, number of indicators per factor, percentage of a lack of invariance, and model misspecification. Model misspecification was introduced at the factor loading level. They evaluated three criteria for detection of invariance, including the chi-square difference test, the difference in comparative fit index values, and the combination of the two. Results indicate that misspecification was associated with elevated Type I error rates in measurement invariance testing.     

领导与下属的调节焦点对下属工作绩效的影响作用

调节焦点理论认为个体具有两种不同的调节焦点：促进性调节焦点和防御性调节焦点。探讨领导与下属的调节焦点对下属的任务绩效和情境绩效的影响作用,采用领导与下属配对样本进行调研,样本包括249对领导和下属。研究结果表明：（1）下属的促进性调节焦点对其情境绩效中的人际促进和工作奉献两个维度均具有显著影响作用,下属的防御性调节焦点对其任务绩效具有显著影响作用;（2）领导者的促进性调节焦点对下属情境绩效中的人际促进维度具有显著影响作用,领导者的防御性调节焦点对下属任务绩效具有显著影响作用;（3）领导者与下属之间在促进性调节焦点上的匹配通过领导-下属交换的中介作用影响下属的情境绩效。     

Employee information processing behaviors before and after a corporate downsizing

The World Wide Web possesses unique characteristics that distinguish it in important ways from traditional commercial communications environments. Because the Web presents a fundamentally different environment for marketing activities than traditional media, conventional marketing activities are becoming transformed, as they are often difficult to implement in their present form. In this article, we discuss the idea that these changes portend an evolution in the ''marketing concept'' and argue that in order for marketing efforts to be successful in this new medium, a new business paradigm is required. In this new approach, the marketing function must be reconstructed to facilitate electronic commerce in the emerging electronic society underlying the Web.     

Investigating use continuance of data mining tools

While improving decisional quality is important to businesses, continued use of DMTs is a critical issue for managerial personnel. This problem mainly concerns the willingness of an individual to participate in the behavior. It can be further defined in a routine-based working behavior. This problem essentially involves three key issues, task fit, technology use, and habit. This study therefore integrates task-technology fit (TTF) model, expectation–confirmation mode (ECM), and habit, to examine the determinants of continued use of DMTs. Prior studies have focused on intention to use DMTs in the first time and only considered part of the three issues for identifying the determinants. 285 respondents from managerial personnel were collected to empirically evaluate this research model. The three issues are all important in influencing continuance use intention of DMTs. In particular, the task-technology fit indicates a direct effect on two factors of the technology use issue, user satisfaction and perceived usefulness, and an indirect effect on continuance use intention. User satisfaction and perceived usefulness, and habit are the key predictors of continuance use intention.     

A Hands‐on Activity for Teaching the Poisson Distribution Using the Stock Market

The number of increases a particular stock makes over a fixed period follows a Poisson distribution. This article discusses using this easily‐found data as an opportunity to let students become involved in the data collection and analysis process.     

四川省知识分子群体参与全民健身及有关情况的调查与分析

】笔者就四川省知识分子群体参与全民健身的有关情况的调查进行了统计分析,其中主要包括对全民健身活动的知识、体育与健康观念、锻炼情况及要求、体育消费态度及消费倾向等内容,通过分析在一定程度上了解和掌握四川省知识分子群体对全民健身的认知、行为、态度、需要和倾向等方面的情况,从而向当地体育决策部门提供有关数据和参考材料     

基于用户使用角度电子商务研究（Ⅱ）——整合TAM与TTF概念模型分析

本文首先介绍两个典型的模型：用户接受模型（TAM）和任务技术适配模型（TTF）,分析整合两者的必要性。接着提出一个整合TAM和TTF的概念模型,并对模型假设和主要变量分析。最后,总结概念模型的主要创新点。     

基于用户使用角度电子商务研究（Ⅰ）——TAM与TTF模型应用述评

对电子商务网站的运营来讲,获得更多用户的接受是一个成功因素。本文将电子商务活动视作一个由多方因素驱动用户采纳的过程,应用两个典型的模型研究电子商务使用情况：用户接受模型（TAM）和任务技术适配模型（TTF）。首先,给出两个模型在电子商务中的应用现状,接着探讨两个模型整合的优点及进展,最后对研究现状进行述评,得出结论。     

舞龙运动的生理特征初探

运用运动人体科学的理论与方法 ,对全国 2 88名舞龙运动员的运动 HR、HRAT、RPE、5次肺活量和12 min跑等指标进行分析 ,旨在客观评价舞龙运动的负荷强度、疲劳程度、健身功效与舞龙运动员的心肺功能 ,为科学地推广和指导舞龙运动和研究我国的传统体育提供生物学依据。结果表明 :舞龙一项大负荷强度的有氧运动项目 ,舞龙运动能有效地促进人体心肺功能及有氧工作能力的提高