The construction and initial validation of a measure of expatriate job performance

Based on Campbell's (1990, Handbook of Industrial and Organizational Psychology, 2nd ed., Palo Alto, CA: Consulting Psychologists Press, 687–732) multi-factorial model of job performance, the Expatriate Performance Scales were developed to measure components of expatriate performance. Item generation for the scales was informed by job performance theory, content analysis of interviews with expatriates and item sorting by subject matter experts. The scales (48 items) were administered to 106 Australian expatriates in the Special Administrative Regions of China. Data were subjected to exploratory factor analysis, reliability analysis as well as tests for criterion, convergent and discriminant validity. These procedures resulted in 32 items measuring an amended model of expatriate performance with six components: task performance, communication performance, demonstrating effort, maintaining personal discipline, team and leadership performance and management and administration performance. Results provide initial psychometric evidence of criterion, convergent and discriminant validity.     

Augmenting the use of the Rasch model under time constraints

This paper proposes a method for estimating national standardizations of partially speeded tests composed of items from a previously standardized item bank. The model combines two submodels, one for whether the examinee reaches the item, and the second for whether she is successful if she does reach it. The former model is comparable to that for survival analysis using item position in test as a quasi-time parameter (Hutchison 1988). The latter is a straightforward Rasch Model. Combining the two submodels allows for the possibility that ability and drop-out were correlated. The model proposed here is superior that of Bolt et al. (2002), which divides the population into a speeded and a non-speeded group, in that it allows for a range of speededness effects. The model is tested using three UK national standardizations on one outcome and comparing the actual and predicted distributions. It is suggested that the observed discrepancies may be due to differences in the samples drawn, and that in some circumstances the model may actually produce a better estimate than an actual standardization exercise.     

Humorous coping scales and their fit to a stress and coping framework

The focus of this study is on the fit between the item content of scales measuring humorous coping and basic concepts of stress and coping theory. To investigate this fit 81 items from seven currently available humorous coping scales have been subjected to a facet analysis, using the tool of a mapping sentence. Three facets derived from stress and coping theory were part of this mapping sentence: external demands, humorous responses and coping aims. Because of the claim that humorous coping may be related to physical health dimensions, special attention has been paid to two health-related coping aims: cognitive reappraisal and response-focused coping responses. Five raters categorized the facets and their respective categories. Some humorous coping scales showed an underrepresentation of “external demands” and “humorous responses” and only a few scales covered the “aims” facet adequately. Reliability and agreement parameters varied considerably among scales, both on facet level and on category level. The Waterloo University Humor Inventory (WUHI) was a positive exception to this pattern. Findings are discussed in the light of specific characteristics of the scales included. Possible improvements of humorous coping measurement in health-related research are proposed, as well as adaptations to the rating procedures.     

Using Mokken scale analysis to develop unidimensional scales

This paper describes Mokken scale analysis as a method for assessing the unidimensionality of a set of items. As a nonparametric stochastic version of Guttman scale analysis, the Mokken model provides a useful starting point in scale construction since it does not impose severe restrictions on the functional form of the item trace lines. It requires only that the item trace lines are monotonically increasing and that they do not cross. After describing the Mokken method, we illustrate it by analyzing six abortion items from the 1975–1984 NORC General Social Surveys. In contrast to earlier parametric analyses of these items (regular and probit factor analyses), we find that these items form a single dimension. We argue that the two-dimension solution of these earlier analyses is an artifact of the differences in the difficulty of the items.     

The use of positively and negatively phrased items and the fit of a factor solution

To avoid the response set phenomenon, in handbooks it is suggested to compose item batteries of both positively and negatively formulated items. However, while doing a factor analysis, researchers usually neglect the effect this may have on the fit of the factor solution. In that case, the fit between a plausibly interpretable factor solution and the observed correlations may prove to be very unsatisfactory. In our opinion, however when both positively and negatively formulated items are used, it seems unrealistic to base the factor analysis on the content of the items only; also the difference in phrasing may influence the intercorrelations of the items. In this paper we discuss some possible additional assumptions in consequence of this consideration and we examine to what extent the deriving analysis decisions may improve the fit.     

Bipolarity and/or duality of social survey measurement scales and the question-order effect

When measuring (complex) attitudes within a social survey, researchers often use balanced lists of positive and negative items. The purpose of the present research is to investigate: (a) whether a specific order of measurement scale items can lead to the bipolar (single-dimensional) concept (attitude) being recognised as a dual (bi-dimensional) concept and vice-versa; and (b) whether item order can affect the consistency (metric characteristics) of a measurement scale. An experiment on a group of social science students was conducted: students were randomly split into three subgroups and three different version of a questionnaire (with three differing item orders) were applied. A multi-group confirmatory factor analysis (‘CFA’) and a single group CFA for each item order separately were applied. The final conclusion of the experiment is that there is no general rule about how and when respondents form separate (dual) or unidimensional (continuous) representations of measured concepts. Item-order effects are possible, but they are not as important as one would expect. The results of the experiment also suggest that other factors should be taken into account: the content of the measured concept and the cognitive sophistication of the respondents.     

“ASP动态网页设计技术”项目教学法的研究与实践

项目教学法是师生通过共同实施一个完整的项目而进行的教学活动,整个教学过程中既体现教师的主导作用又发挥学生的主观能动性,充分展示现代高职教育"以实践动手能力为奉"的教学目的。本文对项目教学法与传统的教学法相比较,介绍了项目教学法,并结合实践教学,以项目为中心对ASP动态网页设计技术课程教学进行了详细的教学设计。以整体的项目为例,通过确定项目任务、项目实施方案和项目验收及综合评价过程,阐述项目教学法在ASP动态网页设计技术课程设计中的具体应用。     

Item response theory and the measurement of deprivation: evidence from Luxembourg data

Item response theory (IRT) has recently been proposed as a framework to measure deprivation. It allows a latent measure of deprivation to be derived from a set of dichotomous items indicating deprivation, and the determinants of deprivation to be analysed. We investigate further the use of IRT models in the field of deprivation measurement. First, the paper emphasises the importance of item selection and the Mokken Scale Procedure is applied to select the items to be included in the scale of deprivation. Second, we apply the one- and the two-parameter probit IRT models for dichotomous items to two different sets of items, in order to highlight different empirical results. Finally, we introduce a graphical tool, the Item Characteristic Curve (ICC), and analyse the determinants of deprivation in Luxembourg. The empirical illustration is based on the fourth wave of the “Liewen zu Lëtzebuerg” Luxembourg socioeconomic panel (PSELL-3).     

An empirically-derived multidimensional measure of expatriate success: reconciling the discord

This paper examines the discord surrounding how expatriate success, or effectiveness, is defined. We review the many ways that success has been conceptualized and then seek to reconcile these differences by presenting a multidimensional measure of success, based on data collected from 118 expatriate respondents worldwide. A series of factor analyses, along with reliability and item analyses yielded nine measurement scales which included cultural adjustment, work-related adjustment, career development, HQ-subsidiary coordination, assignment completion, professional/skill development, shaping and controlling the subsidiary, satisfaction and overall assignment effectiveness. The process by which these scales were developed is described in the paper and all items and scale reliabilities are presented.     

Identifying Optimal Items in Quality of Life Assessment

Quality of life has drawn increasing attention in health science and more efforts have been devoted to develop instruments that are valid and reliable to assess quality of life. The World Health Organization (WHO) has devised an instrument World Health Organization Quality of Life Survey- Abbreviated Version (WHOQOL-BREF) to assess quality of life, but the psychometric property of each individual item has not been studied yet. Using item response theory, we examine the properties of the WHOQOL-BRIEF Taiwan version. Samejima’s graded response model was fitted, and item parameters were calculated. The items were ranked base on their discrimination power, and the best items are identified. Several data with subset of items (22, 20, 18, 16 and 14 items) were created by omitting items with lower discrimination power. The test information function of the full questionnaire and the subsets were compared. The results showed there were significant positive correlations between the full questionnaire and the subsets of items and the distributions are similar. The test information function showed the maximum amount of test information spaced over two ends of the theta continuum, and this suggested that the WHOQOL-BREF provided more information for groups with either lower or higher satisfaction of quality of life, while it is less discriminating for individuals in the middle range.     

河北省体育竞技优势和潜优势项目管理的思考

对优势和潜优势项目管理中应用价值工程进行了研究。结合河北省竞技体育优势、潜优势项目情况,介绍了价值工程工作的基本原理,对价值工程在优势和潜优势项目管理中的工作内容及程序进行了详细研究。根据VE理论,对优势与潜优势项目功能体系及其成本进行了分析,建立了优势和潜优势项目管理功能评价模型和价值评价方法,提出了价值工程活动组织体制与运行机制,文章最后提出结论和建议。     

How to examine construct validity of item banks

In this study data is brought to support an approach for assuring the content validity of item banks and for examining their construct validity. The method is an application of Guttman's concept of using mapping sentences for theory construction in the domain of “simple fraction’. The construct validity of the theory used for the creation of the item bank was tested by selecting two samples of items which are referenced in the same structuple (criterion). The Yule weak monotonicity coefficients of the items' connections were calculated and represented in two different matrices and in two different space diagrams. The results show clearly a similarity in both the structure of the space diagrams of any two parallel samples and in the partition of the points into regions, i.e., regions according to the classification of the items represented by them on the basis of the facets defined by the mapping sentences. Consequently, it may be concluded that the results support the construct validity of the theory on the basis of which the bank has been created.     

Item analysis of university-wide multiple choice objective examinations: the experience of a Nigerian private university

Teachers and Students worldwide often dance to the tune of tests and examinations. Assessments are powerful tools for catalyzing the achievement of educational goals, especially if done rightly. One of the tools for ‘doing it rightly’ is item analysis. The core objectives for this study, therefore, were: ascertaining the item difficulty and distractive indices of the university wide courses. A range of 112–1956 undergraduate students participated in this study. With the use of secondary data, the ex-post facto design was adopted for this project. In virtually all cases, majority of the items (ranging between 65% and 97% of the 70 items fielded in each course) did not meet psychometric standard in terms of difficulty and distractive indices and consequently needed to be moderated or deleted. Considering the importance of these courses, the need to apply item analyses when developing these tests was emphasized.     

清单计价模式下措施项目缺项引起的价款调整研究

本研究对措施项目缺项的价款调整问题进行了阐述,提出三大关键问题:影响措施项目缺项的因素分析、措施项目缺项的价款调整条件、措施项目缺项的价款调整分析。同时,本研究将导致措施项目缺项的原因进行责任与风险范围划分,对导致缺项的责任进一步分类后,给予相应的调整条件。通过对调整条件的分析,梳理出总价措施项目费与单价措施项目费的调整方法,对实际项目中措施项目费的价款调整提供了指导。     

Extracting cover sets from free fuzzy sorting data

Assignment of items to multiple categories requires suitable statistical methods. The present paper provides a new approach to solve this task. The concept of fuzzy sets is extended to cover sets (sets of overlapping clusters) in a simple manner introducing a vector of item membership sums. The application of the new concept is exemplified by modifying the fuzzy cluster analysis algorithm of Kaufman and Rousseeuw (Finding groups in data: an introduction to cluster analysis, 1990) to cover set cluster analysis appropriately. Wide equivalence of the numerical problems is demonstrated from Lagrange multipliers and Karush-Kuhn-Tucker conditions. Additionally, some extensions are introduced to the algorithm to improve its behavior for suboptimal large or small numbers of clusters. The adapted algorithm in most cases reproduces single sortings for correct numbers of clusters. Two applications to empirical free fuzzy sorting data sets are provided. Limitations of the algorithm are discussed.     

Competence maps for the information service industry

The primary aim of this paper is to construct competence maps for the information service industry. Starting with a review of the literature related to the information service industry and the competence in this industry, this study defined a pool of competence items and developed a questionnaire for field survey. Based on the data collected from the information service companies in Taiwan, a series of factor analyses with item filtration was carried out. This resulted in a six-factor solution including Cognition, Management I (organizing, leading, and controlling), Management II (planning), Technology Infrastructure, Application Systems, and Clerical Processing as the competence sets. Then the factor-based scales were created to represent the derived competence sets, the pairwise correlations between these scales were calculated, and the competence maps were constructed accordingly. The results obtained may be helpful to the internal (e.g., training/education, deployment, or substitution) and the external (e.g., recruitment) developments of human resource in information service companies.     

Mokken scale analysis for polychotomous items: theory,a computer program and an empirical application

This paper contains three subjects. First, an extension of Mokken's nonparametric item response models from dichotomous items to items with two or more ordered answer categories is proposed. Second, a computer program to analyze multicategory item scores is presented. This program is called MSP. The analyses by means of MSP are based on the multicategory extension of Mokken's theory. Finally, an application of MSP to empirical multicategory test data is presented in order to illuminate its possibilities.     

Exploring the effect of a middle response category on response style in attitude measurement

In this research we focus on the link between response style behaviour in answering rating data such as Likert scales and the number of response categories that is offered. In a split-ballot experiment two versions of a questionnaire were randomly administered. The questionnaires only differed in the number of response categories, i.e. 5 vs. 6 categories. In both samples a latent-class confirmatory factor analysis revealed an extreme response style factor. The 6-response categories version, however, revealed the more consistent set of effects. As far as the content latent-class factors, i.e. familistic values and ethnocentrism, are concerned, results were fairly similar. However, a somewhat deviant pattern regarding the familistic values items in the 6-response categories version suggested that this set of items is less homogeneous than the set of ethnocentric items. The effect of gender, age and education was also tested and revealed similarities as well as differences between the two samples.     

基于用户-产品-标签三元关系的个性化推荐系统研究

本文主要是在张子柯,周涛,张翼成[1]研究的"基于用户-产品-标签三分图的整合扩散的推荐算法"的基础上进行改进,在用户-产品扩散过程中,使用用户对产品的评分等级进行加权扩散,在产品-标签扩散过程中,使用简单的平均分配扩散,然后进行用户-产品-标签三分图上的简单整合,最终把得分最高的一些产品推荐给用户,提高了推荐的效率和准确性。     

A Comparison of χ2, RFA and IRT Based Procedures in the Detection of DIF

Bias research began at the end of the 1960s anddeveloped rapidly in the following decades for obvioussocial and political reasons, and due to the importantimpact that this issue has on the field ofpsychological and educational measurement. Since then,several methods have been proposed for the study anddetection of item bias or differential itemfunctioning (DIF). This paper presents a simulationstudy comparing the potential of some of these methodsfor detecting DIF: two IRT-based techniques (area measures), three ²-based procedures (MantelHaenszel, Logit Model and Logistic Regression) and theRestricted Factor Analysis method. The results showthat the technique that appears to do the best job isthe Mantel Haenszel statistic. Moreover, all detectiontechniques tend to overidentify DIF items, that is,some of the items labeled with DIF may in fact bewithout DIF. This tendency is slightly reversed in theLogistic Regression procedure.