Reliability as a function of the number of item options derived from the “knowledge or random guessing” model

For (0, 1) scored multiple-choice tests, a formula giving test reliability as a function of the number of item options is derived, assuming the knowledge or random guessing model, the parallelism of the new and old tests (apart from the guessing probability), and the assumptions of classical test theory. It is shown that the formula is a more general case of an equation by Lord, and reduces to Lord's equation if the items are effectively parallel. Further, the formula is shown to be closely related to another formula derived from Lord's randomly parallel tests model.     

不同类型考试焦虑影响考试成绩的差异模式

调查了440名高中生,以不同类型考试焦虑为预测变量,以掌握目标、情绪性、应对反应、考试自我效能感、成绩-接近目标、成绩-回避目标、担忧、学习和考试技能、认知干扰为中介变量,期末数学考试成绩为最终结果变量,探讨不同类型考试焦虑影响考试成绩的模式。结果表明:不同类型考试焦虑具有不同的影响考试成绩的模式,即存在认知主导型模式(简称C模式)、生理唤醒主导型模式(简称P模式)、技能缺乏主导型模式(S模式)等三种不同的模式。担忧是C模式中的主要中介变量,P模式的主要特征是担忧对情绪性存在显著影响,S模式的特点是中介变量较少,学习和考试技能变量受考试焦虑和考试自我效能感双重影响并作用于考试成绩。     

物理概念图试题的评分方法

详细介绍了运用知识编码对物理概念图试题进行评分的具体方法,并对物理概念图试题的难度、区分度、信度和效度进行了检验,计算了物理概念图试题与传统物理题型共同组成的期末物理测验的信度,说明依据知识编码评定物理概念图试题分数,是一种行之有效的评分方法,按照知识编码评定物理概念图试题的分数使物理概念图试题成为一道高质量的试题。     

智力测验分数解释的发展趋势

智力测验分数的解释是智力心理学一个重要的研究领域。智力测验分数解释最基本的一个目的就是为了理解。随着智力理论和智力测验的发展,智力测验分数的解释出现了一些新的特点与趋势即注重智力测验分数解释的理论基础,注重智力测验分数解释的效度丰富化与从有用信息的抽取来解释测验分数的趋向。     

Reconstructing Distances among Objects from Their Discriminability

We describe a principled way of imposing a metric representing dissimilarities on any discrete set of stimuli (symbols, handwritings, consumer products, X-ray films, etc.), given the probabilities with which they are discriminated from each other by a perceiving system, such as an organism, person, group of experts, neuronal structure, technical device, or even an abstract computational algorithm. In this procedure one does not have to assume that discrimination probabilities are monotonically related to distances, or that the distances belong to a predefined class of metrics, such as Minkowski. Discrimination probabilities do not have to be symmetric, the probability of discriminating an object from itself need not be a constant, and discrimination probabilities are allowed to be 0’s and 1’s. The only requirement that has to be satisfied is Regular Minimality, a principle we consider the defining property of discrimination: for ordered stimulus pairs (a,b), b is least frequently discriminated from a if and only if a is least frequently discriminated from b. Regular Minimality generalizes one of the weak consequences of the assumption that discrimination probabilities are monotonically related to distances: the probability of discriminating a from a should be less than that of discriminating a from any other object. This special form of Regular Minimality also underlies such traditional analyses of discrimination probabilities as Multidimensional Scaling and Cluster Analysis. This research was supported by the NSF grant SES 0318010 (E.D.), Humboldt Research Award (E.D.), Humboldt Foundation grant DEU/1038348 (H.C. & E.D.), and DFG grant Co 94/5 (H.C.).     

A psychometric assessment of a Swedish translation of Shafer's personality scale

The psychometric properties of a Swedish translation of Shafer's (1999a) Big Five Marker (BFM) scale were assessed. The assessment was based on self-ratings on the BFM scale obtained from 694 subjects (82% women and 18% men) residing in Sweden. The following main results were obtained: (a) The factor structure was clear and simple. (b) The factor reliabilities were satisfactory. (c) The heterotrait-heteromethod coefficients indicated construct validity for the scale. (d) The BFM scale showed similar psychometric properties for the older, employed, Swedish sample of the present study to those obtained for the younger, psychology undergraduate, USA sample in Shafer's study (1999a). The conclusion is that the BFM scale has satisfactory and stable psychometric properties and that due to its brevity and documented psychometric evaluation will facilitate research within the Big-Five factor domain, not least in Sweden.     

A Swedish non-word repetition test for preschool children

A Swedish non-word repetition test for preschool children was constructed with the aim of measuring short-term phonological memory, which has been shown to correlate with language development and language proficiency. Normative data based on results for 200 children four to six years of age are presented. An item analysis of the original 30-item test resulted in a shortened 24 non-word version found suitable for four- to six-year old children. Results for this shortened version, which had a Cronbach's alpha of 0.73, showed longer non-words to be more difficult to repeat than shorter ones, and significant effects of age and compatibility of the tester's and the child's accent, but not of gender. The results are discussed within the framework of Baddeley's working memory model.     

The Developmental Leadership Questionnaire (DLQ): some psychometric properties

The development leadership model (Larsson et al., 2003), designed to introduce refinements to the transformational leadership model, has been adopted for use in the Swedish Armed Forces. The Developmental Leadership Questionnaire (DLQ) was constructed to measure important parts of the model. The main aim of the study was to evaluate some psychometric properties of the DLQ. Most analyses are based on two subsets of individuals from a sample mostly consisting of male Swedish, military officers, each of whom has rated a given leader (n = 450 and 449 respectively). A second sample consisted of Swedish military cadets (n = 141). The dimensionality was assessed with a confirmatory factor analysis. Most DLQ scales were reasonably well reproduced and showed high or acceptable internal consistency. When related to perceived results of leadership (self-rated by leaders and rated by subordinates), results from multiple regression analyses supported what could be predicted by the theoretical model. It was concluded that the DLQ has acceptable psychometric properties and that the theoretical refinements introduced to the developmental leadership model were empirically supported.     

The Early Numeracy Test in Finnish: children's norms

This article concerns psychometric aspects of the Finnish Early Numeracy Test, which has been translated from the original Dutch Early Numeracy Test. The advantage of the test is that young children's numerical skills can be assessed systematically, which was not possible previously in Finland. A norm study was conducted in which the test was administered to a representative sample of 1,029 Finnish children. The reliability and validity results justify the use of the test as an early-childhood screening test and in research on number sense. The indicative effects of gender, parental professional education, domicile and number of siblings are discussed.     

学习焦虑、学习态度和投入动机与学业成绩关系的研究——关于《心理统计学》学习经验的调查

本研究对122名本科生《心理统计学》课程的学习经验进行调查,其结果为:(1)在该课程的学习经验和考试成绩上男、女生差异显著,它表现在学习态度层面的有用性和成就态度,投入动机层面的自我投入上女生均优于男生;研究还发现,考分低则焦虑水平较高;(2)学习焦虑、学习态度、投入动机与考试成绩之间有显著相关,其中学习焦虑与成绩呈负相关,学习态度、投入动机与成绩呈正相关;(3)学习焦虑,学习态度和投入动机均影响学习成绩。学习成绩不仅受到学习焦虑和投入动机的直接影响,还受到学习态度等因素的间接影响。