There is a substantial literature on attempts to obtain information on the proficiency of respondents from distractors in multiple choice items. Information in a distractor implies that a person who chooses that distractor has greater proficiency than if the person chose another distractor with no information. A further implication is that the…

This study presents a systematic investigation concerning the performance of different rating scales used in the English section of a university entrance examination to assess 1,287 Japanese test takers' ability to write a third-person introduction speech. Although the rating scales did not conform to all of the expectations of the Rasch model,…

There are at least two procedures to assess item difficulty stability in the Rasch model: robust z procedure and "0.3 Logit Difference" procedure. The robust z procedure is a variation of the z statistic that reduces dependency on outliers. The "0.3 Logit Difference" procedure is based on experiences in Rasch linking for tests developed by…

In this paper, we describe a new method we have developed for setting cut scores between levels of a test. We outline the wide variety of potential methods that have been used for such a process, and emphasize the need for a coherent conceptual framework under which the variety of methods could be understood. We then describe our particular…

Developed a method for conditional pairwise estimation in the Rasch model for ordered response categories using principal components analysis and evaluated the procedure through a simulation study. Results show that the quality of the estimates is excellent. (SLD)

Proposes formulas for expected true-score measures and reliability of binary items as a function of their Rasch difficulty when the trait (ability) distribution is normal or logistic. Provides an illustrative example for using the proposed formulas. (SLD)

Examined the sensitivity to change over time of the Amytrophic Lateral Sclerosis Assessment Questionnaire (ALSAQ-40; C. Jenkinson and others, 1999). Findings for 764 individuals show that the ALSAQ-40 is a valid and responsive disease-specific health-related quality of life instrument for studies of patients with motor neuron diseases. (SLD)

Attempted to illuminate practical limitations on the Rasch model by focusing on the recovery of the density scale through five simulation trials. Results show that when error distributions are insufficient, the results may be ordinal at best, and when error distributions are nonsymmetrical, the positions of items may be biased with respect to the…

Discusses substantive scale construction and the need for Rasch measurement practitioners to give careful consideration to designing variables based on theory, item construction, and models for the analysis of data. (SLD)

Compared the observation of children's growth in reading using grade equivalents with that using the Rasch simultaneous vertical equating procedure. Results from equating 25 reading tests show that grade equivalents differ more between two different test forms than do ability measures obtained from the Rasch simultaneous vertical equating. (SLD)

Compared the performance of four polytomous item response theory (IRT) and three linear models for constructing adjusted grade-point-average (GPA) measures. Studies involving cohorts of 1,255 and 1,796 college students and an additional 1,823 and 1,879 college students. Discusses implications of findings for correlation of grade-based measures and…

Studied the usefulness of the Multidimensional Random Coefficient Multinomial Logit model using a collection of embedded assessments administered to 541 students in middle school science classes. Findings illustrate the usefulness and good fit of the multidimensional approach in contrast to a unidimensional approach. (SLD)

Using the Rasch model for ordered categories, this paper provides a method for qualitative interpretations of data from an affective measure such as an attitude scale. This maximum information approach provides explicit qualitative information about the meaning of a score on the latent trait being assessed. (SLD)

Used a suite of Rasch measurement techniques to meet competing demands in establishing statewide benchmarks relating to the School Opinion Survey carried out over 1,200 government schools in 1 Australian state. Solutions to a variety of measurement and reporting problems were all found within the Rasch family of models. (SLD)

Developed an empirical strategy for transforming ordinal counts and percentages to interval scale measures by recoding them as ordered categories and estimating Rasch model scale parameters. Demonstrated the strategy for a neighborhood construct defined by 8 characteristics of 77 Chicago, Illinois, neighborhoods. (SLD)