Issues concerning the cost and feasibility of using Formulating Hypotheses (FH) test item types for the Graduate Record Examinations have slowed research into their use. This project focused on two major issues that need to be addressed in considering FH items for operational use: the costs of scoring and the assignment of scores along a range of…

Studies evaluating hypotheses about sources of differential item functioning (DIF) are classified into two categories: observational studies evaluating operational items and randomized DIF studies evaluating specially constructed items. For observational studies, advice is given for item classification, sample selection, the matching criterion,…

This study deals with the assessment of the unidimensionality of a set of items through the procedure developed by W. Stout and others (1991) and implemented in the computer program DIMTEST. This study examines a special feature of DIMTEST: the possibility for the user to assess the unidimensionality of a set of items by specifying a subset…

This study continued the research on analogy problem-solving on psychometric tests pursued by I. I. Bejar, R. Chaffin, and S. Embretson (1991). Characteristics of a semantic taxonomy and a cognitively and empirically motivated intensional/pragmatic (I/P) dichotomy were explored. There were two research questions: (1) Could the results of Bejar et…

A series of computer simulations was run to measure the relationship between testlet validity and the factors of item pool size and testlet length for both adaptive and linearly constructed testlets. Results confirmed the generality of earlier empirical findings of H. Wainer and others (1991) that making a testlet adaptive yields only marginal…

The stability of bias estimates from J. Schueneman's chi-square method, the transformed Delta method, Rasch's one-parameter residual analysis, and the Mantel-Haenszel procedure, were compared across small and large samples for a data set of 30,000 cases. Bias values for 30 samples were estimated for each method, and means and variances of item…

The structure and the levels of test anxiety among Israeli-Arab high school students were examined using the Arabic version of I. G. Sarason's (1984) Reactions to Tests scale. The questionnaire was administered before a math examination to 226 female and 195 male students. The results of confirmatory factor analyses using eight item parcels…

The French as a Second Language model tests for beginning levels 1, 2, and 3 were designed to evaluate students' language performance, as outlined in the program of studies for Alberta, Canada, in listening and reading comprehension and oral and written production, communication skills, culture, language and general language knowledge. The tests…

Traditionally, item difficulty has been defined in terms of the performance of examinees. For test development purposes, a more useful concept would be some kind of intrinsic item difficulty, defined in terms of the item's content, context, or characteristics and the task demands set by the item. In this investigation, the measurement literature…

The basic equations of item response theory provide a foundation for inferring examinees' abilities and items' operating characteristics from observed responses. In practice, though, examinees will usually not have provided a response to every available item--for reasons that may or may not have been intended by the test administrator, and that…

A framework for categorizing constructed-response items was developed in which items were ordered on a continuum from multiple-choice to presentation/performance according to the degree of constraint placed on the examinee's response. Two investigations were carried out to evaluate the validity of this framework. In the first investigation, 27…

Response accuracy and response speed provide separate measures of performance. Psychometricians have tended to focus on accuracy with the goal of characterizing examinees on the basis of their ability to respond correctly to items from a given content domain. With the advent of computerized testing, response times can now be recorded unobtrusively…

Type I error rates of the likelihood ratio test for the detection of differential item functioning (DIF) were investigated using Monte Carlo simulations. The graded response model with five ordered categories was used to generate data sets of a 30-item test for samples of 300 and 1,000 simulated examinees. All DIF comparisons were simulated by…

The degree to which item review on a computerized adaptive test (CAT) could be used by examinees to inflate their scores artificially was studied. G. G. Kingsbury (1996) described a strategy in which examinees could use the changes in item difficulty during a CAT to determine which items' answers are incorrect and should be changed during item…

When norm-referenced tests are developed for instructional purposes, to assess the effects of educational programs, or for educational research purposes, it can be very important to conduct item and test analyses. These analyses can evaluate the quality of items and of the test as a whole. Such analyses can also be employed to revise and improve…