Speaker
Description
Tests covering broad subject areas may consist of many items, resulting in long and tiring assessments. Nevertheless, computerized adaptive testing may not be a viable solution if the necessary hardware is unavailable or if fairness issues arise. The talk is framed within competence-based knowledge space theory, which enables the assessment of the latent set of attributes (such as skills or symptoms of a disorder) that characterize an individual based on their observed responses to test items. A procedure is presented that allows for the construction of shortened forms of a given test that are as informative about each individual’s attributes as the original test. The shortened forms may differ in the items selected from the original test, but are the same in terms of the assessment of individuals’ attributes. Additionally, the procedure allows for the construction of shortened forms that are minimal in the sense that no further items can be removed without reducing informativeness. A real-life application is presented in which a shortened form of a well-known fraction subtraction test is developed. This form consists of nine items appropriately selected from the original 20-item test. Analysis of the responses of 536 middle school students shows that the shortened form yields assessments that closely resemble those obtained with the original test and outperforms other short tests of the same length.
| If you're submitting a symposium talk, what's the symposium title? | New perspectives for developing short forms of tests |
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| If you're submitting a symposium, or a talk that is part of a symposium, is this a junior symposium? | No |
