Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 3955 for “"item"”.
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A Comparison of Item Parameters across Item Types
Seven item formats from a professional licensure examination program (n=4,706) were evaluated to determine whether there are significant differences in item parameter estimates based on item formats. The item formats were standard multiple choice, multiple choice with a graphic or exhibit attached, …
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Neural Correlates of Item and Item-Context Memory Encoding
… of episodic memories -- or memory for an item and its context -- have been studied using a functional neuroimaging procedure known as the 'subsequent memory procedure'. In this procedure, neural activity associated with later remembered versus later forgotten study items is contrasted and …
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Modeling item bias in fixed-item tests and computerized adaptive tests
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Differential Item Functioning on the International Personality Item Pool's Neuroticism Scale
… of the public-domain International Personality Item Pool (IPIP) scales has grown significantly over the past decade (Goldberg, Johnson, Eber, Hogan, Ashton, Cloninger, & Gough, 2006) research on the psychometric properties of the items and scales have become increasingly important. This research …
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Collection/item metadata relationships
… is often attached to both collections and items. Collection metadata and item metadata are related: one can infer facts about items from descriptions of collections, and facts about collections from descriptions of items. This sort of reasoning, which is important to finding, understanding, …
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Controlling item exposure for response time-informed item selection in computerized adaptive testing
… (MIC) by the expected response time for each item effectively reduced the average completion time for a test of fixed length while maintaining efficiency of ability estimation. However, this also resulted in an extremely skewed distribution of item exposure rates. To counter this issue, they …
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Groupings in item demand problems
… of distributions can be applied to problems in item demands. A justification of the Poisson distribution is given for such applications, but it is also pointed out that the Negative Binomial distribution might be applicable. It is also shown that such a probability model might have an …
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The Relationship of MMPI-A Item Effectiveness to Item Content, Diagnostic Category, and Classification Accuracy
… Handel, and Lynch (2001) recently compared the item endorsement frequencies for the MMPI-A normative sample against two adolescent clinical samples. Results showed that the MMPI-A contains a substantial number of items that do not show a significant difference in item endorsement frequency …
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On-The-Fly Parameter Estimation Based on Item Response Theory in Item-based Adaptive Learning Systems
… features a Bayesian algorithm that computes item and person parameters on the fly. The new algorithm is validated in two separate simulation studies and the results show that the system, while being cost-effective to build and easy to implement, can also achieve adequate adaptivity and …
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Methods of Detecting Differential Item Functioning: A Comparison of Item Response Theory and Confirmatory Factor Analysis
<p>Differential item functioning (DIF) occurs when an item performs statistically differently for a reference group than for a focal group. DIF is a threat to the validity of a test, and it can lead to illegal usage of a test in situations such as employee selection. Thus, DIF has important …
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Multilevel modeling of item position Effects
… assumed that the context or position in which an item is administered does not have a differential effect on examinee responses to the item, or at least that any differential effect is negligible. Violations of this assumption may bias item response theory estimates of item and person parameters. …
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Modelos multidimensionais de resposta ao item
… as propriedades dos modelos de resposta ao item em termos teóricos e de aplicabilidade a dados reais. Em particular: exploramos modelos de resposta ao item unidimensionais dicotómicos e politómicos; aplicamos modelos unidimensionais para grupos múltiplos; utilizamos procedimentos …
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Test taking motivation and item performance
… The effect of test taking motivation on item performance is tested. The study proposes that 1) the item performance difference between high and low motivation groups varies with item difficulty; and 2) aberrant response patterns can be associated with motivation. Statistical techniques …
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Item Order Effects on Attitude Measures
… was to examine the effects of altered item order on attitude measures for both computerized adaptive and conventional survey formats. Based on items modified from a dissertation/thesis completion survey (Green & Kluever, 1997) with three scales, three survey versions were generated with …
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Item parameter drift and online calibration
An important assumption of item response theory based computerized adaptive assessment is item parameter invariance. Sometimes, however, item parameters are not invariant across different test administrations due to factors other than sampling error; and this phenomenon is termed item parameter …
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Some issues in item response theory
… the assumption of local independence (LI) in item response theory (IRT) models in the first three chapters, and differential item functioning (DIF) in IRT in the last chapter. A new term ""conditional trivariance"" for three items is defined, which is a measurement of joint local dependence …
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Loglinear Models as Item Response Models
For analyzing item response data, item response theory (IRT) models treat the discrete responses to the items as driven by underlying continuous latent traits, and consider the form of conditional probability of the response to each item given the latent traits. In a similar fashion, log-linear …
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Assessing The Dimensionality of Polytomous Item Exams
<p> Unidimensionality is a main assumption for Item Response Theory (IRT) models that are applied to statewide standardized tests for purposes such as scoring, equating, scaling, and DIF analyses. Thus, it is important that the unidimensionality evaluation of tests be efficiently and effectively …
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