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 15 of 15 for “"model-data fit"”.
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An application of item response theory to language testing: Model-data fit studies
… has recently attracted much attention, no model-data fit research has been conducted to explore the appropriateness of IRT modeling in language testing. The tenability of the strong assumption of unidimensionality has not been studied systematically, and little is known concerning the …
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New model-data fit indices for item response theory (IRT): an evaluation and application
DSpace SAF Submission Ingestion Package generated from Vireo submission #8327 on 2015-09-29 at 14:59:01
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Robustness redressed : an exploratory study on the relationships among overall assumption violation, model-data-fit, and invariance properties for item response theory models
… properties, studies the robustness of IRT models, and examines the difference in robustness when using model-data-fit as a robustness criterion. A conceptualization of robustness as a statistical relationship between model assumption violation and invariance properties has been created in …
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Sexual Harassment -Related Posttraumatic Stress Disorder: An Investigation of Symptom Structure and Criterion A
… structure of PTSD? The DSM-IV employs a 3-factor model with re-experiencing, avoidance, and hyperarousal symptom clusters, but recent research suggests that a 4-factor model provides better model-data fit. Second, what constitutes a potential trauma (Criterion A1)? Does it need to be a …
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Blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine : investigations using physical-biological model
… bloom patterns. In this thesis, a biological model of the A. fundyense life cycle developed from laboratory and field data is combined with a circulation model to test hypotheses concerning the factors governing A. fundyense blooms in the springs of 1993 and 1994. There is considerable …
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Blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine : investigations using physical-biological model
… bloom patterns. In this thesis, a biological model of the A. fundyense life cycle developed from laboratory and field data is combined with a circulation model to test hypotheses concerning the factors governing A. fundyense blooms in the springs of 1993 and 1994. There is considerable …
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Effects of respondent training on self-report personality assessment: an item response theory approach
… polytomous vs. dichotomous) on item performance, model-data fit, and criterion-related validity. Participants recruited from MTurk (n = 1977) were randomly assigned to 1 of the 4 groups differing in training (i.e. training vs. no training) and response scale (i.e. 4-point Likert scale vs. …
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A New IRT Approach to Test Construction and Scoring Designed to Reduce the Effects of Faking in Personality Assessment: The Generalized Graded Unfolding Model for Multi -Unidimensional Paired Comparison Responses
… a new multi-unidimensional item response theory model, called the GGUM-MU. Equations for the GGUM-MU item response and information functions are derived, a statistical method for examining model-data fit is illustrated, and the results of simulation studies to investigate the accuracy of a Bayes …
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Leader influence behavior from the target's perspective: a two-factor model
… a set of possible higher-order factor models and subjected them to competitive tests of model-data fit. The best fitting model was a two factor model of influence, consisting of: (a) a hard influence factor that includes legitimating, coalition, and pressure tactics, and (b) a soft …
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Bayesian Estimation of Multi-unidimensional Graded Response IRT Models
… test theory. Unidimensional graded response models (GRMs) are useful when polytomous response items are designed to measure a unified latent trait. They are limited in practical instances where the test structure is not readily available or items are not necessarily measuring the same …
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Maximizing Information: Applications of Ideal Point Modeling and Innovative Item Design to Personality Measurement
… offered as to how non-cognitive responses are modeled, the mode of delivery used when administrating such scales, and the impact of technology in measuring personality. Thus, the major purpose of the studies in this thesis concerns two interrelated issues of personality research, namely the way …
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Novel approach towards 1D resistivity inversion using the systematically-determined optimum number of layers
… inversion is important for constructing a model that represents the subsurface accurately. Current common methods to select the number of layers are performed in one of three ways: by trial-and-error and choosing the best model data-fit, by using the modified F-test, or through …
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Evaluation of the split-data strategy in factor analysis
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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A Quantitative Analysis of First Year Engineering Students' Courses Perceptions and Motivational Beliefs in Two Introductory Engineering Courses
… measured at the course level using the MUSIC model of Academic Motivation, and students' Expectancy-Value beliefs were measured within the engineering domain level using Expectancy-value theory. The dissertation is divided into three stages: In the first stage I provide a quantitative …
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Bridging the gap between research and practice: construction and validation of a CDA-informed English reading test for China's twelfth graders
… In the first stage, this study built a cognitive model, identified eight skills, and specified their hierarchical relationships. The cognitive model was built and iteratively refined by integrating information from a thorough literature review, students’ think-aloud protocols, and opinions from …