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Full-Text Articles in Education
Investigating The Fit Of The Generalized Graded Unfolding Model (Ggum) When Calibrated To Irt Generated Data From Dominance And Ideal Point Models, Abdulla Alzarouni
Investigating The Fit Of The Generalized Graded Unfolding Model (Ggum) When Calibrated To Irt Generated Data From Dominance And Ideal Point Models, Abdulla Alzarouni
College of Education and Human Sciences: Dissertations, Theses, and Student Research
The assessment of model fit in latent trait modelling, better known as item response theory (IRT), is an integral part of model testing if one is to make valid inferences about the estimated parameters and their properties based on the selected IRT model. Though important, the assessment of model fit has been less utilized in IRT research than it should. For example, there have been less research investigating fit for polytomous dominance models such the Graded Response Model (GRM), and to a lesser extent ideal point models such as the Generalized Graded Unfolding Models (GGUM), both in its dichotomous and …
Estimating School-Level Achievement In Belize, Betty Jean Usher-Tate
Estimating School-Level Achievement In Belize, Betty Jean Usher-Tate
College of Education and Human Sciences: Dissertations, Theses, and Student Research
This dissertation consists of five chapters: introduction, literature review, methodology, results, and discussion with final thoughts. The research design of this dissertation study attended to structures, cultures, and characteristics associated with, and specific to, the Belize education system. The processes for data collection and types of analyses were appropriate, yielded meaningful results, and served as a segue for national application. The Belize Educator Survey was developed to capture the educators’ voices and illuminate their relationship to educational achievement in Belize. The Belize Educator Survey was piloted and revised with direct input from educators and experts who work in the Belize …
Comparability Of Online And Paper/Pencil Mathematics Performance Measures, John L. Moon
Comparability Of Online And Paper/Pencil Mathematics Performance Measures, John L. Moon
College of Education and Human Sciences: Dissertations, Theses, and Student Research
The purpose of this study was to investigate the relationship between student mathematics performance of 4th, 8th, and 11th grade students in Nebraska and the mode of test administration, online and paper-pencil. Schools were allowed to select the mode of test administration for their school with some exceptions for students needing accommodations. This resulted in four test groups, namely students taking the online tests in schools selecting paper or online assessments along with students taking the paper-pencil tests in schools selecting paper or online assessments. Since the students in the study were clustered within schools, …
Improving Irt Parameter Estimates With Small Sample Sizes: Evaluating The Efficacy Of A New Data Augmentation Technique, Brett P. Foley
Improving Irt Parameter Estimates With Small Sample Sizes: Evaluating The Efficacy Of A New Data Augmentation Technique, Brett P. Foley
College of Education and Human Sciences: Dissertations, Theses, and Student Research
The 3PL model is a flexible and widely used tool in assessment. However, it suffers from limitations due to its need for large sample sizes. This study introduces and evaluates the efficacy of a new sample size augmentation technique called Duplicate, Erase, and Replace (DupER) Augmentation through a simulation study. Data are augmented using several variations of DupER Augmentation (based on different imputation methodologies, deletion rates, and duplication rates), analyzed in BILOG-MG 3, and results are compared to those obtained from analyzing the raw data. Additional manipulated variables include test length and sample size. Estimates are compared using seven different …