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Ability Estimation Under Different Item Parameterization and Scoring Models

Si, Ching-Fung B. - 2002

A Monte Carlo simulation study investigated the effect of scoring format, item parameterization, threshold configuration, and prior ability distribution on the accuracy of ability estimation given various IRT models. Item response data on 30 items from 1,000 examinees was simulated using known...

Persistent link: https://www.econbiz.de/10009475047

Optimality, Sub-optimality, Nirvana, and Transaction Costs Foraging on the Commons

Feeny, David - 1995

choice of viewpoint from which to assess outcomes, time horizon, choice of normative system, measurement properties of the …

Persistent link: https://www.econbiz.de/10009468417

An evaluation of item difficulty and person ability estimation using the multilevel measurement model with short tests and small sample sizes

Beretvas, Susan Natasha (contributor) - 2011

Recently, researchers have reformulated Item Response Theory (IRT) models into multilevel models to evaluate clustered … correspond directly with IRT models’ parameters is often referred to as multilevel measurement modeling. Unlike conventional IRT … models, multilevel measurement models (MMM) can handle, the addition of predictor variables, appropriate modeling of …

Persistent link: https://www.econbiz.de/10009429290

Effects of sample size, ability distribution, and the length of Markov Chain Monte Carlo burn-in chains on the estimation of item and testlet parameters

Dodd, Barbara Glenzing (contributor) - 2011

Item Response Theory (IRT) models are the basis of modern educational measurement. In order to increase testing … IRT assumption of local independence. However, a set of measurement models, testlet response theory (TRT), has been … parameters, and indices of measurement effectiveness for final parameter estimates. …

Persistent link: https://www.econbiz.de/10009429369

The Strength of Multidimensional Item Response Theory in Exploring Construct Space that is Multidimensional and Correlated

Spencer, Steven Gerry 1965- - 2004

This dissertation compares the parameter estimates obtained from two item response theory (IRT) models: the 1-PL IRT …

Persistent link: https://www.econbiz.de/10009456838

Augmented testing and effects on item and proficiency estimates in different calibration designs

Wall, Nathan Lane - 2011

Broadening the term augmented testing to include a combination of multiple measures to assess examinee performance on a single construct, the issues of IRT item parameter and proficiency estimates were investigated. The intent of this dissertation is to determine if different IRT calibration...

Persistent link: https://www.econbiz.de/10009466042

An Assessment of The Nonparametric Approach for Evaluating The Fit of Item Response Models

Liang, Tie - 2010

As item response theory (IRT) has developed and is widely applied, investigating the fit of a parametric model becomes … an important part of the measurement process when implementing IRT. The usefulness and successes of IRT applications rely …

Persistent link: https://www.econbiz.de/10009467878

Evaluating IRT- and CTT-based Methods of Estimating Classification Consistency and Accuracy Indices from Single Administrations

Deng, Nina - 2011

Three decision consistency and accuracy (DC/DA) methods, the Livingston and Lewis (LL) method, LEE method, and the Hambleton and Han (HH) method, were evaluated. The purposes of the study were (1) to evaluate the accuracy and robustness of these methods, especially when their assumptions were...

Persistent link: https://www.econbiz.de/10009468231

CT3 as an Index of Knowledge Domain Structure: Distributions for Order Analysis and Information Hierarchies

Swartz Horn, Rebecca - 2002

The problem with which this study is concerned is articulating all possible CT3 and KR21 reliability measures for every case of a 5x5 binary matrix (32,996,500 possible matrices). The study has three purposes. The first purpose is to calculate CT3 for every matrix and compare the results to the...

Persistent link: https://www.econbiz.de/10009475051

High-dimensional maximum marginal likelihood item factor analysis by adaptive quadrature

Bock, R. Darrell.; Schilling, Stephen - 2005

Although the Bock–Aitkin likelihood-based estimation method for factor analysis of dichotomous item response data has important advantages over classical analysis of item tetrachoric correlations, a serious limitation of the method is its reliance on fixed-point Gauss-Hermite (G-H) quadrature...

Persistent link: https://www.econbiz.de/10009476619