Results 91 to 100 of about 12,669,314 (268)

Assessing the Impact of Characteristics of the Test, Common-items, and Examinees on the Preservation of Equity Properties in Mixed-format Test Equating [PDF]

open access: yes, 2014
Preservation of equity properties was examined using four equating methods - IRT True Score, IRT Observed Score, Frequency Estimation, and Chained Equipercentile - in a mixed-format test under a common-item nonequivalent groups (CINEG) design.
Wolf, Raffaela
core  

Refining effect size measures and classification for differential item functioning: Toward unified guidelines across methods

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Differential Item Functioning (DIF) analysis is used to identify potentially biased items in multi‐item measurements. In addition to testing the statistical significance, it is essential to evaluate the practical significance of DIF through effect size measures.
Michaela Cichrová   +2 more
wiley   +1 more source

Assessing parameter invariance in item response theory’s logistic two item parameter model: A monte carlo investigation [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2010
Statistical properties of the ability level estimate (theta) in item response theory (IRT) were investigated through a Monte Carlo investigation, based on data generated with a four cases multifactor design.
Louis Laurencelle, Marlène Galdin
doaj  

lordif: An R Package for Detecting Differential Item Functioning Using Iterative Hybrid Ordinal Logistic Regression/Item Response Theory and Monte Carlo Simulations [PDF]

open access: yes
Logistic regression provides a flexible framework for detecting various types of differential item functioning (DIF). Previous efforts extended the framework by using item response theory (IRT) based trait scores, and by employing an iterative process ...
Seung W. Choi   +2 more
core  

Mixture multigroup structural equation modelling for ordinal data

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Social scientists often compare groups in terms of relations between latent variables (LV) (i.e. structural relations) using Structural Equation Modelling (SEM). LVs are measured indirectly by questionnaires; thus, measurement invariance must be evaluated before comparisons can be made. To efficiently compare many groups, the recently proposed
Andres F. Perez Alonso   +3 more
wiley   +1 more source

An item response theory analysis of the Dissociative Experiences Scale II: examining psychometric properties and longitudinal stability among Japanese adults

open access: yesBMC Psychiatry
Background The Dissociative Experiences Scale (DES-II) is widely used globally. However, psychometric properties of the scale have not been adequately examined.
Tatsuya Ikeda, Yuhei Urano
doaj   +1 more source

A Definition of a Heywood Case in Item Response Theory Based on Fisher Information

open access: yesEntropy
Heywood cases and other improper solutions occur frequently in latent variable models, e.g., factor analysis, item response theory, latent class analysis, multilevel models, or structural equation models, all of which are models with response variables ...
Jay Verkuilen, Peter J. Johnson
doaj   +1 more source

A MATLAB Package for Markov Chain Monte Carlo with a Multi-Unidimensional IRT Model [PDF]

open access: yes
Unidimensional item response theory (IRT) models are useful when each item is designed to measure some facet of a unified latent trait. In practical applications, items are not necessarily measuring the same underlying trait, and hence the more general ...
Yanyan Sheng
core  

Benchmarking by Item Response Theory (BIRTH): método de benchmarking utilizando a teoria da resposta ao item na construção de escalas de competitividade [PDF]

open access: yes, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Produção, Florianópolis, 2014.Este trabalho desenvolve um novo método de benchmarking, que permite a construção de escalas de ...
Pacheco, Juliano Anderson
core  

Home - About - Disclaimer - Privacy