Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Conditions for Rasch-Dichotomizability of the Unidimensional Polytomous Rasch Model
View through CrossRef
Jansen and Roskam (1986) discussed the compatibility of the unidimensional polytomous Rasch model with dichotomization of the response continuum. They derived a rather strict condition in which dichotomization of multicategory data that fit the unidimensional polytomous Rasch model, results in dichotomous data which fit the dichotomous Research model with effectively the same subject parameter. In this paper a more general dichotomization condition is derived for the polytomous Rasch model, which appears less restrictive, but upholds that the intrinsic logic of the unidimensional polytomous Rasch model defies dichotomization in general. The robustness of dichotomous analysis investigated in a simulation study. It shows a close relation with the two-parameters (Birnbaum) model. Theoretical and methodological implications are discussed.
Title: Conditions for Rasch-Dichotomizability of the Unidimensional Polytomous Rasch Model
Description:
Jansen and Roskam (1986) discussed the compatibility of the unidimensional polytomous Rasch model with dichotomization of the response continuum.
They derived a rather strict condition in which dichotomization of multicategory data that fit the unidimensional polytomous Rasch model, results in dichotomous data which fit the dichotomous Research model with effectively the same subject parameter.
In this paper a more general dichotomization condition is derived for the polytomous Rasch model, which appears less restrictive, but upholds that the intrinsic logic of the unidimensional polytomous Rasch model defies dichotomization in general.
The robustness of dichotomous analysis investigated in a simulation study.
It shows a close relation with the two-parameters (Birnbaum) model.
Theoretical and methodological implications are discussed.
Related Results
Dimensionality and predictive validity of the HAM-Nat, a test of natural sciences for medical school admission
Dimensionality and predictive validity of the HAM-Nat, a test of natural sciences for medical school admission
AbstractBackgroundKnowledge in natural sciences generally predicts study performance in the first two years of the medical curriculum. In order to reduce delay and dropout in the p...
Rasch analysis of the Fatigue Severity Scale in multiple sclerosis
Rasch analysis of the Fatigue Severity Scale in multiple sclerosis
Background The 9-item, Fatigue Severity Scale (FSS-9) has been widely used as an outcome measure in multiple sclerosis (MS). Modern psychometric theory, in the form of the Rasch m...
Assessing Literacy Competencies Among Polytechnic Lecturers in Malaysia Using a Rasch-Based Measurement Model
Assessing Literacy Competencies Among Polytechnic Lecturers in Malaysia Using a Rasch-Based Measurement Model
Assessment literacy is a critical component of effective teaching and learning within Outcome-Based Education (OBE) systems, particularly in polytechnic institutions where competen...
The assessment of procedural skills in physiotherapy education: a measurement study using the Rasch model
The assessment of procedural skills in physiotherapy education: a measurement study using the Rasch model
Abstract
Background
Procedural skills are a key element in the training of future physiotherapists. Procedural skills relate to the acquisition of appropriate motor skills, which a...
The Rasch wars: The emergence of Rasch measurement in language testing
The Rasch wars: The emergence of Rasch measurement in language testing
This paper examines the uptake of Rasch measurement in language testing through a consideration of research published in language testing research journals in the period 1984 to 20...
Rasch Model
Rasch Model
AbstractThe Rasch model is a measurement model providing linear measures derived from an observed sum score across items forming a unidimensional scale. The data analysis allows fo...
Development and validation of assessment instrument for the perception and attitude toward tuberculosis among the general population in Indonesia: a Rasch analysis of psychometric properties
Development and validation of assessment instrument for the perception and attitude toward tuberculosis among the general population in Indonesia: a Rasch analysis of psychometric properties
IntroductionTuberculosis (TB)-related knowledge is an important evaluation metric for health education interventions. Factor analysis is limited when used on ordinal scales and doe...
Establishment and Application of the Multi-Peak Forecasting Model
Establishment and Application of the Multi-Peak Forecasting Model
Abstract
After the development of the oil field, it is an important task to predict the production and the recoverable reserve opportunely by the production data....