A Simple and Effective Method to Test the Dimensionality Axiom of the Rasch Model

1 January 1982

journal article
other
Published by SAGE Publications in Applied Psychological Measurement

Vol. 6 (1) , 83-91
https://doi.org/10.1177/014662168200600109

Abstract

A simple method is introduced to test the dimensionality axiom in the Rasch model. The method consists of a suitable partitioning of the data set. This partitioning is based on the responses to some of the items being investigated. The items used for this purpose are called the external criterion items. data are presented indicating the effectiveness of the method in instances where the traditional test procedures fail.

Keywords

This publication has 3 references indexed in Scilit:

Testing and obtaining fit of data to the Rasch model
British Journal of Mathematical and Statistical Psychology, 1980
A Goodness of Fit Test for the Rasch Model
Psychometrika, 1973
A Procedure for Sample-Free Item Analysis
Educational and Psychological Measurement, 1969