Using MFRM and SEM in the Validation of Analytic Rating Scales of an English Speaking Assessment

Abstract

More than half a century has passed since the Danish mathematician Georg Rasch (1901–1981) published his “Probabilistic Model for Intelligence and Attainment Tests” (Rasch 1960). With this departure, the model has found wide applications in measuring variables ranging from business, counseling, economics, education, health care, language testing, measurement, psychology, quality assurance, statistics to strategic planning field and has been extended from the initial application to the dichotomous data type to the polytomous ones. Today, the model is held as “Rasch Model” among measurement professionals and believed to have instigated the vision of promoting objective measurement and to have ..