Unrestricted versus restricted factor analysis of multidimensional test items: some aspects of the problem and some suggestions
نویسندگان
چکیده
When multidimensional tests are analyzed, the item structures that are obtained by Exploratory Factor Analysis are usually rejected when tested by Confirmatory Factor Analysis. This paper analyzes some of the aspects of the problem by means of simulation studies, and proposes a procedure that may be useful for dealing with the problem. The procedure is illustrated by means of an empirical example.
منابع مشابه
Positive-Shrinkage and Pretest Estimation in Multiple Regression: A Monte Carlo Study with Applications
Consider a problem of predicting a response variable using a set of covariates in a linear regression model. If it is a priori known or suspected that a subset of the covariates do not significantly contribute to the overall fit of the model, a restricted model that excludes these covariates, may be sufficient. If, on the other hand, the subset provides useful information, shrinkage meth...
متن کاملDeveloping a Critical Checklist for Textbook Evaluation
This study has been carried out to develop a critical checklist for global/commercial textbooks which play a crucial role in language teaching/learning. For this aim, a number of items have been developed based on a comprehensive review of the related literature and experts’ opinions. The tentative checklist was administered to the targeted population, yet 326 checklists were deemed appropriate...
متن کاملPsychometric properties of Geriatric Depression Scale (GDS) among elderlies in Tehran using multidimensional Rasch model
Introduction and purpose: The purpose of this study was to examine the psychometric properties of the Geriatric Depression Scale (GDS) when applied to the elderly of Tehran. This research is applied-developmental, descriptive and quantitative. Materials and Methods: The research population was Tehrani elderlies, among which 400 people responded to the Geriatric Depression Scale voluntarily and...
متن کاملObservation and Feedback of Content Specialists versus General English Teachers: Suggestions to Make Optimal English for Specific Purposes Courses
There is a growing interest among the higher education principals and policy makers to improve teacher evaluation methods and more important than that to use the evaluation data. A number of research studies implied the ineffective instruction of ESP courses in Iran (Atai, 2002; Eslami, 2005; Hayati, 2008; Ahmadi, 2008; Sherkatolabbasi & Mahdavi, 2012; Boniadi, Ghojazadeh & Rahmatvand, 2013). T...
متن کاملIranian EFL Teachers' Language Assessment Literacy (LAL) under an Assessing Lens
Despite being trained in pre-service teacher education programs, most EFL teachers are underprepared when faced with language assessment-related activities. Part of the problem emanates from the fact that Language Assessment Literacy (LAL) as a construct has not been well defined by experts. The purpose of this study was to pinpoint the components of LAL in the Iranian EFL context using an adap...
متن کامل