Analysis Of Data From The Australian Scholastic Aptitude Test And Public Examinations For The Western Australian Institute Of Technology In 1971

Author : Asrijanty Asril
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (813 download)

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Download or read book Evaluation of the Indonesian Scholastic Aptitude Test According to the Rasch Model and Its Paradigm written by Asrijanty Asril and published by . This book was released on 2011 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] This study evaluates a high stakes test, the Indonesian Scholastic Aptitude Test (ISAT) from the perspectives of the Rasch model and its paradigm. This test has been developed by the Center for Educational Assessment (CEA) in Jakarta and has been used as one of the admission tests for undergraduate and postgraduate levels of study in some public universities in Indonesia. The CEA has formed a bank of items which is used to construct different sets of items for different purposes. For this study the data from two different sets of items from the item bank, one administered to students for undergraduate entry, and one for postgraduate entry, were available for analysis. Each test consists of three subtests, called Verbal, Quantitative, and Reasoning, to reflect the capacities they are intended to assess. Firstly, this study examines the internal structure of the subtests by applying the Rasch model and its paradigm. Secondly, this study examines the stability of item bank parameters for the items of the subtests. Thirdly, the predictive validity of the test is examined. The Rasch model can be applied as primarily a statistical model used to model data. However, its use in this thesis goes beyond this narrow focus: rather the Rasch paradigm is used as a framework for the whole study. The case for the model is that the comparisons among persons are invariant with respect to which items are used from a class of relevant items, and that the comparisons among items are invariant with respect to the class of persons. These invariance properties are independent of any particular data set. They are especially important when not all persons can attempt the same items on every occasion, which occurs, for example, when item banks are used. However, data will have these invariant properties only if they fit the model. It follows that data are examined for fit to the model, and that if data do not fit the model, it is the data that need to be examined and a substantive explanation for the misfit sought. The purpose of the examination is a better understanding of the design of the instrument and the variable and context of measurement. It is this perspective that involves the broader Rasch paradigm, not merely the application of the model. In this paradigm validity, reliability and fit of the data to the model are integrated. are examined for fit to the model, and that if data do not fit the model, it is the data that need to be examined and a substantive explanation for the misfit sought. The purpose of the examination is a better understanding of the design of the instrument and the variable and context of measurement. It is this perspective that involves the broader Rasch paradigm, not merely the application of the model. In this paradigm validity, reliability and fit of the data to the model are integrated. In this study the test is examined not only according to the Rasch model but also according to the Rasch paradigm. Accordingly, the aspects that were examined in addition to the fit of data to the Rasch model were factors that may affect the validity of responses and inferences, including the accuracy of person and item estimates...